Evaluates: MAX2769
MAX2769 Evaluation Kit
General Description
The MAX2769 evaluation kit (EV kit) simplifies evaluation
of the MAX2769 universal GPS receiver. It enables
testing of the device performance and requires no additional
support circuitry. Standard 50Ω SMA connectors are
included on the EV kit for the inputs and outputs to allow
for quick and easy evaluation on the test bench. The
evaluation kit is fully assembled and tested at the factory.
This document provides a component list, a list of equipment
required to evaluate the device, a straightforward test
procedure to verify functionality, a description of the EV kit
circuit, the circuit schematic, and artwork for each layer of
the printed circuit board (PCB).
Features
●Easy Evaluation of the MAX2769 IC
●+2.7V to +3.3V Single-Supply Operation
● 50Ω SMA Connector on the RF Ports and for the
Baseband Outputs
●All Critical Peripheral Components Included
●Parallel Port for 3-Wire Interfacing
● PC Control Software Available Upon Request
19-8782; Rev 0; 3/17
Quick Start
The MAX2769 EV kit includes two on-board MAX8510
linear regulators for powering up the MAX2769 device to a
regulated supply voltage of +2.85V. When using the linear
regulators, connect pins 1-2 of jumpers W16 and W17.
The MAX2769 can also be powered directly through an
external power supply through pin 2 of the jumpers (see
Figure 1 for details).
Required Test Equipment
This section lists the recommended test equipment to
verify operation of the MAX2769. It is intended as a guide
only and some substitutions are possible.
• One RF signal generator capable of delivering at least
+5dBm of output power at the operating frequency
(e.g., HP E4433B or equivalent)
• An RF spectrum analyzer that covers the MAX2769
operating frequency range (e.g., FSEB20, or equivalent)
• A power supply capable of up to 1A at +2.7V to +6V
• One ammeter for measuring the supply current
(optional)
• 50Ω SMA cables
• A network analyzer (e.g., HP 8753D or equivalent) to
measure small-signal return loss (optional)
• A dual power supply capable of delivering up to 1A
at ±5V
• A user-supplied IBM-compatible PC
• Oscilliscope or logic analyzer to measure digital outputs
(optional)
#Denotes RoHS-compliant
PART TYPE
MAX2769EVKIT# EV Kit
Ordering Information
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Evaluates: MAX2769
MAX2769 Evaluation Kit
Connections and Setup
This section provides a step-by-step guide to operating
the EV kit and testing the device functions. Caution: Do
not turn on the DC power or RF signal generators
until all connections are completed.
1) Connect the PC to the INTF3000 interface board
using the USB cable. On the INTF3000, remove
jumper JU1, and connect a DC supply set to +3V to
the VPULL connector. Connect the 25-pin connector
of the INTF3000 (J4) directly to the 25-pin connector
of the EV kit (JDR1).
2) Connect a DC supply set to +3V (through an ammeter
if desired) to jumpers W19 and W20 on the EV kit. Do
not turn on the supply. When using the on-board linear
regulators to power the MAX2769, connect pins 1-2 of
jumpers W16 and W17.
3) Connect a DC supply set to +5V to jumper W12 on the
EV kit. Connect a DC supply set to -5V to jumper W11
on the EV kit. Do not turn on the supply.
4) Make sure that jumpers W1–W9 and W18 are shorted
for proper supply connection.
5) Leave jumpers W13, W14, W15, and W28 open
and connect jumper W23 to ground (pins 1-2) if the
MAX2769 is evaluated using a 3-wire bus.
6) Set the signal generator to 1575.42MHz, -110dBm.
Do not turn on the generator’s output. Connect the RF
signal generator to the LNA1 input.
7) Connect LNA_OUT SMA connector (J8) to the MIX_IN
SMA connector (J12) on the EV kit.
8) Connect the output of the MAX4444 buffer (connector
J3) on the EV kit to a spectrum analyzer.
9) Turn on the DC supply. The supply current should
read approximately 20mA.
10) Visit HERE to download the latest version of the EV
kit software, MAX2769A_Setup_2-0-1.exe. Run the
installation file.
11) Run the control software on an IBM-compatible PC.
