MAX478 Datasheet

• 17µA Max Supply Current (MAX478A)
• 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)
• 0.5µV/°C Offset-Voltage Drift
• Output Sources and Sinks 5mA Load Current

• 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

The MAX478 are dual 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 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.