MAX44206

180MHz, Low-Noise, Low-Distortion, Fully Differential Op Amp/ADC Driver

Industry's Best Combination of Low Power, Low Noise, THD, and Gain Bandwidth

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Overview

Low Input Noise Drives Precision SAR ADCs
- 3.1nV/ at 1kHz
- 200nV_P-P from 0.1Hz to 10Hz
High Speed for DC and AC Applications
- Gain-Bandwidth Product 400MHz
- -3dB Gain-Bandwidth Product 180MHz
- Slew Rate 180V/µs
Ultra-Low Distortion Drives AC Inputs to 20-Bit SAR ADCs
- HD2 = -141dB, HD3 = -152dB at f_IN = 10kHz, V_OUT,DIFF = 2V_P-P
- HD2 = -106dB, HD3 = -115dB at f_IN = 1MHz, V_OUT,DIFF = 2V_P-P
Wide Supply Range (2.7V to 13.2V) Drives Unipolar or Bipolar (±6.6V) Signals
3.7mA Quiescent Supply Current with Only 6.8µA Shutdown Current
8-Pin µMAX Package Saves Board Space

The MAX44206 is a low-noise, low-distortion fully differential operational amplifier suitable for driving high-speed, high-resolution, 20-/18-/16-bit SAR ADCs, including the MAX11905 ADC family. Featuring a combination of wide 2.7V to 13.2V supply voltage range and wide 400MHz bandwidth, the MAX44206 is suitable for low-power, high-performance data acquisition systems.

The MAX44206 offers a VOCM input to adjust the output common-mode voltage, eliminating the need for a coupling transformer or AC-coupling capacitors. This adjustable output common-mode voltage allows the MAX44206 to match the input common-mode voltage range of the ADC following it. Shutdown mode consumes only 6.8µA and extends battery life in battery-powered applications or reduces average power in systems cycling between shutdown and periodic data readings.

The MAX44206 is available in an 8-pin µMAX^® package and is specified for operation over the -40°C to +125°C temperature range.

Applications