Load the default state by clicking Settings, then
defaults, also set the SHDN and IDEL pins to 1, under
“Entry” page, Hardware Control section. Upon device
power-up, the default state should set the MAX2769
device in automatic-gain-control mode (AGCMODE
= 00, PGAIEN = 1, and PGAQEN = 0). The default
configuration will set the center frequency to 3.9MHz
and a bandwidth of 2.5MHz. Using the control
software, configure the following:
a) In the “Entry” page of the graphical user interface
(GUI), set the reference frequency to 16.368MHz.
b) Set the R divider to 16.
c) Enable the I and Q channels by setting the
IQ enable = 1.
d)
Set the “output level” to 1X = analog outputs
through the “Entry” page or configuration register 2.
12) Activate the RF generator and observe the IF signal at
4.092MHz at an I_OUT_ANA SMA connector J3.
13) Set the “output level” to 00 = CMOS logic through the
“Entry” page and observe the ADC digital output at
J9A–J9D header pins.
Layout Issues
A good PCB is an essential part of an RF circuit design.
The EV kit PCB can serve as a guide for laying out
a board using the devices. Keep traces carrying RF
signals as short as possible to minimize radiation and
insertion loss. Use impedance control on all RF signal
traces. The exposed paddle must be soldered evenly
to the board’s ground plane for proper operation. Use
abundant throughputs beneath the exposed paddle and
between RF traces to minimize undesired RF coupling.
To minimize coupling between different sections of the
IC, each VCC pin must have a bypass capacitor with
low impedance to the closest ground at the frequency
of interest. Do not share ground vias among multiple
connections to the PCB ground plane. Refer to the Layout
Issues section of the MAX2769 IC data sheet for more
information.
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Evaluates: MAX2769
MAX2769 Evaluation Kit
DESIGNATION QTY DESCRIPTION
C1–C4, C7, C16–C19, C21, C22, C23,
C41–C45, C48, C49, C50, C53, C54, C55 23 0.1µF ±10% capacitors (0402)
Murata GRM155R61A104K
C5, C8–C12, C14, C31, C40, C56, C67 11 100pF ±5% capacitors (0402)
Murata GRM1555C1H101J
C6, C61, C62 3 10µF ±10% tantalum capacitors (B case)
AVX TAJB106K016
C15, C25, C27, C29, C30, C57, C58, C65 8 0.01µF ±10% capacitors (0402)
Murata GRM155R71C103K
C24 1 27pF ±5% capacitor (0402)
Murata GRM1555C1H270J
C26, C36 2 6800pF ±10% capacitors (0402)
Murata GRM155R71H682K
C28 1 470pF ±10% capacitor (0402)
Murata GRM155R71H471K
C32–C35, C37, C38, C39, C58, C66, C68, C69 0 Not installed, capacitors
C46, C47, C51, C52 4 10pF ±5% capacitors (0402)
Murata GRM1555C1H10R0J
C59, C60, C63, C64, C70 5 1.0µF ±10% capacitors (0402)
Murata GRM155R60J105K
J1, J2, J3, J6, J7, J8, J10, J11, J12 9
SMA end-launch jack
receptacles, 0.062in
Johnson 142-0701-801
J9 1 2 x 5 dual inline header, 100-mil center
Sullins PEC36DAAN
JDR1 1DB25 right-angle male connector
AMP 5747238-4
L2, L3 0 Not installed, inductors
R1, R26–R29, R35–R43, R56 0 Not installed, resistors
R2, R10, R17, R21, R22, R23, R31–R34, R44–R55, R57, R59,
R60, R66, R67, R68, R71 29 0Ω ±5% resistors (0402)
R4, R24, R25 320kΩ ±5% resistors (0402)
R5–R9, R30, R61–R65, R69, R70 13 10kΩ ±1% resistors (0402)
R11, R14, R15 347.5Ω ±1% resistors (0402)
R12, R13, R18, R19 475Ω ±1% resistors (0402)
R16 122.1Ω ±1% resistor (0402)
R20 1100kΩ ±1% resistor (0402)
MAX2769 Evaluation Kit Bill of Materials
Note: Indicate that you are using the MAX2769 when contacting these component suppliers.
