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AD7944 Datasheet PulSAR 15.5 mW ADC

Manufacturer: Analog Devices

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General Description

The AD7944 is a 14-bit, 2.5 MSPS successive approximation analog-to-digital converter (SAR ADC).

It contains a low power, high speed, 14-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 AD7944 samples an analog input, IN+, between 0 V and VREF with respect to a ground sense, IN−.

Overview

14-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP AD7944.

Key Features

  • 14-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: ±0.25 LSB typical, ±1.0 LSB maximum SNR 84 dB, with on-chip reference 84.5 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 L.

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