36V, Low-Noise, Precision, Single/Quad/Dual Op Amps

The MAX44241/MAX44243/MAX44246 are 36V, ultra- precision, low-noise, low-drift, single/quad/dual opera- tional amplifiers that offer near-zero DC offset and drift through the use of patented chopper stabilized and auto-zeroing techniques. This method constantly mea- sures and compensates the input offset, eliminating drift over time and temperature and the effect of 1/f noise. These single/quad/dual devices feature rail-to-rail out- puts, operate from a single 2.7V to 36V supply or dual ±1.35V to ±18V supplies, and consume only 0.42mA per channel, with only 9nV/√Hz input-referred voltage noise.

The ICs are available in 8-pin µMAX® or SO packages and are rated over the -40°C to +125°C temperature range.

Applications

* Battery-Powered Equipment

* Load Cell Amplifiers

* PLC Analog I/O Modules

* Precision Instrumentation

* Transducer Amplifiers

* Reduces Noise-Sensitive Precision Applications

* Low 9nV/√Hz Noise at 1kHz

* Integrated EMI Filter

* Eliminates Cost of Calibration with Increased Accuracy and Patented Auto-Zero Circuitry

* Ultra-Low Input VOS: 5µV (max)

* Low 20nV/°C (max) of Offset Drift

* Suitable for High-Bandwidth Applications

* 1µs Fast Settling Time

* 5MHz Gain-Bandwidth Product

* Low 0.55mA Per Channel (max) Quiescent Current

* Wide Supply for High-Voltage Front-Ends

* 2.7V to 36V Supply Range

* Rail-to-Rail Output