SUPPLIER WEBSITE
AVX Corp. www.avx.com
Murata Mfg. Co., Ltd. www.murata.com
Rakon Ltd. www.rakon.com
Texas Instruments www.ti.com
Component Suppliers
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Evaluates: MAX2769
MAX2769 Evaluation Kit
DESIGNATION QTY DESCRIPTION
T1, T2, T3 0 Not installed
TP1–TP5, TP10, TP11, TP15 8PC mini-red test points
Keystone 5000
U1, U2 2 MAX8510EXK29+ ultra-low-noise, high PSRR, low-dropout,
120mA linear regulators
U8 1 16.368MHz TCXO
Rakon IT3205BE
U10, U11, U28 0 Not installed
U12, U18 2 MAX4444ESE+ ultra-high-speed, low-distortion, differential-
to-single-ended line receivers
U14 1 MAX4447ESE+ 6500V/µs wideband, high-output-current,
single-ended-to-differential line driver
U21 1 MAX2769ETI+ low-power, single-conversion, low-IF GPS
receiver
U23 1 SN74LV07ADR hex buffer/driver with open-drain output
Texas Instruments SN74LV 07ADR
W1–W12, W18, W19, W20, W28 16 1 x 2 inline headers, 100-mil center
Sullins PEC36SAAN
W13–W17, W23 6 1 x 3-inline headers, 100-mil center
Sullins PEC36SAAN
Y2 0 Not installed
— 17
Shorting jumpers, gold nish contact
(W1–W9, W13–W18, W23, W28)
Sullins SSC02SYAN
MAX2769 Evaluation Kit Bill of Materials (continued)
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MAX2769 Evaluation Kit
Figure 1. MAX2769 EV Kit Schematic
5
5
4
4
3
3
2
2
1
1
E
E
D
D
C
C
B
B
A
A
VCC_D_IN
VDD_D
VCC_BUFF
IDLE_B
DATA
VCC_A
VCC_D_IN
VCC_D_IN
VCC_D_IN
VCC_IF
VCC_ADC
VCC_A VCC_VCO
VCC_VCO
VCC_A
VCC_RF
VCC_A
VCC_CP
VCC_A
VCC_TCXO
VCC_D
VCC_D
VCC_CP
CS_B
VCC_A
VCC_D_IN
VCC_RF
VCC_IF
S_CLK
VCC_ADC
CP_OUT
Q_OUT
SHDN_B
I_OUT
VCC_D_IN VCC_BUFF1
IDLE_B
SHDNB_IN
CS_B_IN
I1
SCLK_IN
Q1
Q0
LD_OUT
CLK
ID_EB_IN
D_IN
I-
I+
Q+
Q-
CLK_OUT
VCC_D
+5
-5
+5
+3
+5
-5
VDD_D
VDD_D
VCC_TCXO
+5
-5
VCC_BUFF
-5
+5
-5
-5
-5
+5
+5
VCC_BUFF
VCC_BUFF1
FILTER_IN
RF_LNA1_IN
VP5_IN
VN5_IN
LOCK_DET REF_IN
RF_LNA2_IN
I_OUT_ANA
Pin1
RSX-5 Xtal: Pin 1 to AC Coupling Cap. Others shorted to GND
Interposer Part # 9500-0019-2
Q_OUT_ANA
I-_OUT
I+_OUT
Q-_OUT
Q+_OUT
CLK_OUT
Note: R47, R48, R52, R54 are 0 ohms in Analog Mode,
OPEN
OPEN OPEN
OPEN
OPEN OPEN OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
MAX2769 Evaluation Kit
REV 4A Sheet 1 of 1
R47, R48, R52, R54 are OPEN in Digital Modes.
