Semiconductor Components Industries, LLC, 2001
July, 2001 – Rev. 1 1Publication Order Number:
CS59201/D
CS59201
Winchester Servo
Preamplifier with
Low Current Drain
The CS59201 is a low noise servo preamplifier for use with ferrite
heads. It is a differential input, differential output design with fixed
gain of approximately 100. Features include low noise, wide
bandwidth and low current drain.
Features
•50 MHz Bandwidth
•Operates From Any of Three Standard Supply Voltages:
–8.3 V (IBM Compatible)
–10 V
–12 V
•Available in SO–8 Package
OUT+
OUT–
IN+
IN–
VCC
VEE
Figure 1. Block Diagram
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PIN CONNECTION AND
MARKING DIAGRAM
SO–8
D SUFFIX
CASE 751
1
8
OUT+VEE
1
59201
ALYW
8
OUT–NC VCC
IN– NCIN+
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
Device Package Shipping
ORDERING INFORMATION
CS59201GD8 SO–8 95 Units/Rail
CS59201GDR8 SO–8 2500 Tape & Reel
CS59201
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2
MAXIMUM RATINGS*
Rating Value Unit
Power Supply Voltage (VCC – VEE) 14 V
Differential Input Voltage 5.0 V
Storage Temperature Range –65 to +150 °C
Operating Temperature Range 0 to 70 °C
Thermal Resistance, Junction–to–Case, RΘJC 45 °C/W
Thermal Resistance, Junction–to–Ambient, RΘJA 165 °C/W
ESD Susceptibility (Human Body Model) 1.4 kV
*The maximum package power dissipation must be observed.
ELECTRICAL CHARACTERISTICS (TA = 25°C, (VCC – VEE) = 7.0 V to 13.2 V; unless otherwise specified.)
Characteristic Test Conditions Min Typ Max Unit
General
Gain (Differential) – 80 100 120 V/V
Bandwidth (3.0 dB) VIN = 2.0 mV 30 50 – MHz
Input Resistance – 1040 1300 1560 Ω
Input Capacitance – – 20 30 pF
Input Dynamic Range – 3.0 – – mV
Power Supply Current (VCC – VEE) = 12 V – 20 25 mA
Output Offset (Differential) RS = 0, RL = 130 Ω– – 200 mV
Equivalent Input Noise BW = 4.0 MHz, Note 1. – 0.7 1.0 nV/Hz
PSRR, Input Referred RS = 0, f ≤ 5.0 MHz, Note 1. 55 60 – dB
Gain Sensitivity (Supply) (VCC – VEE) = ±10% – – ±0.5 %/V
Gain Sensitivity (Temp.) TA = 25°C to 70°C, RL = 130 Ω– –0.1 – %/°C
CMRR, Input Referred f ≤ 5.0 MHz 60 70 – dB
Recommended
Supply Voltage (VCC – VEE) – 7.45
9.0
10.8
8.3
10
12
9.15
11
13.2
V
V
V
Input Signal, VIN – – 2.0 – mVPP
Ambient Temperature, TA– 0 – 70 °C
1. 1.0 nV/root Hz and a bandwidth of 4.0 MHz equals 2.0 µVRMS.
CS59201
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3
PACKAGE PIN DESCRIPTION
Pin Number
SO–8 Pin Symbol Function
1 IN+ Positive input to preamplifier.
2 IN– Negative input to preamplifier.
3, 8 NC No connection.
4 VEE Negative supply voltage.
5 OUT+ One of the amplifier outputs.
6 OUT– One of the amplifier outputs.
7 VCC Positive supply voltage.
Figure 2. Applications Diagram
HEAD
RLRLCC
CC
REQ
REQ
VEE
VCC
Recommended Load Conditions
1. Input must be AC coupled.
2. CC’s are AC coupling capacitors.
3. RL’s are DC bias and termination resistors,
(recommended 130 Ω).
4. REQ represents equivalent load resistance.
5. For gain calculations RP = (RL × REQ)/(RL + REQ).
6. Differential gain = 0.72 RP (±18%)(RP in Ω).
7. Ceramic capacitors (0.1 µF) are recommended for
good power supply noise filtering.
CS59201
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4
PACKAGE DIMENSIONS
SO–8
D SUFFIX
CASE 751–07
ISSUE W
SEATING
PLANE
1
4
58
N
J
X 45
K
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER
SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN
EXCESS OF THE D DIMENSION AT MAXIMUM
MATERIAL CONDITION.
A
BS
D
H
C
0.10 (0.004)
DIM
A
MIN MAX MIN MAX
INCHES
4.80 5.00 0.189 0.197
MILLIMETERS
B3.80 4.00 0.150 0.157
C1.35 1.75 0.053 0.069
D0.33 0.51 0.013 0.020
G1.27 BSC 0.050 BSC
H0.10 0.25 0.004 0.010
J0.19 0.25 0.007 0.010
K0.40 1.27 0.016 0.050
M0 8 0 8
N0.25 0.50 0.010 0.020
S5.80 6.20 0.228 0.244
–X–
–Y–
G
M
Y
M
0.25 (0.010)
–Z–
Y
M
0.25 (0.010) Z SXS
M
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without further notice to any products herein. SCILLC makes no warranty , representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
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PUBLICATION ORDERING INFORMATION
JAPAN: ON Semiconductor, Japan Customer Focus Center
4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031
Phone: 81–3–5740–2700
Email: r14525@onsemi.com
ON Semiconductor Website: http://onsemi.com
For additional information, please contact your local
Sales Representative.
CS59201/D
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