Wireless Components
Multistandard VIF-PLL
TDA 6930 Version 1.0
Specific ation August 1999
Edition 03.99
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Product Info
Produ ct Info
Wireless Components
Specification, August 1999
Package
TDA 6930
Product Info
General Description The TDA 6930 is an integrated circuit
for high class multistandard TV vision
IF signal, sound IF signal and
AM-Audio signal processing.
FM and NICAM sound IF carriers are
converted to their intercarrier
frequency.
All switching functions are controlled
via open collector transistors.
Outputs for threshold controlled tuner
AGC , digital tuning AFC , DF and
AM-AF for all terrestrial standards are
available.
Features â– FP LL ca rrie r regen erati on fro m
sound channel without nyquist slope
for best sound S/N and pulse
response
â– Choice of 2 VIF / SIF switchable
inputs
â– intercarrier operation possible
â– seperate AM-AF demodulator
channel without external
components
■VCO freque ncy switch able for L / L‘
â– digital tuning AFC
seperate adjustable for L‘
â– parallel output of DF/Nicam and
AM-AF
■L/L‘ peak white detector VIF-AGC
with average controlled response,
scrambling save for Canal +
â– adjustab le tune r AGC
â– Low operating voltage of 7.5 V
â– precision internal bandgap
reference
â– Fully ESD protected
Application â– Television sets â– VTR sets
Ordering Information
Type Ordering Code Package
TDA 6930X Q67007-A52 17 GEG P-DSO-28
TDA 6931X Q67007-A5229 GEG P-DSO-32
TDA 6930S Q67000-A5180 S-DIP-30
1Table of Contents
1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.4 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
3 Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2 Pin Definition and Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3 Internal circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.4 Functional Description (P-DSO-32) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.5 Block Diagram (P-DSO-32) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
4 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.1 Application Circuit P-DSO-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.2 Application Circuit P-DSO-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.1.3 Application Circuit S-DIP-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.2 Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.2.1 Typical input-filter concept 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.2.2 Typical input-filter concept 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.2.3 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
5 Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.2 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.1.3 AC/DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.2 Electrical Diagramms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.1 Typical VIF AGC voltage characteristic . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.2 Typical VIF intermodulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.3 Typical AM AF S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.2.4 Typical AM Audio THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.2.5 Typical DC-current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
5.2.6 Typical AF amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
2Product Description
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.4 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Contents of this Chapter
Product Description
2 - 2
TDA 6930
Wireless Components
Specification, August 1999
2.1 Overview
The TDA 6930 is an integrated circuit for high class multistandard TV vision IF
signal, sound IF signal and AM-Audio signal processing.
FM and NICAM sound IF carriers are converted to their intercarrier frequency.
All switching functions are controlled via open collector transistors.
Outputs for threshold controlled tuner AGC , digital tuning AFC , DF and AM-AF
for all terrestrial standards are available.
2.2 Features
â– FPLL carrier regeneration from sound channel without nyquist slope for best
sound S/N and pulse response
â– Choice of 2 VIF / SIF switchable inputs
