AD8656ARZ-REEL

低噪声，精密CMOS放大器 Low Noise, Precision CMOS Amplifier

Product Details

The AD8655/AD8656 are the industry’s lowest noise, precision CMOS amplifiers. They leverage the Analog Devices DigiTrim® technology to achieve high dc accuracy.

The AD8655/AD8656 provide low noise 2.7 nV/√Hz at 10 kHz, low THD + N 0.0007%, and high precision performance 250 μV max over VCM to low voltage applications. The ability to swing rail-to-rail at the input and output enables designers to buffer analog-to-digital converters ADCs and other wide dynamic range devices in single-supply systems.

The high precision performance of the AD8655/AD8656 improves the resolution and dynamic range in low voltage applications. Audio applications, such as microphone pre-amps and audio mixing consoles, benefit from the low noise, low distortion, and high output current capability of the AD8655/AD8656 to reduce system level noise performance and maintain audio fidelity. The high precision and rail-to-rail input and output of the AD8655/ AD8656 benefit data acquisition, process controls, and PLL filter applications.

The AD8655/AD8656 are fully specified over the −40°C to +125°C temperature range. The AD8655/AD8656 are available in Pb-free, 8-lead MSOP and SOIC packages. The AD8655/ AD8656 are both available for automotive applications.

**Applications**

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ADC and DAC buffers

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Audio

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Industrial controls

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Precision Filters

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Digital Scales

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Automotive collision avoidance

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PLL filters

### Features and Benefits

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Low Noise:

2.7 nV/√rHz @ f = 10 kHz

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Low offset voltage:

250 μV max over Vcm

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Low Distortion: 0.0008%

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Offset voltage drift:

0.4 μV/°C typ and 2.3 μV/°C max

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Bandwidth: 28 MHz

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Rail-to-rail Input/Output

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Unity Gain Stable

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2.7 V to 5.5 V Operation

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−40°C to +125°C Operation

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Qualified for automotive applications