LH0042C [NSC]
Low Cost FET Op Amp; 低成本FET运算放大器
| 型号： | LH0042C |
| 厂家： | 
National Semiconductor |
| 描述： | Low Cost FET Op Amp |
| 文件： | 总12页 (文件大小：206K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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 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.
b
The LH0042 is specified for operation over the 55 C to
125 C military temperature range. The LH0042C is speci-
§
a
§
b
a
fied for operation over the 25 C to 85 C temperature
Features
Y
§
§
range.
High open loop gainÐ100 dB typ
Y
Internal compensation
Y
Pin compatible with standard IC op amps
(TO-99 package)
Connection Diagram
Metal Can Package
TL/K/5557–3
Top View
Order Number LH0042H-MIL, LH0042H or LH0042CH
See NS Package Number H08D
C
1995 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.
Short Circuit Duration
Continuous
Operating Temperature Range
LH0022, LH0042, LH0052
LH0022C, LH0042C, LH0052C
b
a
55 C to 125 C
§
§
25 C to 85 C
b a
g
Supply Voltage
22V
§
65 C to 150 C
§
§
b
a
Power Dissipation (see Graph)
Input Voltage (Note 1)
500 mW
Storage Temperature Range
§
g
g
15V
30V
Lead Temperature (Soldering, 10 sec.)
300 C
§
Differential Input Voltage (Note 2)
Voltage Between Offset Null and Vb
g
0.5V
e
DC Electrical Characteristics for LH0022/LH0022C (Note 3) T
T (Max)
J
A
Limits
Parameter
Conditions
LH0022
Typ
LH0022C
Typ
Units
Min
Max
4.0
Min
Max
6.0
s
e
e
e
Input Offset Voltage
R
100 kX, T
25 C
§
S
A
2.0
3.5
mV
mV
g
V
15V
S
s
s
g
R
R
100 kX, V
15V
5.0
7.0
S
S
Temperature Coefficient of
Input Offset Voltage
100 kX
S
10
15
mV/ C
§
Offset Voltage Drift with Time
Input Offset Current
3
4
mV/week
pA
e
e
T
25 C (Note 4)
§
0.2
2.0
2.0
1.0
5.0
0.5
A
nA
Temperature Coefficient of
Input Offset Current
Doubles Every 10 C
§
Doubles Every 10 C
§
Offset Current Drift with Time
Input Bias Current
0.1
0.1
pA/week
pA
T
A
25 C (Note 4)
§
5
10
10
10
25
2.5
nA
Temperature Coefficient of
Input Bias Current
Doubles Every 10 C
§
Doubles Every 10 C
§
12
12
Differential Input Resistance
Common Mode Input Resistance
Input Capacitance
10
10
X
X
12
10
12
10
4.0
4.0
pF
V
e
s
s
g
g
g
g
g
Input Voltage Range
V
15V
12
13.5
12
13.5
S
e
IN
g
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Large Signal Voltage Gain
R
R
10 kX, V
10V
74
90
70
90
dB
dB
S
S
L
s
s
g
g
15V
10 kX, 5V
V
74
75
90
70
75
90
S
e
e
e
g
g
15V
R
T
2 kX, V
10V
OUT
e
100
100
V/mV
V/mV
V
25 C, V
§
A
S
e
e
e
g
10V
R
2 kX, V
L
OUT
30
30
g
V
S
15V
e
e
e
Output Voltage Swing
R
1 kX, T
25 C
§
L
A
g
g
g
g
g
10
12.5
10
12
15
g
V
S
15V
e
e
g
g
g
g
g
R
V
2 kX, V
15V
10
10
10
10
V
L
S
e
e
25 C
g
g
Output Current Swing
Output Resistance
10V, T
15
mA
X
§
OUT
A
75
75
Output Short Circuit Current
Supply Current
25
25
mA
mA
mW
e
g
g
V
V
15V
15V
2.0
2.5
75
2.4
2.8
85
S
e
Power Consumption
S
2
DC Electrical Characteristics for LH0042/LH0042C (Note 3)
Limits
Parameter
Conditions
LH0042
Typ
LH0042C
Typ
Units
Min
Max
Min
Max
s
s
Input Offset Voltage
R
R
100 kX
5.0
20
6.0
20
mV
S
Temperature Coefficient of
Input Offset Voltage
100 kX
S
10
15
mV/ C
§
Offset Voltage Drift with Time
Input Offset Current
7.0
1.0
10
10
2.0
15
mV/week
pA
e
e
T
25 C (Note 4)
§
25 C (Note 4)
5.0
25
10
50
A
Input Bias Current
T
A
pA
§
Temperature Coefficient of
Input Bias Current
Doubles Every 10 C
§
Doubles Every 10 C
§
12
12
Differential Input Resistance
Common Mode Input Resistance
Input Capacitance
10
10
X
X
12
10
12
10
4.0
4.0
pF
V
g
g
g
g
Input Voltage Range
12
13.5
86
12
13.5
80
s
s
e
g
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Large Signal Voltage Gain
R
R
10 kX, V
IN
10V
70
70
dB
dB
S
S
S
s
s
g
g
15V
10 kX, 5V
V
70
50
30
86
70
25
25
86
S
s
e
e
g
10V,
R
T
2 kX, V
OUT
100
100
V/mV
25 C
§
A
s
e
e
e
g
R
2 kX, V
1 kX, T
2 kX
10V
V/mV
V
S
L
L
OUT
e
g
g
g
g
g
Output Voltage Swing
R
R
25 C
§
10
10
10
12.5
10
10
10
12
15
A
g
g
g
g
V
e
g
g
Output Current Swing
Output Resistance
V
10V
15
mA
X
OUT
75
75
Output Short Circuit Current
