GENERAL DESCRIPTION

The ADA4841-1/ADA4841-2 are unity gain stable, low noise and distortion, rail-to-rail output amplifiers that have a quiescent current of 1.5 mA maximum. Despite their low power consumption, these amplifiers offer low wideband voltage noise performance of 2.1 nV/√Hz and 1.4 pA/√Hz current noise, along with excellent spurious-free dynamic range (SFDR) of −105 dBc at 100 kHz. To maintain a low noise environment at lower frequencies, the amplifiers have low 1/f noise of 7 nV/√Hz and 13 pA/√Hz at 10 Hz.

FEATURES

Low power: 1.1 mA/amp

Low wideband noise

2.1 nV/√Hz

1.4 pA/√Hz

Low 1/f noise

7 nV/√Hz @ 10 Hz

13 pA/√Hz @ 10 Hz

Low distortion: −105 dBc @ 100 kHz, VO = 2 V p-p

High speed

80 MHz, −3 dB bandwidth (G = +1)

12 V/μs slew rate

175 ns settling time to 0.1

Low offset voltage: 0.3 mV maximum

Rail-to-rail output

Power down

Wide supply range: 2.7 V to 12 V

APPLICATIONS

Low power, low noise signal processing

Battery-powered instrumentation

16-bit PulSAR® ADC drivers

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