ANALOG VERSION
OPEN
OPEN
OPEN OPEN
OPEN
C37
100n
C37
100n
R48 0R48 0
R27
100k
R27
100k
R44 0R44 0
R4
20K
R4
20K
R71
0 ohm
R71
0 ohm
C18
0.1u
C18
0.1u
C70
1uF
C70
1uF
R39 1kR39 1k
R11
47.5
R11
47.5
C10
100p
C10
100p
+
C61
10u
+
C61
10u
1
2345
J2J2
1
2
W10W10
R20
100k
R20
100k
R37
1k
R37
1k
C1
0.1u
C1
0.1u
W5W5
C58
0.01u
C58
0.01u
C12
100p
C12
100p
C63
1u
C63
1u
C47
10pF
C47
10pF
R6 10K
R6 10K
3 1
2
W14W14
R60
0
R60
0
1
2345
J7J7
C25 10n
C25 10n
R29
100k
R29
100k
C34
8p
C34
8p
C28
0.47n
C28
0.47n
3 4
5
1 6
2
T2
ADTT4-1
T2
ADTT4-1
C59
1u
C59
1u
R15
47.5
R15
47.5
C55
0.1u
C55
0.1u
R40
1k
R40
1k
7
OUT
8
GND
J9DJ9D
R50 0R50 0
R43
0
R43
0
SHDN
3
IN
1OUT 5
BP 4
GND
2
U1
MAX8510EXK29+
U1
MAX8510EXK29+
C22
0.1u
C22
0.1u
C3
0.1u
C3
0.1u
C16
0.1u
C16
0.1u
C67
100p
C67
100p
R12
75
R12
75
W2W2
C41
100n
C41
100n
R53 0
R53 0
R1R1
L2 33nHL2 33nH
IN 1
CG2 2
CG5
5
OUT
4
G3
U11
SAFEB1G57KA0F00R1S
U11
SAFEB1G57KA0F00R1S
Y2
RSX-5
Y2
RSX-5
C29
10n
C29
10n
C42
100n
C42
100n
R65 10K
R65 10K
A1
TP10
LOCK_DET
TP10
LOCK_DET
1A
1
1Y
2
2A
3
2Y
4
3A
5
3Y
6
GND
74Y 8
4A 9
5Y 10
5A 11
6Y 12
6A 13
VCC 14
U23
SN74LV07ADR
U23
SN74LV07ADR
R70
10k
R70
10k
C65
10n
C65
10n
C30
10n
C30
10n
R13
75
R13
75
C15 10n
C15 10n
C69 6.8nC69 6.8n
C43
100n
C43
100n
R19
75
R19
75
1
2345
J10J10
R38
200
R38
200
R59 0R59 0
C5 100pC5 100p
C60
1u
C60
1u
R51
0
R51
0
R33 0R33 0
A1
TP15
SHDNB
TP15
SHDNB
ANT_FLAG
1
LNA_OUT
2
ANT_BIAS
3
VCC_RF
4
MIX_IN
5
LD
6
7
SHDNB
DATA
8
CLK
9
CS_B
10
VCC_VCO
11
CP_OUT
12
VCC_CP
13
14
VCC_BUFF
15
REF/XTAL
16
CLK_OUT
Q1_OUT 17
Q0_OUT 18
VDD_ADC 19
I0_OUT 20
21
I1_OUT
22
OUT_BYP
VCC_IF 23
/IDLE 24
LNA_N2 25
PGM 26
LNA_IN1 27
TSENS 28
U21
MAX2769ETI+
U21
MAX2769ETI+
1
2
W19 JUW19 JU
C68 6.8nC68 6.8n
R62 10KR62 10K
W18W18
L3 12uL3 12u
A
1
TP5
INP
TP5
INP
A1
TP1
ANT_FLAG
TP1
ANT_FLAG
C27
10n
C27
10n
C7
0.1u
C7
0.1u
1
2345
J6J6
3 1
2
W15W15
C54
100n
C54
100n
R67
0
R67
0
1
2
W20 JUW20 JU
R56 0R56 0
A
1
TP3
CP_OUT
TP3
CP_OUT
1A
1
1Y
2
2A
3
2Y
4
3A
5
3Y
6
GND
74Y 8
4A 9
5Y 10
5A 11
6Y 12
6A 13
VCC 14
U28
SN74LV07ADR
U28
SN74LV07ADR
IN
1
CG2 2
CG5
5
OUT 4
G3
U10
SAFEB1G57KA0F00R1S
U10
SAFEB1G57KA0F00R1S
31
2
W16W16
C33
8p
C33
8p
R510K
R510K
C36
6.8n
C36
6.8n
R54
0
R54
0
R34 0R34 0
R16
22.1
R16
22.1
5
OUT
6
GND
J9CJ9C
R21 0
R21 0
R61 10K
R61 10K
3 4
5
1 6
2
T1
ADTT4-1
T1
ADTT4-1
A1
TP11
VCOM_ADC
TP11
VCOM_ADC
R22 0R22 0
C14
100p
C14
100p
C56
100p
C56
100p
VCC1
1
VCC2
2
IN-
3
NC1
4
NC2
5
IN+
6
VEE7
7
VEE8
8EN 9
REF 10
VEE4 11
VEE3 12
VEE2 13
VEE1 14
OUT 15
GND 16
U18
MAX4444ESE+
U18
MAX4444ESE+
W8W8
R7 10KR7 10K
C57
0.01u
C57
0.01u
3 4
5
1 6
2
T3
ADTT4-1
T3
ADTT4-1
W1W1
C64
1u
C64
1u
1
2345
J3J3
C17
0.1u
