LM308H National Semiconductor, LM308H Datasheet

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LM308H

Manufacturer Part Number
LM308H
Description
Operational Amplifier
Manufacturer
National Semiconductor
Datasheet

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C 1995 National Semiconductor Corporation
LM108 LM208 LM308 Operational Amplifiers
General Description
The LM108 series are precision operational amplifiers hav-
ing specifications a factor of ten better than FET amplifiers
over a
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 LM108 series makes possible
many designs that are not practical with conventional ampli-
fiers In fact it operates from 10 M
Compensation Circuits
Bandwidth and slew rate are proportional to 1 C
20V and have sufficient supply rejection to use unregulat-
b
55 C to
Standard Compensation Circuit
a
125 C temperature range
TL H 7758
C
C
source resistances
f t
O
f
e
R1
30 pF
R1 C
a
Feedforward Compensation
O
R2
TL H 7758– 1
g
2V to
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 LM108 is guaranteed from
LM208 from
Features
Y
Y
Y
Y
a
Bandwidth and slew rate are proportional to 1 C
Improves rejection of power supply noise by a factor of ten
70 C
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 drift characteristics
Alternate Frequency Compensation
b
25 C to
a
85 C and the LM308 from 0 C to
TL H 7758 – 3
b
55 C to
RRD-B30M115 Printed in U S A
s
December 1994
a
125 C the
V sec and
TL H 7758 – 2

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LM308H Summary of contents

Page 1

... C O Bandwidth and slew rate are proportional 1995 National Semiconductor Corporation TL H 7758 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

... 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 Temperature Range (LM108) ...

Page 3

Electrical Characteristics (Note 4) (Continued) Parameter Condition Input Voltage Range V 15V Common Mode Rejection Ratio Supply Voltage Rejection Ratio Note 1 The maximum junction temperature of the LM108 is 150 C for the LM208 100 C ...

Page 4

Typical Performance Characteristics Input Currents Input Noise Voltage Voltage Gain Open Loop Frequency Response LM108 LM208 Offset Error Drift Error Closed Loop Power Supply Rejection Output Impedance Output Swing Supply Current Large Signal Voltage Follower Frequency Response Pulse Response 4 ...

Page 5

Typical Performance Characteristics Input Currents Input Noise Voltage Voltage Gain Open Loop Frequency Response LM308 Offset Error Drift Error Closed Loop Power Supply Rejection Output Impedance Output Swing Supply Current Large Signal Voltage Follower Frequency Response Pulse Response 5 TL ...

Page 6

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 7758 – 7758 – ...

Page 7

... Package is connected to Pin Unused pin (no internal connection) to allow for input anti-leakage guard ring on printed circuit board layout Order Number LM108H LM108H 883 LM308AH or LM308H See NS Package Number H08C Top View Order Number LM108J 883 See NS Package Number J14A Fast Summing Amplifier Dual-In-Line Package TL H 7758– ...

Page 8

Physical Dimensions inches (millimeters) Ceramic Dual-In-Line Package (J) Order Number LM108J 883 NS Package Number J08A Ceramic Dual-In-Line Package (J) Order Number LM108 883 NS Package Number J14A 8 ...

Page 9

... Physical Dimensions inches (millimeters) (Continued) Order Number LM108H LM108H 883 or LM308H Metal Can Package (H) NS Package Number H08C S O Package (M) Order Number LM308M NS Package Number M08A 9 ...

Page 10

... 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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