NTE925 Integrated Circuit Instrumentation Operational Amplifier Description: The NTE925 is an operational amplifier in an 8 Lead Metal Can featuring superior performance in applications where low noise, low drift, and accurate closed loop gain are required. With high common mode rejection and offset null capability, this device is especially suited for low level instrumentation applications over a wide supply voltage range. Features High Open Loop Gain: 3,000,000 Low Input Voltage Drift: 0.6V/C High Common Mode Rejection: 120dB Low Input Noise Current: 0.15pA/Hz Low Input Offset Current: 2nA High Input Voltage Range: 14V Wide Power Supply Range: 3V to 22V Offset Null Capability Output Short Circuit Protection Absolute Maximum Ratings: Supply Voltage .................................................................... 22V Internal Power Dissipation ....................................................... 500mW Derate Above T = +75C ............................................... +150C/W A Differential Input Voltage ............................................................ 5V Input Voltage (Note 1) .............................................................. 22V Maximum Junction Temperature, T ............................................... +150C J Operating Temperature Range, T ............................................. 0 to +70C A Storage Temperature Range, T .......................................... 65 to +150C stg Lead Temperature (During soldering, 10 sec), T .................................... +260C L Note 1. For supply voltages less than 22V, the absolute maximum input voltage is equal to the supply voltage. Rev. 111Electrical Characteristics: (V = 15V, T = +25C, Note 1 unless otherwise specified) S A Parameter Test Conditions Min Typ Max Unit Input Offset Voltage R 10k 0.5 2.5 mV S Without External Trim T = 0 to +70C 3.5 mV A Average Input Offset Voltage Drift Without External Trim 2.0 V/C R = 50, T = 0 to +70C S A With External Trim 0.6 V/C 2.0 35 nA Input Offset Current T = +70C 1.2 35 nA A T = 0C 4.0 50 nA A Average Input Offset Current Drift T = 0 to +70C 10 pA/C A Input Bias Current 42 125 nA T = +70C 125 nA A T = 0C 250 nA A Input Noise Voltage f = 10Hz 15 nV/Hz o f = 100Hz 9 nV/Hz o f = 1kHz 8 nV/Hz o Input Noise Current f = 10Hz 1.0 pA/Hz o f = 100Hz 0.3 pA/Hz o f = 1kHz 0.15 pA/Hz o Input Resistance 15 M Input Voltage Range 13.5 14.0 V Large Signal Voltage Gain R 2k V = 10V 250 3000 V/mV L OUT T = +70C 125000 V/V A T = 0C 125000 V/V A Common Mode Rejection Ratio R 10k 94 120 dB S T = 0 to +70C 115 dB A Power Supply Rejection Ratio R 10k 2.0 35 V/V S T = 0 to +70C 20 V/V A Output Voltage Swing R 10k 12.0 13.5 V L R 2k 10.0 13.5 V L T = 0 to +70C 10.0 V A Power Consumption 80 150 mW Note 1. For supply voltages less than 22V, the absolute maximum input voltage is equal to the supply voltage.