17µA Max, Dual Quad, Single-Supply, Precision Op Amps

The MAX478 and MAX479 are dual and quad micro-power, precision op amps available in 8-pin and 14-pin DIP and small-outline packages, respectively. Both devices feature an extremely low, 17µA max supply current per op amp, 70µV max offset voltage, 2.2µV/°C max offset voltage drift (0.5µV/°C typ), and 250pA max input offset current.

The MAX478 and MAX479 operate from a single supply. The input voltage range includes ground, and the output swings to within a few millivolts of ground, which eliminates pull-down resistors and saves power.

Both devices are optimized for single 3V and 5V supply operation, with guaranteed specifications at each supply voltage. Specifications for ±15V operation are also provided.

Applications

* Battery- or Solar-Powered Portable Instrumentation Systems * Battery- or Solar-Powered Remote Sensor Amplifier Systems * Battery- or Solar-Powered Satellite Circuitry Systems * Micropower Filters * Micropower Sample-and-Hold * Single-Cell Li+ Powered Systems * Thermocouple Amplifiers

* 17µA Max Supply Current (MAX478A/MAX479A)

* 70µV Max Offset Voltage (MAX478A)

* Single-Supply Operation: * Input Voltage Range Includes Ground

* Output Swings to Ground While Sinking Current

* No Pull-Down Resistors Required

* Dual Op Amp in 8-Pin DIP/SO Package (MAX478)

* Quad Op Amp in 14-Pin DIP/SO Package (MAX479)

* 250pA Max Input Offset Current (MAX478A/MAX479A)

* 0.5µV/°C Offset-Voltage Drift

* Output Sources and Sinks 5mA Load Current