â– intercarrier operation possible
â– seperate AM-AF demodulator channel without external components
■VCO frequency switchable for L / L‘
■digital tuning AFC seperate adjustable for L‘
â– parall el output of DF/N icam and AM-AF
■L/L‘ peak white detector VIF-AGC with average controlled response,
scrambling save for Canal +
â– adjustable tuner AGC
â– Low operating voltage of 7.5 V
â– precision internal bandgap reference
â– Fully ESD protected
2.3 Application
â– Television sets
â– VTR sets
Product Description
2 - 3
TDA 6930
Wireless Components
Specification, August 1999
2.4 Package Outlines
P-DSO-28:
P-DSO-32:
Product Description
2 - 4
TDA 6930
Wireless Components
Specification, August 1999
S-DIP-30:
3Functional Description
3.1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2 Pin Definition and Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3 Internal circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.4 Functional Description (P-DSO-32) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.5 Block Diagram (P-DSO-32) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Contents of this Chapter
Functional Description
3 - 2
TDA 6930
Wireless Components
Specification, August 1999
3.1 Pin Configuration
Pin_config_1.wmf
Figure 3-1 Pin Configuration P-DSO-28
Pin_config_2.wmf
Figure 3-2 Pin Configuration P-DSO-32
SIF1Y
SIF1X
AGCH
VIF1Y
VIF1X
AGCOUT
AGCREF
AGCM
VCC1
TRAPOUT
UREF
SSW1
SSW2
VCOX
SIF2X/VIF2X
SIF2Y/VIF2Y
GND
AMSIFX
AMSIFY
SIFAGC
AMAFOUT
FMDFOUT
AMSIFAGC
PDLOOP
AFCOUT
GND
VCC
VCOY
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
TDA 6930
SIF1Y
SIF1X
AGCH
VIF1Y
VIF1X
AGCOUT
AGCREF
AGCM
VCC1
TRAPOUT
UREF
SSW1
SSW2
VCOX
SIF2X/VIF2X
SIF2Y/VIF2Y
GND
AMSIFX
AMSIFY
SIFAGC
AMAFOUT
FMDFOUT
AMSIFAGC
PDLOOP
AFCOUT
GND
VCC
VCOY
1
2
3
4
5
6
7
8
9
10
11
12
13
14
32
31
30
29
28
27
26
25
24
23
22
21
20
19
TDA 6930
TP1X
TP1Y
TP2X
TP2Y
15
16
18
17
Functional Description
3 - 3
TDA 6930
Wireless Components
Specification, August 1999
Pin_config_3.wmf
Figure 3-3 Pin Configuration S-DIP-30
SIF1Y
SIF1X
AGCH
VIF1Y
VIF1X
AGCOUT
AGCREF
AGCM
VCC1
TRAPOUT
UREF
SSW1
SSW2
VCOX
SIF2X/VIF2X
SIF2Y/VIF2Y
GND
AMSIFX
AMSIFY
SIFAGC
AMAFOUT
FMDFOUT
AMSIFAGC
PDLOOP
AFCOUT
GND
VCC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
30
29
28
27
26
25
24
23
22
21
20
19
18
17
TDA 6930
VCOY 15 16
NC
Functional Description
3 - 4
TDA 6930
Wireless Components
Specification, August 1999
3.2 P in Defini tion and Function
Table 3-1 Pin Definition and Function
Symbol Pin Description
P-DSO-28 P-DSO-32 S-DIP-30
SIF2X/VIF2X 111 Sound IF2 / Carrier differential input signal
Video IF2 / Carrier differential input signal
SIF2Y/VIF2Y 222
GND 333 signal input ground
AMSIFX 444 AM Sound IF differential input signal
AMSIFY 555
SIFAGC 666FM Sound IF AGC capacitor
AMAFOUT 777 AM audio frequency output
FMDFOUT 888 FM / NICAM differential frequency output
AMSIFAGC 999AM Sound IF AGC capacitor
PDLOOP 10 10 10 PLL loop filter
AFCOUT 11 11 11 AFC output
GND 12 12 12 power supply ground
VCC 13 13 13 positi ve power supply voltage
VCOY 14 14 15 VCO reference circuit for 2*fpc
TP2X -15- Differential low pass capacitor in automatic phase
control circuit for video demodulator
TP2Y -16-
TP1Y -17- Differential low pass capacitor in automatic phase
control circuit for video demodulator
TP1X -18-
VCOX 15 19 16 VCO reference circuit for 2*fpc
SSW2 16 20 18 standard switch
SSW1 17 21 18
UREF 18 22 20 internal reference voltage capacitor
TRAPOUT 19 23 21 CVBS output signal
VCC1 20 24 22 analog small signal positive power supply voltage
AGCM 21 25 23 AGC average capacitor
AGCREF 22 26 24 tuner AGC takeover adjust
AGCOUT 23 27 25 tuner AGC output
VIF1X 24 28 26 Video IF1 / Carrier di fferential input signal
VIF1Y 25 29 27
AGCH 26 30 28 Video IF AGC capacitor
SIF1X 27 31 29 Sound I F1 / Carrier differential input signal
SIF1Y 28 32 30
Functional Description
3 - 5
TDA 6930
Wireless Components
Specification, August 1999
3.3 Internal circuits
Functional Description
3 - 6
TDA 6930
Wireless Components
Specification, August 1999
3.4 Functional Description (P-DSO-32)
â– Inputs
The input signal is distributed via the IF-MUX to the according amplifier
channels.
