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AD7985 Datasheet PulSAR 15.5 mW ADC

Manufacturer: Analog Devices

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General Description

The AD7985 is a 16-bit, 2.5 MSPS successive approximation analog-to-digital converter (SAR ADC).

It contains a low power, high speed, 16-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and a versatile serial interface port.

On the rising edge of CNV, the AD7985 samples an analog input, IN+, between 0 V and REF with respect to a ground sense, IN−.

Overview

16-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP AD7985.

Key Features

  • 16-bit resolution with no missing codes Throughput: 2.5 MSPS (TURBO high), 2.0 MSPS (TURBO low) Low power dissipation 15.5 mW at 2.5 MSPS, with external reference 28 mW at 2.5 MSPS, with internal reference INL: ±0.7 LSB typical, ±1.5 LSB maximum SNR 88.5 dB, with on-chip reference 90 dB, with external reference 4.096 V internal reference: typical drift of ±10 ppm/°C Pseudo differential analog input voltage range 0 V to VREF with VREF up to 5.0 V Allows use of any input range No pipeline delay Lo.

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