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AD7944 - PulSAR 15.5 mW ADC

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.

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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Other Datasheets by Analog Devices

Part Number Description
AD7940 14-Bit ADC
AD7942 Pseudo Differential ADC
AD7943 +3.3 V/+5 V Multiplying 12-Bit DACs
AD7945 +3.3 V/+5 V Multiplying 12-Bit DACs
AD7946 PulSAR ADC

Full PDF Text Transcription

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14-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP AD7944 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 Logic interface: 1.8 V/2.5 V/2.7 V Serial interface: SPI-/QSPI-/MICROWIRE-/DSP-compatible Ability to daisy-chain multiple ADCs with busy indicator 20-lead, 4 mm × 4 mm LFCSP (QFN) APPLICATION DIAGRAM 5V 2.5V 1.8V TO 2.
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