VIF-Mux
Normaly VIF1 is used for video if input ( filter with no sound carrier).
A special mode with a secondary VIF input at SIF 2 is available. In this case
the carrier recovery gets its input signal in any way from SIF1. For more
Information see input selection logic-table in the application circuit section.
In the also available Intercarrier mode for low cost application, all signals are
transferred together via VIF1 or VIF2 input, depending on input switching
logic.
SIF-Mux
SIF1 input is used for DF-sound and carrier recovery ( double channel filter ).
For L‘ inverted sideband application SIF2 is used instead.
AMSIF input is used for all AM sound norms with switchable input filter.
■IF gain controlled amplifier‘s
The TDA 6930X incorporates a Video-IF demodulation part (VIF), a AM-
sound demodulation part (AMSIF) and a Section for PIC-carrier recovery +
FM/NICAM SIF conversion (SIF). Each path has its own four-stage capaci-
tively coupled, gain controlled amplifier.
■AGC‘s
Tuner AGC
A delayed tuner AGC voltage is derived from the VIF-AGC via an inverting
threshold amplifier ( increasing VIF input voltage decreases the AGCOUT
voltage ). Its take over point with positiv control direction is set by means of
a external potentiometer.
To avoid regulation oszillation the input has a shared characteristic and the
output is clamped to min 0.3 V which prevents for coming into gain control
inversion at low regulation voltage levels in several tuner application.
VIF AGCs
The AGC for the video-IF-amplifier (VIF) has a peak detector for both kinds
of modulation. An additional mean value detector will increase the control
current for positive modulation if the input signal decreases more than ca.
15 dB. In this case a hysteresis keeps the high control current until the mean
value increases by ca. 10 dB. This and an extremly large sample time pre-
vents from AGC oszillation with critical signals.
SIF / AMSIF AGC‘s
The AGC‘s for the AM- sound section and PIC-carrier recovery +FM/NICAM
section use envelope detectors with extremely low destortion for the SIF
amplifiers.
Functional Description
3 - 7
TDA 6930
Wireless Components
Specification, August 1999
They have a quick charge circuit which increases the charge current by a
factor of 1500 if the mean value of the signal increases by more than 10 dB.
The time constants of the AGCs can be set by the according external capac-
itor.
â– FPLL
FPLL carrier Recovery
High perfomance in terms of FM sound, digital sound and videotext is
obtained by means of a combined path for carrier recovery and FM/NICAM
SIF (QPT). The input signal for this section is derived from the QPT SIF I/II
input to overcome Nyquist slope distortions in all cases. For L‘-applications
the VCO frequency is switched internally, thus no external tank circuit
switching is necessary. Adjustment of the tank circuit (only necessary for the
AFC) is achieved by aligning the AFC voltage to a certain value except in L‘-
mode. In L‘-mode the AFC needs to be adjusted via control voltage at pin
SSW2.
APC
For best video demodulation a phase locked clean carrier is needed. Due to
differences in the filter and amplifier characteristics of the amplifier channels
it is necessary to align the phase of the recovered carrier to the incoming sig-
nal of VIF port . The possible phase control margin of the therefore used
APC is +180 ° to -180 °.
For best performance 2 external low pass capacitors are added at the P-
DSO-32 package. In this case the APC is extremly stable at carrier zero time
and over modulation. This feature is not available in the less than 32 pin
packages .
VCO
The VCO consists of a temperature compensated stacked symmetrical ECL
multivibrator and devider by 2 . The main tank circuit is aligned to twice of
the recovery frequency. All internal signals are of symmetrical ECL type.
This is necessary for small amplitudes with high temperature stability and
low oscillator radiation.
â– Video demodulation + output
Video IF Demodulation
A real synchronous demodulator receives an inphase carrier via the auto-
matic phase control (APC) from the FPLL. Thus, low differential phase and
gain, high intermodulation ratio und good impuls response is achieved with-
outh any aligment.
