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Details, datasheet, quote on part number:JM38510/10104BG
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Datasheet text preview:
LM108 LM208 LM308 Operational Amplifiers
December 1994
LM108 LM208 LM308 Operational Amplifiers
General Description
The LM108 series are precision operational amplifiers having specifications a factor of ten better than FET amplifiers o Tver a b55 C to a 125 C temperature range he devices operate with supply voltages from g 2V to g 20V and have sufficient supply rejection to use unregulated supplies Although the circuit is interchangeable with and uses the same compensation as the LM101A an alternate compensation scheme can be used to make it particularly insensitive to power supply noise and to make supply byT pass capacitors unnecessary he low current error of the LM108 series makes possible many designs that are not practical with conventional amplifiers In fact it operates from 10 MX source resistances ntroducing less error than devices like the 709 with 10 kX sources Integrators with drifts less than 500 mV sec and analog time delays in excess of one hour can be made usT ing capacitors no larger than 1 mF he LM108 is guaranteed from b55 C to a 125 C the LM208 from b25 C to a 85 C and the LM308 from 0 C to a F 70 C
eatures
Maximum input bias current of 3 0 nA over temperature Offset current less than 400 pA over temperature Y Supply current of only 300 mA even in saturation i Y Guaranteed drift characteristics
Y Y
Compensation Circuits
Standard Compensation Circuit Alternate Frequency Compensation
Cf t
R1 CO R1 a R2
CO e 30 pF
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Bandwidth and slew rate are proportional to 1 Cf
B Improves rejection of power supply noise by a factor of ten andwidth and slew rate are proportional to 1 Cs
Feedforward Compensation
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C1995 National Semiconductor Corporation
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RRD-B30M115 Printed in U S A
Absolute Maximum Ratings
D If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office ( istributors for availability and specifications Note 5) LM108 LM208 g 20V Supply Voltage Power Dissipation (Note 1) 500 mW g 10 mA Differential Input Current (Note 2) g 15V Input Voltage (Note 3) Output Short-Circuit Duration Continuous b 55 C to a 125 C Operating Temperature Range (LM108) b 25 C to a 85 C (LM208) b 65 C to a 150 C Storage Temperature Range Lead Temperature (Soldering 10 sec) DIP 260 C H Package Lead Temp (Soldering 10 seconds) 300 C Soldering Information Dual-In-Line Package Soldering (10 seconds) 260 C Small Outline Package Vapor Phase (60 seconds) 215 C Infrared (15 seconds) 220 C See AN-450 ``Surface Mounting Methods and Their Effect on Product E Reliability'' for other methods of soldering surface mount devices SD Tolerance (Note 6) 2000V LM308 g 18V 500 mW g 10 mA g 15V Continuous 0 C to a 70 C
b 65
C to a 150 C
260 C 300 C
Electrical Characteristics (Note 4)
Parameter Input Offset Voltage Input Offset Current Input Bias Current Input Resistance Supply Current Large Signal Voltage Gain Input Offset Voltage Average Temperature Coefficient of Input Offset Voltage Input Offset Current Average Temperature Coefficient of Input Offset Current Input Bias Current Supply Current Large Signal Voltage Gain Output Voltage Swing TA e a 125 C VS e g 15V VOUT e g 10V RL t 10 kX VS e g 15V RL e 10 kX 25
g 13 g 14
Condition Min TA e 25 C TA e 25 C TA e 25 C TA e 25 C TA e 25 C TA e 25 C VS e g 15V VOUT e g 10V RL t 10 kX 50 30
LM108 LM208 Typ 07 0 05 08 70 03 300 30 30 15 04 05 25 30 0 15 04 15
g 13
LM308 Max 20 02 20 10 06 25 Min Typ 20 02 15 40 03 300 10 60 30 15 20 10 10 08 Max 75 1 7
Units mV nA nA MX mA V mV mV mV C nA pA C nA mA V mV
g 14
V
2
Electrical Characteristics (Note 4) (Continued)
Parameter Input Voltage Range Common Mode Rejection Ratio Supply Voltage Rejection Ratio Condition Min VS e g 15V
g 13 5
LM108 LM208 Typ Max Min
g 14
LM308 Typ Max
Units V
85 80
100 96
80 80
100 96
dB dB
Note 1 The maximum junction temperature of the LM108 is 150 C for the LM208 100 C and for the LM308 85 C For operating at elevated temperatures devices in the H08 package must be derated based on a thermal resistance of 160 C W junction to ambient or 20 C W junction to case The thermal resistance of the Nual-in-line package is 100 C W junction to ambient d ote 2 The inputs are shunted with back-to-back diodes for overvoltage protection Therefore excessive current will flow if a differential input voltage in excess of N 1V is applied between the inputs unless some limiting resistance is used Note 3 For supply voltages less than g 15V the absolute maximum input voltage is equal to the supply voltage ote 4 These specifications apply for g 5V s VS s g 20V and b 55 C s TA s a 125 C unless otherwise specified With the LM208 however all temperature N specifications are limited to b 25 C s TA s 85 C and for the LM308 they are limited to 0 C s TA s 70 C Note 5 Refer to RETS108X for LM108 military specifications and RETs 108AX for LM108A military specifications S te 6 Human body model 1 5 kX in series with 100 pF o
chematic Diagram
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