ADA4841-1 Audio Power Amplifier ICAudio Power Amplifier IC
digital audio amplifier ic
,audio preamplifier ic
ADA4841-1 Audio Power Amplifier ICAudio Power Amplifier IC
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
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. In spite of 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.
The ADA4841-1/ADA4841-2 output can swing to less than 50 mV of either rail. The input common-mode voltage range extends down to the negative supply. The ADA4841-1/ ADA4841-2 can drive up to 10 pF of capacitive load with minimal peaking.
The ADA4841-1/ADA4841-2 provide the performance required to efficiently support emerging 16-bit to 18-bit ADCs and are ideal for portable instrumentation, high channel count, industrial measurement, and medical applications. The ADA4841-1/ ADA4841-2 are ideally suited to drive the AD7685/AD7686, 16-bit PulSAR ADCs.
The ADA4841-1/ADA4841-2 packages feature RoHS compliant lead finishes. The amplifiers are rated to work over the industrial temperature range (−40°C to +125°C).
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