10MHz/42MHz Low-Noise, Low-Bias Op Amps

The MAX40075/MAX40088 are wideband, low-noise, low-input bias current operational amplifiers offering rail-to-rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply current per amplifier when enabled and have ultra-low distortion (0.0002% THD+N), as well as low input voltage-noise density (4.2nV/) and low input current-noise density (0.5fA/). The low input bias current and low noise together with the wide bandwidth suit transimpedance amplifiers and imaging applications.

For power conservation, the MAX40075/MAX40088 offer a low-power shutdown mode that reduces supply current to 0.1µA and places the amplifiers outputs into a high impedance state. These amplifiers have outputs which swing rail-to-rail and their input common-mode voltage range includes ground. The MAX40075 is unity-gain stable with a gain-bandwidth product of 10MHz. The MAX40088 is gain-of-5 stable with a gain-bandwidth product of 42MHz.

Applications

* ADC Buffers * Automotive Power Train * DAC Output Amplifiers * Digital Scales * Low-Noise Microphone/Preamplifiers * Medical Instrumentation * Strain Gauges/Sensor Amplifiers * Transimpedance Amplifiers

* Low Input Voltage-Noise Density: 4.2nV/√Hz at 30kHz

* Low Input Current-Noise Density: 0.5fA/√Hz

* Low Input Bias Current: <1pA (typ)

* Low Distortion: 0.00035% or -109dB THD+N (1kΩ Load)

* Single-Supply Operation from +2.7V to +5.5V

* Input Common-Mode Voltage Range Includes Ground

* Rail-to-Rail Output Swings with a 1kΩ Load

* 10MHz GBW Product, Unity-Gain Stable (MAX40075 only)

* 42MHz GBW Product, Gain ≥ 5V/V (MAX40088 Only)

* Excellent DC Characteristics: Input VOS ≤ 30µV

* Low-Power Shutdown Mode: Reduces Supply Current to ≤1µA

* Available in Space-Saving 6-Bump WLP and 6-Pin SOT23 Packages

* AEC-Q100 Qualified. See Ordering Information