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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 Voltage Common Mode Input Voltage VCC and |VEE| 15 V VCC and |VEE| 15 V Symbol VCC,VEE VID VICM VCC,VEE ±15 Voff–VEE Iset Vset tSC TA Tstg TJ ±0.5 500 (VCC –2.0 V) to VCC Indefinite 0 to +70 –65 to +150 150 Vdc µA Vdc sec °C °C °C Value ±18 ±30 Unit Vdc Vdc Vdc
t w
Offset Null to VEE Voltage Programming Current Programming Voltage (Voltage from Iset Terminal to Ground) Output Short Circuit Duration (Note 1) Operating Temperature Range Storage Temperature Range Junction Temperature
NOTE 1. May be to ground or either supply voltage. Rating applies up to a case temperature of +125°C or ambient temperature of +70°C and Iset ≤ 30 µA.
Representative Schematic Diagram
8 Iset 7 VCC
2 Inputs 3
–
50
+ 30 pF
2.0 k
100 100 100 6 Output
1 Offset Null 5 10 k 10 k
50
4
VEE
Voltage Offset Null Circuit
Transient Response Test Circuit
2 7 – + 4 8 Rset VEE Pins not shown are not connected. CL RL VCC 6 VO
2 3 8 Rset
– +
7 VCC 6 1 4 5 100 k VEE Vin
3
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2
MOTOROLA ANALOG IC DEVICE DATA
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MC1776C
ELECTRICAL CHARACTERISTICS (VCC = +3.0 V, VEE = –3.0 V, Iset = 1.5 µA, TA = +25°C, unless otherwise noted.*)
Characteristic Input Offset Voltage (RS ≤ 10 kΩ) TA = +25°C Tlow* ≤ TA ≤ Thigh* Offset Voltage Adjustment Range Input Offset Current TA = +25°C TA = Thigh TA = Tlow Input Bias Current TA = +25°C TA = Thigh TA = Tlow Input Resistance Input Capacitance Input Voltage Range Tlow ≤ TA ≤ Thigh Large Signal Voltage Gain RL ≥ 75 kΩ, VO = ±1.0 V, TA = +25°C RL ≥ 75 kΩ, VO = ±1.0 V, Tlow ≤ TA ≤ Thigh Output Voltage Swing RL ≥ 75 kΩ, Tlow ≤ TA ≤ Thigh Output Resistance Output Short Circuit Current Common Mode Rejection RS ≤ 10 kΩ, Tlow ≤ TA ≤ Thigh Supply Voltage Rejection Ratio RS ≤ 10 kΩ, Tlow ≤ TA ≤ Thigh Supply Current TA = +25°C Tlow ≤ TA ≤ Thigh Power Dissipation TA = +25°C Tlow ≤ TA ≤ Thigh Transient Response (Unity Gain) Vin = 20 mV, RL ≥ 5.0 kΩ, CL = 100 pF Rise Time Overshoot Slew Rate (RL ≥ 5.0 kΩ)
*Tlow = 0°C Thigh = +70°C
Symbol VIO
Min – –
Typ 2.0 – 9.0 0.7 – – 2.0 – – 50 2.0 – 200 k – ±2.4 5.0 3.0
Max 6.0 7.5 – 6.0 6.0 10
Unit mV
VIOR IIO
– – – –
mV nA
IIB – – – ri ci VID +1.0 AVOL 25 k 25 k VO ro ISC CMR 70 PSRR – ICC, IEE – – PD – – 78 – 120 150 13 – 20 25 25 200 86 – ±2.0 – – – – – – – 10 10 20 – –
nA
MΩ pF V V/V
V – – – kΩ mA dB µV/V µA
µW
tTLH os SR
– – –
3.0 0 0.03
– – –
µs % V/µs
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MOTOROLA ANALOG IC DEVICE DATA
3
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MC1776C
ELECTRICAL CHARACTERISTICS (VCC = +3.0 V, VEE = –3.0 V, Iset = 15 µA, TA = +25°C, unless otherwise noted.*)
Characteristic Input Offset Voltage (RS ≤ 10 kΩ) TA = +25°C Tlow* ≤ TA ≤ Thigh* Offset Voltage Adjustment Range Input Offset Current TA = +25°C TA = Thigh TA = Tlow Input Bias Current TA = +25°C TA = Thigh TA = Tlow Input Resistance Input Capacitance Input Voltage Range Tlow ≤ TA ≤ Thigh Large Signal Voltage Gain RL ≥ 5.0 kΩ, VO = ±1.0 V, TA = +25°C RL ≥ 5.0 kΩ, VO = ±1.0 V, Tlow ≤ TA ≤ Thigh Output Voltage Swing RL.