â– DF-Mixer / FM sound conversion
The SIF-Sound/PIC-carrier section gets its input signal from SIF1 except in
L‘-NICAM mode, then input SIF 2 is active. The SIF- signal is mixed with the
90°-carrier from the FPLL to generate the 2. sound IF at the according output
(DF). This output is always active except in Mac standard, there both sound
outputs are off.
Functional Description
3 - 8
TDA 6930
Wireless Components
Specification, August 1999
â– AM-Audio Sound demodulation
The AM-sound section uses the envelope detector of the AGC to demodu-
late the AM sound signal. An optimized special AM-sound demodulator and
the envelope detector garantee an extremely low AF output destortion. In
case of L or L‘ standard the AM-AF output is active, in other standards this
output is inactive.
According to the standard switches FM/NICAM and/or AM processing is per-
formed.
â– AFC + Adjust
The AFC consists of a high inpedance input comparator who gets its control
voltage from the loopfilter / VCO charge pump capacitor. Its OTA output volt-
age swing and gain can be controlled via the necessary external load resis-
tors
The adjust is controlled by norm switch inputs and is only aktive in L‘ mode.
The operation is performed by controlling the reference input voltage of the
AFC comparator.
â– Switches
The internal I2L norm switch decoding logic is buffered by PNP comparator
interfaces with hysteresis.
Therefore the input signal voltage margin at SSW1 and SSW2 is 0 - vcc
â– Voltage reference
The reference voltage is performed by a temperature compensated band-
gap structure with extremly low noise and high ripple rejection (PSSR). The
reference voltage distribution is done by 3 buffer amplifiers with extremly
high ripple rejection (PSSR).
Functional Description
3 - 9
TDA 6930
Wireless Components
Specification, August 1999
3.5 Block Diagram (P-DSO-32)
Block.ps
Figure 3-4 Block Diagram (P-DSO-32)
4Applications
4.1 Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.1 Application Circuit P-DSO-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.2 Application Circuit P-DSO-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.1.3 Application Circuit S-DIP-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.2 Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.2.1 Typical input-filter concept 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.2.2 Typical input-filter concept 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.2.3 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Contents of this Chapter
Applications
4 - 2
TDA 6930
Wireless Components
Specification, August 1999
4.1 Circuits
4.1.1 Application Circuit P-DSO-28
Apllso28.ps
Figure 4-1 Application Circuit P-DSO-28
Applications
4 - 3
TDA 6930
Wireless Components
Specification, August 1999
4.1.2 Application Circuit P-DSO-32
Apllso32.eps
Figure 4-2 Application Circuit P-DSO-32
Applications
4 - 4
TDA 6930
Wireless Components
Specification, August 1999
4.1.3 Application Circuit S-DIP-30
Apllso32.eps
Figure 4-3 Application Circuit S-DIP-30
Applications
4 - 5
TDA 6930
Wireless Components
Specification, August 1999
4.2 Hints
table1: input selection logic
SIF1 VIF1 SSW1 SSW2 VCO*
MHz
* ..internal VCO : 2 2)..VIF = Vision- IF, SIF=Sound-IF + Carrier
S-DIP-30 : SIF1=pin29,30; SIF2=pin1,2; VIF1=pin26,27; VIF2=pin1,2; SSW1=pin19; SSW2=pin18
P-DSO-32 : SIF1=pin31,32; SIF2=pin1,2; VIF1=pin28,29; VIF2=pin1,2; SSW1=pin21; SSW2=pin20
selected inputs2modu-
lation AGC-type / ratio AM
AF AFC
adjust norm
VIF SIF
HHHH38.9VIF1SIF1neg. syncpea k / 1:83 mute off BG
H H H L 38.9 VIF1 SIF1 neg. syncpeak,average / 1:8300 mute off (Mac)
H H L H 33.9 VIF1 SIF2 pos. whitepeak,average / 1:8300 on on L‘
H H L L 38.9 VIF1 SIF1 pos. whitepeak,average / 1:8300 on off L
H L H H 38.9 VIF2 SIF1 neg. syncpeak / 1:83 mute off BG
HLHL38.9VIF2SIF1neg.
