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National Semiconductor |
February 1995
LH0042
Low Cost FET Op Amp
General Description
The LH0042 is a FET input operational amplifier with very
high input impedance and low input currents with no com-
promise in noise common mode rejection ratio open loop
gain or slew rate The LH0042 is internally compensated
and is free of latch-up
The LH0042 is specified for operation over the b55 C to
a125 C military temperature range The LH0042C is speci-
fied for operation over the b25 C to a85 C temperature
range
The LH0042 op amp is intended to fulfill a wide variety of
applications for process control medical instrumentation
and other systems requiring very low input currents The
LH0042 provides low cost high performance for such appli-
cations as electrometer and photocell amplification pico-
ammeters and high input impedance buffers
Features
Y High open loop gain 100 dB typ
Y Internal compensation
Y Pin compatible with standard IC op amps
(TO-99 package)
Connection Diagram
Metal Can Package
Top View
TL K 5557 – 3
Order Number LH0042H-MIL LH0042H or LH0042CH
See NS Package Number H08D
C1995 National Semiconductor Corporation TL K 5557
RRD-B30M115 Printed in U S A
Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
g22V
Power Dissipation (see Graph)
500 mW
Input Voltage (Note 1)
g15V
Differential Input Voltage (Note 2)
g30V
Voltage Between Offset Null and Vb
g0 5V
Short Circuit Duration
Operating Temperature Range
LH0022 LH0042 LH0052
LH0022C LH0042C LH0052C
Storage Temperature Range
Lead Temperature (Soldering 10 sec )
Continuous
b55 C to a125 C
b25 C to a85 C
b65 C to a150 C
300 C
DC Electrical Characteristics for LH0022 LH0022C (Note 3) TA e TJ(Max)
Limits
Parameter
Conditions
LH0022
LH0022C
Units
Min Typ Max Min Typ Max
Input Offset Voltage
Temperature Coefficient of
Input Offset Voltage
RS s 100 kX TA e 25 C
VS e g15V
RS s 100 kX VS e g15V
RS s 100 kX
20 40
50
10
35 60
mV
7 0 mV
15 mV C
Offset Voltage Drift with Time
3 4 mV week
Input Offset Current
TA e 25 C (Note 4)
02 20
20
10 50
05
pA
nA
Temperature Coefficient of
Input Offset Current
Doubles Every 10 C Doubles Every 10 C
Offset Current Drift with Time
0 1 0 1 pA week
Input Bias Current
TA e 25 C (Note 4)
5 10
10
10 25
25
pA
nA
Temperature Coefficient of
Input Bias Current
Differential Input Resistance
Doubles Every 10 C
1012
Doubles Every 10 C
1012
X
Common Mode Input Resistance
1012
1012
X
Input Capacitance
4 0 4 0 pF
Input Voltage Range
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Large Signal Voltage Gain
Output Voltage Swing
Output Current Swing
Output Resistance
VS e g15V
RS s 10 kX VIN e g10V
RS s 10 kX g5V s VS s g15V
RL e 2 kX VOUT e g10V
TA e 25 C VS e g15V
RL e 2 kX VOUT e g10V
VS e g15V
RL e 1 kX TA e 25 C
VS e g15V
RL e 2 kX VS e g15V
VOUT e g10V TA e 25 C
g12
74
74
75
30
g10
g10
g10
g13 5
90
90
100
g12 5
g15
75
g12
70
70
g13 5
90
90
75 100
30
g10 g12
g10
g10
g15
75
V
dB
dB
V mV
V mV
V
V
mA
X
Output Short Circuit Current
25 25 mA
Supply Current
Power Consumption
VS e g15V
VS e g15V
20 25
75
24 28
85
mA
mW
2
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