LM108AH National Semiconductor, LM108AH Datasheet

LM108AH

Manufacturer Part Number
LM108AH
Description
Manufacturer
National Semiconductor
Type
General Purpose Amplifierr
Datasheet

Specifications of LM108AH

Rail/rail I/o Type
No
Number Of Elements
1
Slew Rate
0.3V/us
Common Mode Rejection Ratio
96dB
Input Offset Voltage
500uV
Input Bias Current
2nA
Single Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (typ)
±3/±5/±9/±12/±15/±18V
Power Dissipation
500mW
Voltage Gain In Db
109.54dB
Power Supply Rejection Ratio
96dB
Power Supply Requirement
Dual
Shut Down Feature
No
Single Supply Voltage (min)
Not RequiredV
Single Supply Voltage (max)
Not RequiredV
Dual Supply Voltage (min)
±2V
Dual Supply Voltage (max)
±20V
Technology
Bipolar
Operating Temp Range
-55C to 125C
Operating Temperature Classification
Military
Mounting
Through Hole
Pin Count
8
Package Type
TO-99
Lead Free Status / Rohs Status
Not Compliant

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C 1995 National Semiconductor Corporation
LM108A LM208A LM308A Operational Amplifiers
General Description
The LM108 LM108A series are precision operational ampli-
fiers having specifications about a factor of ten better than
FET amplifiers over their operating temperature range In
addition to low input currents these devices have extremely
low offset voltage making it possible to eliminate offset ad-
justments in most cases and obtain performance ap-
proaching chopper stabilized amplifiers
The devices operate with supply voltages from
g
ed 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 by-
pass capacitors unnecessary
The low current error of the LM108A series makes possible
many designs that are not practical with conventional ampli-
fiers In fact it operates from 10 M
Compensation Circuits
18V and have sufficient supply rejection to use unregulat-
Bandwidth and slew rate are proportional to 1 C
Standard Compensation Circuit
TL H 7759
source resistances
Feedforward Compensation
C
C
f
f t
O
TL H 7759– 1
e
g
R1
R1 C
30 pF
2V to
a
R2
O
Bandwidth and slew rate are proportional to 1 C
introducing less error than devices like the 709 with 10 k
sources Integrators with drifts less than 500
analog time delays in excess of one hour can be made us-
ing capacitors no larger than 1 F
The LM208A is identical to the LM108A except that the
LM208A has its performance guaranteed over a
The LM308A devices have slightly-relaxed specifications
and performances over a 0 C to
Features
Y
Y
Y
Y
Y
a
Improves rejection of power supply
noise by a factor of ten
85 C temperature range instead of
Offset voltage guaranteed less than 0 5 mV
Maximum input bias current of 3 0 nA over temperature
Offset current less than 400 pA over temperature
Supply current of only 300 A even in saturation
Guaranteed 5 V C drift
Alternate Frequency Compensation
TL H 7759 – 3
a
70 C temperature range
s
b
RRD-B30M115 Printed in U S A
55 C to
V sec and
TL H 7759 – 2
May 1989
b
a
25 C to
125 C

Related parts for LM108AH

LM108AH Summary of contents

Page 1

... Compensation Circuits Standard Compensation Circuit Bandwidth and slew rate are proportional 1995 National Semiconductor Corporation TL H 7759 introducing less error than devices like the 709 with 10 k sources Integrators with drifts less than 500 analog time delays in excess of one hour can be made us- ...

Page 2

... specifications are limited Note 5 Refer to RETS108AX for LM108AH and LM108AJ-8 military specifications Note 6 Human body model series with 100 pF Storage Temperature Range Lead Temperature (Soldering 10 sec ) (DIP) Soldering Information Dual-In-Line Package 20V g Soldering (10 sec ) 500 mW Small Outline Package Vapor Phase (60 sec ) ...

Page 3

... LM308A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Power Dissipation (Note 1) Differential Input Current (Note 2) Input Voltage (Note 3) Output Short-Circuit Duration Operating Temperature Range Storage Temperature Range ...

Page 4

Typical Applications Teflon polyethylene or polycarbonate dielectric capacitor Worst case drift less than sec High Speed Amplifier with Low Drift and Low Input Current Sample and Hold 7759 – 7759– 5 ...

Page 5

Application Hints A very low drift amplifier poses some uncommon application and testing problems Many sources of error can cause the apparent circuit drift to be much higher than would be pre- dicted Thermocouple effects caused by temperature gradient across ...

Page 6

... Unused pin (no internal connection) to allow for input anti-leakage guard ring on printed circuit board layout Order Number LM108AH LM208AH or LM208AH See NS Package Number H08C Physical Dimensions inches (millimeters) Order Number LM108AH LM208AH or LM308AH Dual-In-Line Package TL H 7759– 7 Top View Order Number LM108AJ-8 LM208AJ-8 LM308AJ-8 LM308AM or LM308AN ...

Page 7

Physical Dimensions inches (millimeters) (Continued) Order Number LM108AJ-8 LM208AJ-8 or LM308AJ-8 Ceramic Dual-In-Line Package (J) NS Package Number J08A S O Package (M) Order Number LM308AM NS Package Number M08A 7 ...

Page 8

... Hong Kong Ltd 49) 0-180-530 85 86 13th Floor Straight Block a Ocean Centre 5 Canton Rd 49) 0-180-530 85 85 Tsimshatsui Kowloon a Tel ( 49) 0-180-532 78 32 Hong Kong a 49) 0-180-532 93 58 Tel (852) 2737-1600 a Tel ( 49) 0-180-534 16 80 Fax (852) 2736-9960 a National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 ...

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