OP421

The OP421 quad low-power operational amplifier is a single-chip quad patterned after the OP-21 single operational amplifier. The features of OP421 are: (1)low supply current: 1mA max; (2)slew rate: 0.25V/s min; (3)single supply operation: +5V to +30V; (4)low input offset voltage: 500V typ; (5)low input offset voltage drift: 10V/ max; (6)high common-mode input range: V- to V+(-1.5V).

The following is about the absolute maximum ratings of OP421: (1)Supply Voltage: ±18 V; (2)Differential Input Voltage: ±30 V; (3)Input Voltage: Supply Voltage; (4)Output Short-Circuit Duration: Continuous; (5)Storage Temperature Range: -65 to 150 °C; (6)Operating Temperature Range: -55 to 125 °C.

The electrical characteristics of the OP421 are: (1)Input Offset Voltage: 0.5 mV typ and 2.5mV max at VS=±2.5V to ±15V; (2)Input Offset Current: 0.6nA typ and 5.0nA max at VS=±2.5V to ±15V; (3)Input Bias Current: 20nA to 50 nA at VS=±2.5V to ±15V; (4)Common Mode rejection ratio: 83dB min and 100dB typ; (5)Large Signal Voltage Gain: 200V/mV min and 400V/mV typ at VO = ±10V, RL = 10k.