LM108AH/NOPB National Semiconductor, LM108AH/NOPB Datasheet

LM108AH/NOPB

Manufacturer Part Number

LM108AH/NOPB

Description

IC OP AMP PRECISION TO-99-8

Manufacturer

National Semiconductor

Datasheet

1.LM108AHNOPB.pdf (8 pages)

Specifications of LM108AH/NOPB

Amplifier Type

General Purpose

Number Of Circuits

Current - Input Bias

800pA

Voltage - Input Offset

300µV

Current - Supply

300µA

Voltage - Supply, Single/dual (±)

±2 V ~ 20 V

Operating Temperature

-55°C ~ 125°C

Mounting Type

Through Hole

Package / Case

TO-99-8, Metal Can

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Output Type

Current - Output / Channel

-3db Bandwidth

Slew Rate

Gain Bandwidth Product

Other names

*LM108AH
*LM108AH/NOPB
LM108AH

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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

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

f t

TL H 7759– 1

R1 C

30 pF

2V to

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

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

70 C temperature range

RRD-B30M115 Printed in U S A

55 C to

V sec and

TL H 7759 – 2

May 1989

25 C to

125 C

Related parts for LM108AH/NOPB

LM108AH/NOPB 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

... LM108A LM208A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications (Note 5) Supply Voltage Power Dissipation (Note 1) Differential Input Current (Note 2) Input Voltage (Note 3) Output Short-Circuit Duration Operating Free Air Temperature Range ...

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

Connection Diagrams Metal Can Package Pin 4 is connected to the case 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 ...

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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