Supply Current
20
20
mA
mA
mW
e
g
g
V
V
15V
15V
2.5
3.5
2.8
4.0
S
e
Power Consumption
105
120
S
3
DC Electrical Characteristics for LH0052/LH0052C (Note 3) (Continued)
Limits
Parameter
Conditions
LH0052
Typ
LH0052C
Typ
Units
Min
Max
Min
Max
5.0
e
Input Bias Current
T
A
25 C (Note 4)
§
0.5
2.5
2.5
1.0
pA
nA
0.5
Temperature Coefficient of
Input Bias Current
Doubles Every 10 C
§
Doubles Every 10 C
§
12
12
Differential Input Resistance
Common Mode Input Resistance
Input Capacitance
10
10
X
X
12
10
12
10
4.0
4.0
pF
V
e
s
s
g
g
g
g
g
Input Voltage Range
V
15V
12
13.5
90
12
13.5
90
S
e
g
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Large Signal Voltage Gain
R
R
10 kX, V
IN
10V
74
70
dB
dB
S
S
L
s
s
g
g
15V
10 kX, 5V
V
74
75
90
70
75
90
S
e
e
e
g
e
R
V
2 kX, V
OUT
10V
100
100
V/mV
V/mV
V
g
15V, T
25 C
§
S
A
e
e
e
g
R
2 kX, V
10V
L
OUT
30
30
g
V
15V
S
e
e
e
Output Voltage Swing
R
1 kX, T
25 C
§
L
A
g
g
g
g
g
10
12.5
10
12
15
g
V
S
15V
e
e
g
g
g
g
g
R
V
2 kX, V
15V
10
10
10
10
V
L
S
e
e
25 C
g
g
Output Current Swing
Output Resistance
10V, T
15
mA
X
§
OUT
A
75
75
Output Short Circuit Current
Supply Current
25
25
mA
mA
mW
e
g
g
V
V
15V
15V
3.0
3.5
3.0
3.8
S
e
Power Consumption
105
114
S
e
e
g
AC Electrical Characteristics for all amplifiers (T
25 C, V
§
15V)
A
S
Limits
Parameter
Conditions
LH0022/42/52
LH0022C/42C/52C
Units
Min
Typ
3.0
40
Max
Min
1.0
Typ
3.0
40
Max
Slew Rate
Voltage Follower
Voltage Follower
1.5
V/ms
kHz
MHz
ms
Large Signal Bandwidth
Small Signal Bandwidth
Rise Time
1.0
0.3
10
1.0
0.3
15
1.5
30
1.5
40
Overshoot
%
e
Settling Time (0.1%)
Overload Recovery
DV
10V
4.5
4.0
4.5
4.0
ms
IN
ms
4
e
e
g
AC Electrical Characteristics for all amplifiers (T
25 C, V
§
15V) (Continued)
A
S
Limits
Parameter
Conditions
LH0042
Typ
150
55
LH0042C
Typ
150
55
Units
Min
Max
Min
Max
e
e
e
e
e
Input Noise Voltage
R
S
R
S
R
S
R
S
10 kX, f
10 Hz
100 Hz
1 kHz
nV/
S
S
S
S
Hz
o
o
o
o
e
e
e
10 kX, f
10 kX, f
10 kX, f
nV/
nV/
nV/
Hz
Hz
Hz
35
35
10 kHz
30
30
e
e
10 kX
BW
10 Hz to 10kHz, R
12
12
mVrms
S
g
Note 1: For supply voltages less than 15V, the absolute maximum input voltage is equal to the supply voltage.
g
Note 2: Rating applies for minimum source resistance of 10 kX, for source resistances less than 10 kX, maximum differential input voltage is 5V.
s
s
s
s
s
s
a
T
A
b
a
b
125 C for the LH0042 and 25 C
g
Note 3: Unless otherwise specified, these specifications apply for 5V
g
20V and 55 C
V
T
A
85 C
§
§
§
§
S
e
for the LH0042C. Typical values are given for T
25 C.
§
Note 4: Input currents are a strong function of temperature. Due to high speed testing they are specified at a junction temperature T
A
e
25 C. Self heating will
§
j
cause an increase in current in manual tests. 25 C spec is guaranteed by testing at 125 C.
§
§
Note 5: See RETS0042X for the LH0042H military specifications.
Auxiliary Circuits (Shown for TO-99 pin out)
g
Protecting Inputs from 150V Transients
Offset Null
TL/K/5557–5
TL/K/5557–6
g
Boosting Output Drive to 100 mA
TL/K/5557–7
5
Schematic Diagram
6
Typical Applications
Precision Voltage Comparator
TL/K/5557–9
Subtractor for Automatic Test Gear
TL/K/5557–11
e
c
10 (e
b
e
IN1 IN2
e
)
OUT
Sensitive Low Cost ‘‘VTVM’’
TL/K/5777–12
7
Typical Applications (Continued)
Ultra Low Level Current Source
TL/K/5777–13
Sample and Hold
*Polystyrene dielectric.
TL/K/5557–16
Re-Zeroing Amplifier
C1Ð0.01 mF polystyrene.
TL/K/5557–17
8
Typical Performance Characteristics
Input Offset Current
vs Temperature
Input Bias Current vs
Temperature
Maximum Power Dissipation
TL/K/5557–18
*Noise voltage includes contribution from source resistance.
9
Typical Performance Characteristics (Continued)
Supply Voltage vs
Supply Current
Output Swing vs
Supply Voltage
Voltage Gain
s
TL/K/5557–19
10
11
Physical Dimensions inches (millimeters)
Metal Can Package (H)
Order Number H0042H-MIL, LH0042H or LH0042CH
NS Package Number H08D
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