MAX44291

36V, Single/Dual/Quad, Low-Noise Amplifiers with Maximum 0.5μV/°C Offset Drift

Lowest Offset Drift in its Class, Offers Unmatched ±8kV ESD Protection and Latch-Up Immunity

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Overview

Low Input Noise and High Bandwidth to Drive Precision ADCs
- 4.9nV/ Low Input Noise
- 10MHz Gain-Bandwidth Product
Low Input Offset Ensures Accurate Results Over Temperature
- 125µV (max) Low Input Offset Voltage
- 0.5µV/°C (max) Offset Drift
Low 1.2mA Quiescent Current (Per Channel) Does Not Break the Power Budget
ESD Protection Provides Robust Front-End
- ±8kV Human Body Model
- ±1kV Charged Device Model
Wide Supply for High-Voltage Front-Ends
- Single 4.5V to 36V or Dual ±2.25V to ±18V Supply Ranges
8-Pin µMAX and 8-/14-Pin SO Packages Save Board Space

The MAX44291/MAX44292/MAX44294 are single/dual/quad low-noise, precision operational amplifiers. The low offset and low noise specifications and high supply range make the MAX44291/MAX44292/MAX44294 ideal for sensor interfaces, loop-powered systems, and various types of medical and data acquisition instruments.

The MAX44291/MAX44292/MAX44294 operate with a wide supply voltage range from a 4.5V to 36V single supply or dual ±2.25V to ±18V supplies, and consume only 1.2mA/channel (typ). The MAX44291 features a shutdown input that reduces the supply current to 1µA/channel (typ) when in shutdown mode.

The rail-to-rail output swing maximizes the dynamic range when driving high-resolution ADCs even with low supply voltage. These devices achieve 10MHz of gain-bandwidth product.

The MAX44291/MAX44292/MAX44294 are available in an 8-pin µMAX^® (single), 8-pin SO (dual), and 14-pin SO (quad) packages and are specified over the -40°C to +125°C automotive temperature range.

Applications