NTE928 Integrated Circuit Low Power Dual Operational Amplifier Description: Utilizing the circuit designs perfected for recently introduced Quad Operational Amplifiers, the NTE928 dual operational amplifier features low power drain, a common mode input voltage range extending to ground/V , and Single Supply or Split Supply Operation. EE This amplifier has several distinct advantages over standard operational amplifier types in single sup- ply applications. It can operate at supply voltages as low as 3.0 Volts or as high as 32 Volts with quies- cent currents about onefifth of those associated with the NTE941 (on a per amplifier basis). The common mode input range includes the negative supply, thereby eliminating the necessity for exter- nal biasing power supply voltage. Features: Short Circuit Protected Outputs True Differential Input Stage Single Supply Operation: 3.0 to 32 Volts Low Input Bias Currents Internally compensated Common Mode Range Extends to Negative Supply Single and Split Supply Operation Maximum Ratings: Power Supply Voltages Single Supply, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32V CC Split Supplies, V V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V CC EE Input Differential Voltage Range (Note 1), V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32V IDR Input Common Mode Voltage Range (Note 2), V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 32V ICR Input Forward Current (V 0.3V, Note 3), I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA I IF Output Short Circuit Duration, t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous S Junction Temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to +150C J Operating Ambient Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +70C A Note 1. Split Power Supplies Note 2. For supply voltages less than 32V, the absolute maximum input voltage is equal to the supply voltage. Note 3. This input current will only exist when the voltage is negative at any of the input leads. Normal output states will reestablish when the input voltage returns to a voltage greater than 0.3V.Electrical Characteristics: (V = 5V, V = Gnd, T = +25C unless otherwise specified) CC EE A Parameter Symbol Test Conditions Min Typ Max Unit 2.0 7.0 mV Input Offset Voltage V V = 5V to 30V, IO CC V =0 to V 1.7V, IC CC 0 T +70C 9.0 mV A V 1.4V, R = 0 O S Average Temperature Coefficient V / T 0 T +70C 7.0 V/C IO A of Input Offset Voltage Input Offset Current I 5.0 50 nA IO 0 T +70C 150 nA A Average Temperature Coefficient I / T 0 T +70C 10 pA/C IO A of Input Offset Current Input Bias Current I 45 250 nA IB 0 T +70C 50 500 nA A 0 28.3 V Input CommonMode Voltage V V = 30V, Note 4 ICR CC Range 0 T +70C 0 28 V A Differential Input Voltage Range V V V IDR CC 25 100 V/mV Large Signal OpenLoop A R = 2k , V = 15V, VOL L CC Voltage Gain For Large V Swing O 0 T +70C 15 V/mV A Channel Separation 1kHz f 20kHz, Input Referenced 120 dB CommonMode Rejection Ratio CMRR R 10k 65 70 dB S Power Supply Rejection Ratio PSRR 65 100 dB Output Voltage Range V R = 2k 0 3.3 V OR L Output Voltage High Limit V V = 30V, R = 2k 26 V L OH CC 0 T +70C A R = 10k 27 28 V L Output Voltage Low Limit V V = 5V, R = 10k , 0 T +70C 5 20 mV OL CC L A Output Source Current I V = +1V, V = 15V 20 40 mA O+ ID CC Output Sink Current I V = 1V, V = 15V 10 20 mA O ID CC V = 1V, V = 200mV 12 50 A ID O Output ShortCircuit to GND I Note 5 40 60 mA os V = 30V 1.5 3.0 mA Power Supply Current I V = 0, R = , CC CC O L 0 T +70C A V = 5V 0.7 1.2 mA CC Note 4. The input commonmode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the commonmode voltage range is V 1.7V, but either or both inputs can goto +32V without damage. CC Note 5. Short circuit from the output to V can cause excessive heating and eventual destruction. CC Destructive dissipation can result from simultaneous shorts on all amplifiers.