ADA4841-1YRZ-RL

低功耗，低噪声和失真，轨到轨输出放大器 Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier

Product Details

The ADA4841-1 is a unity gain stable, low noise and distortion, rail-to-rail output amplifier that has a quiescent current of 1.5 mA maximum. In spite of its low power consumption, this amplifier offers 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 amplifier has low 1/f noise of 7 nV/√Hz and 13 pA/√Hz at 10 Hz.

The ADA4841-1 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 can drive up to 10 pF of capacitive load with minimal peaking.

The ADA4841-1 provides the performance required to efficiently support emerging 16-bit to 18-bit ADCs and is ideal for portable instrumentation, high channel count, industrial measurement, and medical applications. The ADA4841-1 is ideally suited to drive the AD7685/AD7686, 16-bit PulSAR ADCs.

The ADA4841-1 package features RoHS compliant lead finishes. The amplifier is rated to work over the industrial temperature range −40°C to +125°C.

**Applications**

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Low power, low noise signal processing

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Battery-powered instrumentation

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16-bit PulSAR® ADC drivers

### Features and Benefits

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Low power: 1.1 mA/amp

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Low wideband noise

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2.1 nV/√Hz

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1.4 pA/√Hz

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Low 1/f noise

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7 nV/√Hz @ 10 Hz

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13 pA/√Hz @ 10 Hz

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

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High speed

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80 MHz, −3 dB bandwidth G = +1

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12 V/μs slew rate

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175 ns settling time to 0.1%

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Low offset voltage: 0.3 mV maximum

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Rail-to-rail output

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Power down

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Wide supply range: 2.7 V to 12 V