MAXIM MAX422CJA

The MAx420,421,422,and 423 are a series of ±15ν CMOS chopper-stabilized amplifiers, designed for high accuracy amplification, signal conditioning and instrumentation applications. These devices offer input offset and drift specification superior to previous “precision” bipolar amplifiers and monolithic choppers. The maximum offset is 5.0 μv while the guaranteed drift limit is 0.05 μV/°C. The combination of ±15 volt operation, low power, and standard op-amp pin configuration allows these devices to virtually "plug-in" replace conventional lower-performance amplifiers. The only additional components required are two external capacitors. A wide input voltage range specification, that includes the negative supply, allows for the amplification of signals including ground in single-supply applications. The MAX420 (8 pin) and MAX421 (14 pin) have a maximum supply current of 2mA. The MAX422 (8 pin) and MAX 423 (14 pin) are low power amplifiers with a maximum current of 0.5mA.

• ±15V Supply Operation
• Input Voltage Range: +11V to -15V
• Low Input Noise: 0.3 μVp-p (DC - 1Hz)
• High Gain, CMRR, PSRR: 120dB
• Low Power CMOS Design: 0.5mA Max Supply Current (MAX422/423)
• Low Input Bias Current: 30pA Max

• Precision Amplifiers
• Signal Conditioning for: Thermocouples, Strain Gauges, Load Cells, Platinum Temperature Sensors, Thermistors, Bridges
• High Accuracy Data Acquisition
• D.C. Stabilization of Amplifiers and Systems