PROGRAMMABLE OPERATIONAL AMPLIFIER
Description
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MC1776C Micropower Programmable Operational Amplifier
This extremely versatile operational amplifier features low power consumption and high input impedance.
In addition, the quiescent currents within the device may be programmed by the choice of an external resistor value or current source applied to the Iset input.
This allows the amplifier’s characteristics to be optimized for input current and power consumption despite wide variations in operating power supply voltages.
• ±1.
2 V to ±18 V Operation
PROGRAMMABLE OPERATIONAL AMPLIFIER
SEMICONDUCTOR TECHNICAL DATA
• • • • •
Wide Programming Range Offset Null Capability No Frequency Compensation Required Low Input Bias Currents Short Circuit Protection
8 1
Resistive Programming
(See Figure 1)
P1 SUFFIX PLASTIC PACKAGE CASE 626
Rset to Ground
7 VCC – + 4 VEE 8 Rset Iset = 6 3
Rset to Negative Supply
(Recommended for supply voltage less than ± 6.
0 V)
8 1
2 3
2
7 VCC – + 4 8 Rset VEE Iset = VCC – 0.
6 – VEE Rset
Iset = 15 µA 160 kΩ 360 kΩ 750 kΩ 2.
0 MΩ
6
D SUFFIX PLASTIC PACKAGE CASE 751 (SO–8)
VCC – 0.
6 Rset
Typical Rset Values VCC, VEE ± 6.
0 V ± 10 V ± 12 V ± 15 V Iset = 1.
5 µA 3.
6 MΩ 6.
2 MΩ 7.
5 MΩ 10 MΩ Iset = 15 µA 360 kΩ 620 kΩ 750 kΩ 1.
0 MΩ ± 1.
5 V ± 3.
0 V ± 6.
0 V ± 15 V
Typical Rset Values VCC, VEE Iset = 1.
5 µA 1.
6 MΩ 3.
6 MΩ 7.
5 MΩ 20 MΩ
PIN CONNECTIONS
Offset Null Input Invert Noninvert VEE
1 2 3 4
8
–
+
7 6 5
Iset VCC Output Offset Null
Active Programming FET Current Source
7 – + 8 VG VEE VCC 6 4 VEE
Bipolar Current Source
2 3 7 – + 8 4 6 VEE Q VB R VEE Device MC1776CD MC1776CP1
(Top View)
2 3
ORDERING INFORMATION
Operating Temperature Range TA = 0° to +70°C Package SO–8 Plastic DIP
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Pins not shown are not connected.
© Motorola, Inc.
1996
Rev 5
MOTOROLA ANALOG IC DEVICE DATA
1
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MC1776C
MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.
)
Rating Power Supply Voltages Differential Input ...
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