MAX44246

Description

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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.

Key Features

• 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 V_OS: 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

Applications/Uses

• Battery-Powered Equipment
• Load Cell Amplifiers
• PLC Analog I/O Modules
• Precision Instrumentation
• Transducer Amplifiers