syncpeak,average / 1:8300 mute off (Mac)
H L L H 33.9 VIF2 SIF1 pos. whitepeak,average / 1:8300 on on L‘
H L L L 38.9 VIF2 SIF1 pos. whitepeak,average / 1:8300 on off L
L H H H 38.9 VIF1 VIF1 neg. syncpeak / 1:83 mute off intercarrier BG
L H H L 38.9 VIF1 VIF1 neg. syncpeak,average / 1:8300 mute off intercarrier (Mac)
LHLH33.9VIF1VIF1pos.
whitepeak,average / 1:8300 on on intercarrier L‘
L H L L 38.9 VIF1 VIF1 pos. whitepeak,average / 1:8300 on off intercarrier L
L L H H 38.9 VIF2 VIF2 neg. syncpeak / 1:83 mute off intercarrier BG
L L H L 38.9 VIF2 VIF2 neg. syncpeak,average / :8300 mute off intercarrier (Mac)
L L L H 33.9 VIF2 VIF2 pos. whitepeak,average / 1:8300 on on intercarrier L‘
LLLL38.9VIF2VIF2pos.
whitepeak,average / 1:8300 on off intercarrier L
Applications
4 - 6
TDA 6930
Wireless Components
Specification, August 1999
4.2.1 Typical input-filter concept 1
nokia.tif
Applications
4 - 7
TDA 6930
Wireless Components
Specification, August 1999
4.2.2 Typical input-filter concept 2
Grundig1.tif
Applications
4 - 8
TDA 6930
Wireless Components
Specification, August 1999
4.2.3 Application hints
*) internal VCO : 2 frequency for any norm except L‘
**) internal VCO : 2 frequency for L‘
â– Application note 1 : Adjusting the tank circuit
At the desired IF-frequency the AFC-output current has to be zero. Therefore
the voltage at that pin will be Vs/2. This is achieved by adjusting 1st the coil, 2nd
Ra for L‘ mode.
No further aligment e.g. for sound S/N is necessary.
â– Application note 2 : FPLL, loopfilter response
Measuring the frequency response of the loop.
The frequency response of the FPLL can be measured at the loopfilter output
Pin 10. If a frequency modulated carrier is applied to the Picture carrier input the
demodulated signal occures at Pin 10. Within its bandwidth the FPLL can track
modulation frequencies, thus this frequencies can be measured there. The fre-
quency response with the recommended loopfilter can be seen in the picture
below.
Designi ng the freque ncy re sp ons e
There should be no overshoot until 20 kHz. The bandwidth has to be high
enough to control the destortions generated by the tuner. To reject intercarrier
buzz at 250 kHz video modulation the loop filter response at that frequency
should be as low as possible.
Table 4-1 AFC adjust and VCO tank circuit dimension 1st VCO*
(frequency = 38.9 MHz)
2nd VCO frequency** Ra Rb Lc Cc
33.4 MHz 10k 4.7k 120nH 19.5pF
33.9 MHz 4.7k 10k 120nH 18pF
U10 (f)
U10 (o)
-3 dB
10 100 1k 10k 100k 1M 10M
0dB
10dB
-20dB
-30dB
-40dB
Applications
4 - 9
TDA 6930
Wireless Components
Specification, August 1999
â– Application note 3 : Equations
Resonance frequency :
Damping fac tor: ν = π fn CLF RLF µA
Phase dete cto r gain: KOI = 250 –––
rad
MHz
VCO-gain: KO = 2π 2 ––––
V
with tank circuit: 120 nH || 18 pF
Loopfilter capacitor: CLF recommended CLF = 1µ
Loopfilter resistor: RLF recommended RLF = 120Ω
A second capacitor in parallel with RLF is recommend
to reduce the response at 250 kHz CP= 4.7 nF
Values:
With the recommend tank circuit and loopfilter
VCO range: ∆fpp = 4 MHz
Resonance frequency: fn = 9 kHz
Damping fac tor: ν = 8.5
Loop cut off frequency: f-3dB = 100 kHz
1K
O KDI
fn = ––– √ ––––––––
2Ï€CLF
5Reference
5.1 Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.2 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.1.3 AC/DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.2 Electrical Diagramms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.1 Typical VIF AGC voltage characteristic . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.2 Typical VIF intermodulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.2 Typical VIF intermodulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.3 Typical AM AF S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.2.4 Typical AM Audio THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.2.5 Typical DC-current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
5.2.6 Typical AF amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
Contents of this Chapter
Reference
5 - 2
TDA 6930
Wireless Components
Specification, August 1999
5.1 Electrical Data
5.1.1 Absolute Maximum Ratings
WARNING
The maximum ratings may not be exceeded under any circumstances, not even
momentarily and individually, as permanent damage to the IC will result.
