ADA4922-1ACPZ-RL7

高压，差分18位ADC驱动器 High Voltage, Differential 18-Bit ADC Driver

Product Details

The ADA4922-1 is a differential driver for 16-bit to 18-bit analog-to-digital converters ADCs that have differential input ranges up to ±20 V. Configured as an easy-to-use, single-ended-to-differential amplifier, the ADA4922-1 requires no external components to drive ADCs. The ADA4922-1 provides essential benefits such as low distortion and high SNR that are required for driving ADCs with resolutions up to 18 bits.

With a wide supply voltage range 5 V to 26 V, high input impedance, and fixed differential gain of 2, the ADA4922-1 is designed to drive ADCs found to in a variety of applications, including industrial instrumentation.

The ADA4922-1 is manufactured on Analog Devices, Inc., proprietary, second-generation XFCB process that enables the amplifier to achieve excellent noise and distortion performance on high supply voltages.

The ADA4922-1 is available in an 8-lead 3 mm × 3 mm LFCSP as well as an 8-lead SOIC package. Both packages are equipped with an exposed paddle for more efficient heat transfer. The ADA4922-1 is rated to work over the extended industrial temperature range, −40°C to +85°C.

Applications

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High voltage data acquisition systems

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Industrial instrumentation

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Spectrum analysis

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ATE

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Medical instruments

### Features and Benefits

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Single-ended-to-differential conversion

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Low distortion VO, dm = 40 V p-p

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−99 dBc HD at 100 kHz

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Low differential output referred noise: 12 nV/√Hz

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High input impedance: 11 MΩ

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Fixed gain of 2

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No external gain components required

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Low output-referred offset voltage: 1.1 mV maximum

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Low input bias current: 3.5 μA maximum

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Wide supply range

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5 V to 26 V

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Can produce differential output signals in excess of 40 V p-p

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High speed

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38 MHz, −3 dB bandwidth at 0.2 V p-p differential output

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Fast settling time

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200 ns to 0.01% for 12 V step on ±5 V supplies

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Disable feature

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Available in space-saving, thermally enhanced packages

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8-lead, 3 mm × 3 mm LFCSP

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8-lead SOIC

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Low supply current: IS = 10 mA on ±12 V supplies