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Analog Devices Inc. ADA4841 Rail-to-Rail Output Amplifier

Analog Devices Inc. ADA4841 Rail-to-Rail Output Amplifier is a unity gain stable, low noise and distortion, rail-to-rail output amplifier with a maximum quiescent current of 1.5mA. Despite its low power consumption, this amplifier offers low wideband voltage noise performance of 2.1nV/√Hz and 1.4pA/√Hz current noise, along with an excellent spurious-free dynamic range (SFDR) of −105dBc at 100kHz. The amplifier has low 1/f noise of 7nV/√Hz and 13pA/√Hz at 10Hz to maintain a low noise environment at lower frequencies.

The output of Analog Devices Inc. ADA4841 (ADA4841-1 and ADA4841-2) can swing to less than 50mV of either rail. The input common-mode voltage range extends down to the negative supply. The ADA4841 can drive up to 10pF of capacitive load with minimal peaking. The ADA4841 provides the performance required to support efficiently emerging 16-bit to 18-bit ADCs. It is ideal for portable instrumentation, high channel count, industrial measurement, and medical applications. The ADA4841 is ideally suited to drive the AD7685/AD7686, 16-bit PulSAR ADCs.

The ADA4841 package features RoHS-compliant lead finishes. The amplifier is rated to work over the industrial temperature range (−40°C to +125°C).

Features

  • 1.1mA/amp low power
  • Low wideband noise
    • 2.1nV/√Hz
    • 1.4pA/√Hz
  • Low 1/f noise
    • 7nV/√Hz @ 10Hz
    • 13pA/√Hz @ 10Hz
  • −105dBc @ 100kHz, VO = 2Vp-p low distortion
  • High speed
    • 80MHz, −3dB bandwidth (G = +1)
    • 12V/μs slew rate
    • 175ns settling time to 0.1%
  • 0.3mV maximum low offset voltage 
  • Rail-to-rail output
  • Power down
  • 2.7V to 12V wide supply range 

Applications

  • Low power, low noise signal processing
  • Battery-powered instrumentation
  • 16-bit PulSAR® ADC drivers

Connection Diagrams

Schematic - Analog Devices Inc. ADA4841 Rail-to-Rail Output Amplifier
發佈日期: 2022-09-19 | 更新日期: 2022-09-22