Table 5-1 Absolute Maximum Ratings
Parameter Symbol Limit Values Unit Remarks
min max
Supply voltage Vcc, Vcc1 010 V
Supply voltage (S-DIP-30 only) Vcc, Vcc1 012 V
Output current ( RLmin = 500 Ω) ITRAPOUT 0 6mA
Output current ( RLmin = 2 kΩ) Iuref3! 0 3mA
Output current IAGCOUT 0 25 mA
Out put voltages VSIFAGC‘s 0 3.6 V
Output voltage VAGCOUT 0 12 V
Output voltage VAFCOUT 0 Vcc V
Output voltage VDFOUT 0 Vcc V
Output voltage VAFOUT 0 Vcc V
Output voltage VAGCM 0 3.6 < Vcc V
Output voltage VTRAPOUT 0 Vcc V
Output voltage Vuref3! 07 < Vcc V
Input voltage VAGCREF 0 3.6 < Vcc V
Input voltages VVIF,SIF 0 Vcc V
Input voltages VSSW 0 Vcc V
Input voltages VTP 0 6 < Vcc V
Input voltages VVCO 0 4.5 < Vcc V
Input voltage VPDLOOP 0 6 < Vcc V
Reference
5 - 3
TDA 6930
Wireless Components
Specification, August 1999
All voltage values are referenced to ground, if not stated otherwise.
5.1.2 Operating Range
Within the operating range the IC operates as described in the circuit
des cription. The AC / DC characteristic limits are not guaranteed .
All voltage values are referenced to ground, if not stated otherwise.
Table 5-1 Absolute Maximum Ratings (continued)
Parameter Symbol Limit Values Unit Remarks
min max
ESD-voltage all pins
HBM ( R=1.5kΩ , C=100pF ) VESD -4 4 kV
Junction temperature Tj150 °C
Storage tempera tue Tstg - 40 125 °C
Thermal resistance P-DSO28 (sys-air) TthSA 76 K/W
Thermal resistance P-DSO32 (sys-air) TthSA 76 K/W
Thermal resistance S-DIP30 (sys-air) TthSA 57 K/W
Ta ble 5-2 Operating Range
Parameter Symbol Limit Values Unit Test
Conditions L Item
min max
Supply voltage Vcc,Vcc1 7.5 10 V
Supply v olt age (S-DIP-30 onl y) Vcc, Vcc1 7.5 12 V
Tuner AGC supply voltage VAGCOUT 0.6 10 V
IF-input frequency range
VIF, SIF , AMSIF fin 12 60 MHz
IF-input AC-voltages V50 µVrms 120 mVrms
Ambient temperature during
operation TA-10 85 °C
Reference
5 - 4
TDA 6930
Wireless Components
Specification, August 1999
5.1.3 AC/DC Characteristics
Table 5-3 AC/DC Characteristics with TA 25 °C, VCC = 8.5 V
Symbol Limit Values Unit Test Conditions L Item
min typ max
Power Supply
Total current consumption ICC+ICC1 90 mA RL>1MΩ,CL<1.5pf
Reference voltage Vuref3! 5.7 6.0 6.3 VRL>1MΩ,CL<1.5pf
Reference voltage Iuref3! 2mA
Norm switches
H Level V SSW 2 5 V
L Level V SSW 0 1 V
external load at SSW2 if
high I SSW2 1% of resistor devider
current
IF inputs
DC level V IF 3.4 3.6 3.8 VV
IF= 0 Vpp
Mono / Intercarrieraktive I SIF1 100 400 µARGnd < 27 kΩ
2nd. IF input VIF2 aktive I VIF1 100 400 µARGnd < 27 kΩ
VCO
Tank circuit, DC level V VCO 2.6 V
Loopfilter voltage V PDloop 2.3 5V dependant on input
frequency
Peak - detector VIF-AGC
Voltage range V AGCH 03.6 V dependant on input
amplitude
AGC time constant B/G standard
Charge current I AGCH 1mA VAGCH = 2V,
VTRAPOUT < 1.0V
