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NTE944 & NTE944M
Integrated Circuit
Programmable Operational Amplifier
Description:
The NTE944 (8–Lead Metal Can) and NTE944M (8–Lead MiniDIP) are extremely versatile program-
mable monolithic operational amplifiers. A single external master bias current setting resistor programs
the input bias current, input offset current, quiescent power consumption, slew rate, input noise, and the
gain–bandwidth product. These devices are truly general purpose operational amplifiers.
Features:
D ±1V to ±18V power supply operation
D 3nA input offset current
D Standby power consumption as low as 500mW
D No frequency compensation required
D Programmable electrical characteristics
D Offset voltage nulling capability
D Can be powered by two flashlight batteries
D Short circuit protection
Absolute Maximum Ratings:
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V
Power Dissipation (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30V
Input Voltage (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15V
ISET Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150µA
Output Short Circuit Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° ≤ TA +70°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Lead Temperature (Soldering, 10sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C
Note 1. The maximum junction temperature of the NTE944 is 100°C. For operating at elevated tem-
peratures, the NTE944 must be derated based on a thermal resistance of 150°C/W junction
to ambient, or 45°C/W junction to case. The thermal resistance of the NTE944M is +125°C/W.
Note 2. For supply voltages less than ±15V, the absolute maximum input voltage is equal to the supply
voltage.

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Electrical Characteristics: (0° ≤ TA +70°C, unless otherwise specified)
Parameter
Test Conditions
ISET = 1µA
Min Max
VOS
IOS
Ibias
Large Signal Voltage Gain
Supply Current
Power Consumption
Output Voltage Swing
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
VS = ±1.5V TA = +25°C, RS 100k
VS = ±15V
VS = ±1.5V RS 10k
VS = ±15V
VS = ±1.5V TA = +25°C
VS = ±15V
VS = ±1.5V
VS = ±15V
VS = ±1.5V TA = +25°C
VS = ±15V
VS = ±1.5V
VS = ±15V
VS = ±1.5V TA = +25°C, RL 100k
VO = ±0.6V, RL 10k
VS = ±15V TA = +25°C, RL 100k
VO = ±10V, RL 10k
VS = ±1.5V VO = ±0.5V, RL = 100k
RL = 10k
VS = ±15V VO = ±10V, RL = 100k
RL = 10k
VS = ±1.5V TA = +25°C
VS = ±15V
VS = ±1.5V
VS = ±15V
VS = ±1.5V TA = +25°C
VS = ±15V
VS = ±1.5V
VS = ±15V
VS = ±1.5V RL = 100k
RL = 10k
VS = ±15V RL = 100k
RL = 10k
VS = ±1.5V RS 10k
VS = ±15V
VS = ±1.5V RS 10k
VS = ±15V
25k
60k
25k
50k
±0.6
±12
70
70
74
74
5
5
6.5
6.5
6
6
8
8
10
10
10
10
8
11
8
11
24
330
24
330
ISET = 10µA
Min Max
6
6
7.5
7.5
20
20
25
25
75
75
80
80
––
25k
––
60k
––
25k
––
50k
90
100
90
100
270
3k
270
3k
––
±0.6
––
±12
70
70
74
74
Unit
mV
mV
mV
mV
nA
nA
nA
nA
nA
nA
nA
nA
µA
µA
µA
µA
µW
µW
µW
µW
V
V
V
V
dB
dB
dB
dB

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Resistor Biasing: (Set Current Setting Resistor to V)
VS
±1.5V
0.1µA
25.6M
ISET
0.5µA
5.04M
1.0µA
2.5M
±3.0V
55.6M
11.0M
5.5M
±6.0V
116.0M
23.0M
11.5M
±9.0V
176.0M
35.0M
17.5M
±12.0V
236.0M
47.0M
23.5M
±15.0V
296.0M
59.0M
29.5M
5µA
492.0k
1.09M
2.29M
3.49M
4.69M
5.89M
Pin Connection Diagram
NTE944
(Top View)
Offset Null
5
Output 6
4 V ()
10µA
244.0k
544.0k
1.14M
1.74M
2.34M
2.94M
V (+) 7
3 NonInverting Input
8
Quiescent Current Set
2
Inverting Input
1
Offset Null
Pin Connection Diagram
NTE944M
Offset Null 1
Inverting Input 2
NonInverting Input 3
V4
8 Quiescent Current Set
7 V+
6 Output
5 Offset Null

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Dimensional Drawing
NTE944
.177 (4.5)
Max
.370 (9.39) Dia Max
.335 (8.52) Dia Max
.492
(12.5)
Min
.018 (0.45) Dia Typ
23
14
5
8
45° 7 6
.200 (5.06)
Dia
.032 (0.82)
Dimensional Drawing
NTE944M
85
.260 (6.6)
14
.390 (9.9)
Max
.155
(3.93)
.300
(7.62)
.100 (2.54)
.300 (7.62)
.145 (3.68)