C17
0.1u
R10 0R10 0
C48 100nC48 100n
GND1 1
VCC 4
GND2
2
OUT
3
U8
IT3200B
U8
IT3200B
R42
0
R42
0
C24
27p
C24
27p
R25
20k
R25
20k
R64 10KR64 10K
C11
100p
C11
100p
C44 100n
C44 100n
R35
200
R35
200
R69
10k
R69
10k
R52
0
R52
0
R57 0R57 0
W4W4
VCC1
1
VCC2
2
NC
3
NC1
4
IN
5
NC2
6
VEE5
7
VEE6
8EN 9
OUT+ 10
VEE4 11
VEE3 12
VEE2 13
VEE1 14
OUT- 15
GND 16
U14
MAX4447ESE+
U14
MAX4447ESE+
R66
0
R66
0
C53
100n
C53
100n
R28
100k
R28
100k
R58 0R58 0
C51
10pF
C51
10pF
R49 0
R49 0
3 1
2
W13W13
C39 100nC39 100n
3 1
2
W23W23
3
OUT
4
GND
J9BJ9B
C31
100p
C31
100p
A1
TP2
T_SEN
TP2
T_SEN
R8 10KR8 10K
VCC1
1
VCC2
2
IN-
3
NC1
4
NC2
5
IN+
6
VEE7
7
VEE8
8EN 9
REF 10
VEE4 11
VEE3 12
VEE2 13
VEE1 14
OUT 15
GND 16
U12
MAX4444ESE+
U12
MAX4444ESE+
R31
0
R31
0
C4
0.1u
C4
0.1u
R47 0R47 0
R9
10K
R9
10K
1
2
W12W12
R23 0R23 0
R41 1kR41 1k
C26 6.8n
C26 6.8n
R17
0
R17
0
1
2345
J11J11
R32 0R32 0
C23
0.1u
C23
0.1u
C40 100PC40 100P
C46
10pF
C46
10pF
1
2345
J12J12
A
1
TP4
INN
TP4
INN
13
13 25 25
12
12 24 24
11
11 23 23
10
10 22 22
9
921 21
8
820 20
7
719 19
6
618 18
5
517 17
4
416 16
3
315 15
2
214 14
1
1
JDR1JDR1
W6W6
C19
0.1u
C19
0.1u
W7W7
1
2345
J8J8
R46 0R46 0
R26
100k
R26
100k
R2 0R2 0
C2
0.1u
C2
0.1u
C45
100n
C45
100n
C21
100n
C21
100n
R55 0R55 0
W28W28
R45 0R45 0
C38 100nC38 100n
C32
8p
C32
8p
C66 100nC66 100n
R24
20k
R24
20k
R36
200
R36
200
C50 0.1u
C50 0.1u
1
OUT
2
GND
J9AJ9A
31
2
W17W17
C6
10u
C6
10u
1
2
W11W11
C8
100p
C8
100p
9
OUT
10
GND
J9EJ9E
W9W9
SHDN
3
IN
1OUT 5
BP 4
GND
2
U2
MAX8510EXK29+
U2
MAX8510EXK29+
+
C62
10u
+
C62
10u
C35
8p
C35
8p
C52
10pF
C52
10pF
R14
47.5
R14
47.5
R63 10KR63 10K
C49
100n
C49
100n
R3010KR3010K
C9
100p
C9
100p
1
2345
J1J1
R68 0
R68 0
R18 75R18 75
W3W3
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MAX2769 Evaluation Kit
Figure 2. MAX2769 EV Kit PCB Layout—Top Layer Metal
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MAX2769 Evaluation Kit
Figure 3. MAX2769 EV Kit PCB Layout—Top Silkscreen
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MAX2769 Evaluation Kit
Figure 4. MAX2769 EV Kit PCB Layout—Bottom Layer Metal
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MAX2769 Evaluation Kit
Figure 5. MAX2769 EV Kit PCB Layout—Bottom Silkscreen
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2017 Maxim Integrated Products, Inc.
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MAX2769 Evaluation Kit
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 3/17 Initial release —
Revision History
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Mouser Electronics
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Maxim Integrated:
MAX2769EVKIT+