Discharge current I AGCH 12 µAVAGCH = 2V,
VTRAPOUT > 2.0V
Charge / discharge ratio AGCH 83
Reference
5 - 5
TDA 6930
Wireless Components
Specification, August 1999
Table 5-3 AC/DC Characteristics with TA 25 °C, VCC = 8.5 V (continued)
Symbol Limit Values Unit Test Conditions L Item
min typ max
AGC time constant with L-Standard or Mac Standard
Charge current I AGCH 1mA VAGCH = 2V,
VTRAPOUT > 3.0V
Discharge current I AGCH 120 nA VAGCH=2V,
VTRAPOUT = 2.5V
Discharge current
( under average cont rol ) I AGCH 100 µA VAGCH = 2V,
VTRAPOUT < 1.0V
Charge / discharge ratio AGCH 8300
Envelope - detector AGCs
Voltage range VSIFAgcs 0.2 2.9 V dependant on input
amplitude
Charge / discharge current ± ISIFAgcs 1.5 µAVSIFAgcs = 1.5 V
Quic k charge ISIFAgcs 1.5 mA VSIFAgcs = 1.5 V
Video output
Output current - ITrapout 0.84 mA VAGCM = Vsync +0.7
VVIF =Carrier nomod.
Sync pulse level VTrapout 1.25 V
White level VTrapout 2.75 V
AM output
DC level (L, L’) VAMAFout 3.2 3.6 4.0 VSC
nomod.
DC level (AM inactive ) VAMAFout high impedance
DF output
DC level VFMDFout 2.8 3.4 4.0 V
Output current IFMDFout 2.5 mA VFMDFout =
DC level +0.7V
AFC output
Voltage range VAFCout 1V VS-1V V
Output current IAFCout 250 µAVAFC = Vcc / 2
Voltage at centerf requency VAFCout Vcc /
2V 1:1 Vcc devider
Slope IAFCout 0.7 µA/kHz
AFC - adjust VSSW2 3 5 V switch at SS W2:
high impedance
Reference
5 - 6
TDA 6930
Wireless Components
Specification, August 1999
Table 5-3 AC/DC Characteristics with TA 25 °C, VCC = 8.5 V (continued)
Symbol Limit Values Unit Test Conditions L Item
min typ max
Tuner AGC
Max. output current
max. 1ms I AGCOUT 10 18 30 mA V AGCOUT = 4V
R AGCOUT = 0 Ω
Min. output current I AGCOUT 010 µAV AGCOUT = VCC1
V AGCREF = max
Output short current I AGCOUT 150 200 250 µAV AGCOUT = 0 V
R AGCOUT = ∞
Min. output voltage V AGCOUT 0.2 0.3 0.5 VR AGCOUT = ∞
IF inputs
Control range ∆ VVIF,SIF 54 60 dB
Min. input voltage VVIF,SIF 120 180 µVrms VTrapout = -3 dB
AGC range ∆ VAMSIF 54 60 dB
Min. input voltage VAMSIF 120 180 µVrms VAMAFout = -3 dB
Video output , VIF OFW G1962M sound shelf -20 dB
Signal level VTrapout 1.25 1.5 1.75 Vpp B/G norm
Video bandwidth f -1dB 7 8 MHz VTrapout = -1 dB
Differrential Gain DG 4% RL>1MΩ,CL<1.5pf
Differrential Phase DP 1.5 deg RL>1MΩ,CL<1.5pf
Intermodulation
f1 = 4.52MHz, PC modu-
lated from black to white,
f2 = 5.50 MHz, SC -13 dB
to unmodulated PC
@IM 62 dB f = 980 KHz
Levels at Trapout
f1 = - 2.0 dB
f2 = - 13 dB
RL>1MΩ,CL<1.5pf
Intermodulation
f1 = 4.4MHz, -13.2 dB to
PC sync level, -10 dB to
PC modulated from black
to white,
f2 = 5.50 MHz, SC -7 dB to
unmodulated PC
@IM 69 dB f = 1.1 MHz
Levels at IF input
f1 =-13.2dB to sync
f2 =-27 dB to PC
RL>1MΩ,CL<1.5pf
S/N CCIR Unified WTD
S/N CCIR 567 Unweighted 60
55 65
59 dB
dB VIF = max.
