Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage
g
20V
500 mW
Power Dissipation (Note 1)
Differential Input Voltage (Notes 2 and 3)
g
15V
g
15V
Input Voltage (Note 3)
Operating Temperature Range
LM221, LM121A (-883), LM121 (-883)
LM321, LM321A
b
25
§
C to
a
85
§
C
0
§
C to
a
70
§
C
b
65
§
C to
a
150
§
C
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
260
§
C
ESD rating to be determined.
Electrical Characteristics
(Note 4) LM221, LM321
Parameter
Conditions
LM221
LM321
Units
Min
Typ
Max
Min
Typ
Max
Input Offset Voltage
T
A
e
25
§
C, 6.4k
s
R
SET
s
70k
T
A
e
25
§
C,
R
SET
e
70k
R
SET
e
6.4k
T
A
e
25
§
C,
R
SET
e
70k
R
SET
e
6.4k
T
A
e
25
§
C,
R
SET
e
70k
R
SET
e
6.4k
T
A
e
25
§
C, R
SET
e
70k
0.7
1.5
mV
Input Offset Current
1
2
nA
nA
10
20
Input Bias Current
10
100
18
180
nA
nA
Input Resistance
4
2
M
X
M
X
0.4
0.2
Supply Current
1.5
2.2
mA
Input Offset Voltage
6.4k
s
R
SET
s
70k
1.0
2.5
mV
Input Bias Current
R
SET
e
70k
R
SET
e
6.4k
30
300
28
280
nA
nA
Input Offset Current
R
SET
e
70k
R
SET
e
6.4k
3
4
nA
nA
30
40
Input Offset Current Drift
R
SET
e
70k
3
3
pA/
§
C
Average Temperature
Coefficient of Input
Offset Voltage
R
S
s
200
X
, 6.4k
s
R
SET
s
70k
Offset Voltage Nulled
1
1
m
V/
§
C
Long Term Stability
5
5
m
V/yr
Supply Current
2.5
3.5
mA
Input Voltage Range
V
S
e
g
15V, (Note 5)
R
SET
e
70k
R
SET
e
6.4k
g
13
g
13
V
V
a
7,
b
13
a
7,
b
13
Common-Mode Rejection
Ratio
R
SET
e
70k
R
SET
e
6.4k
120
114
114
114
dB
dB
Supply Voltage Rejection
Ratio
R
SET
e
70k
R
SET
e
6.4k
T
A
e
25
§
C, R
SET
e
70k,
R
L
l
3 M
X
120
114
114
114
dB
dB
Voltage Gain
16
12
V/V
nV/
0
Hz
Noise
R
SET
e
70k, R
SOURCE
e
0
8
8
Note 1:
The maximum junction temperature of the LM221 is 100
§
C. The maximum junction temperature of the LM321 is 85
§
C. For operating at elevated
temperature, devices in the H08 package must be derated based on a thermal resistance of 150
§
C/W, junction to ambient, or 18
§
C/W, junction to case.
Note 2:
The inputs are shunted with back-to-back diodes in series with a 500
X
resistor for overvoltage protection. Therefore, excessive current will flow if a
differential input voltage in excess of 1V is applied between the inputs.
Note 3:
For supply voltages less than
g
15V, the absolute maximum input voltage is equal to the supply voltage.
Note 4:
These specifications apply for
g
5
s
V
S
s g
20V and
b
55
§
C
s
T
A
s
a
125
§
C, unless otherwise specified. With the LM221, however all temperature
specifications are limited to
b
25
§
C
s
T
A
s
a
85
§
C, and for the LM321 the specifications apply over a 0
§
C to
a
70
§
C temperature range.
Note 5:
External precision resistor D0.1%D can be placed from pins 1 and 8 to 7 increase positive common-mode range.
3