black & white
residual vi sio n carri er VTrapout 500 µVrms RL>1M,f=38.9MHz
residual VCO carrier VTrapout 350 µVrms RL>1M,f=77.8MHz
Reference
5 - 7
TDA 6930
Wireless Components
Specification, August 1999
Table 5-3 AC/DC Characteristics with TA 25 °C, VCC = 8.5 V (continued)
Symbol Limit Values Unit Test Conditions L Item
min typ max
DF output
Signal level
Input wideband trans-
former coupled
VFMDFout 100 mVrms SC / PC= -13 dB PC
nomod.
Output current IFMDFout 2.5 mA VFMDFout =
DC level +0.7V
S/N
CCIR WTD 58 dB PIC=FubK Pattern
VIF = max.
AM output : no picture carrier , AM SIF OFW L9453M
Signal level VAMAFout 700 900 1100 mVrms m = 80% , 1kHz
THD total 0.25 0.5 % m = 30% , 1kHz
THD total 0.35 1.0 % m = 80% , 1kHz
S/N
Quasi Peak CCIR WTD 60 dB m = 80% , 1kHz
VAMAFout = +3 dB
AM output : picture carrier FubK modulation, AM SIF OFW L9453M
Signal level VAMAFout 700 900 1100 mVrms m = 80% , 1kHz
THD 2 x fo 0.1 0.25 % m = 30% , 1kHz
THD total 1.5 2.0 % m = 30% , 1kHz
THD 2 x fo 0.2 0.5 % m = 80% , 1kHz
THD total 0.7 1.5 % m = 80% , 1kHz
S/N
Quasi Peak CCIR WTD 45 dB m = 80% , 1kHz
VAMAFout = +3 dB
Reference
5 - 8
TDA 6930
Wireless Components
Specification, August 1999
5.2 Electrical Diagramms
5.2.1 Typical VIF AGC voltage characteristic
as a function of input signal
zfagc.eps
5.2.2 Typical VIF intermodulation
as a function of input signal
Intermod.eps
(
V
)
: Uin
(
dBm
)(
43
)
U AGC
-65 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 Uin(dB
m
0
500m
1
1.5
2
2.5
3
3.5
4
(V)
(dB):Abregelung(dB) (26)intermod (29)farbtrae (30)tontrae (27)1MHz-Ref
0 10 20 30 40 50 60 70 80 Abregelung(d
B
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
5
(dB)
Reference
5 - 9
TDA 6930
Wireless Components
Specification, August 1999
5.2.3 Typical AM AF S/N
as a function of input signal
Amnfsn.eps
5.2.4 Typical AM Audio THD
as a function of input signal : m=80%
nfklirrf.eps
(dB):Uin(dBm) (48)U_NF (48)Ur
-90 -80 -70 -60 -50 -40 -30 -20 -10 0 Uin(dB
m
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
(
dB
)
(%) : Uin(dBm) (48)KLIRR
-70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 Uin(dBm
)
0
500m
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
(%)
Reference
5 - 10
TDA 6930
Wireless Components
Specification, August 1999
5.2.5 Typical DC-current consumption
as a function of VCC
5.2.6 Typical AF amplitude
as a function of input signal m=80%
nfpegel.eps
Icc(A)
0.0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
Vcc(V)
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
Icc(A) : Vcc(V) I_PIN
(V): Uin(dBm) (48)U_NF
-90 -80 -70 -60 -50 -40 -30 -20 -10 0 Uin(dBm
)
0
200m
400m
600m
800m
1
1.2
1.4
1.6
(V)
