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AD7722 - 16-Bit 195kSPS CMOS Sigma-Delta ADC

General Description

The AD7722 is a complete low power, 16-bit, sigma-delta ADC.

The part operates from a +5 V supply and accepts a differential input voltage range of 0 V to +2.5 V or ± 1.25 V centered around a common-mode bias.

The AD7722 provides 16-bit performance for input bandwidths up to 90.625 kHz.

Key Features

  • 16-Bit Sigma-Delta ADC 64 ؋ Oversampling Ratio Up to 220 kSPS Output Word Rate Low-Pass, Linear Phase Digital Filter Inherently Monotonic On-Chip 2.5 V Voltage Reference Single Supply +5 V High Speed Parallel or Serial Interface 16-Bit, 195 kSPS CMOS, Sigma-Delta ADC AD7722.

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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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a FEATURES 16-Bit Sigma-Delta ADC 64 ؋ Oversampling Ratio Up to 220 kSPS Output Word Rate Low-Pass, Linear Phase Digital Filter Inherently Monotonic On-Chip 2.5 V Voltage Reference Single Supply +5 V High Speed Parallel or Serial Interface 16-Bit, 195 kSPS CMOS, Sigma-Delta ADC AD7722 FUNCTIONAL BLOCK DIAGRAM DGND DVDD AGND AVDD REF1 AD7722 2.5V REFERENCE REF2 VIN(+) VIN(–) 16-BIT A/D CONVERTER Σ∆ MODULATOR FIR FILTER P/S CAL RESET SYNC CS DVAL/RD CFMT/DRDY DB0 DB1 DB2 CONTROL LOGIC CLOCK CIRCUITRY XTAL CLKIN UNI DB15 DB14 DB13 DB12 DB11 DB10 DB9/FSO GENERAL DESCRIPTION The AD7722 is a complete low power, 16-bit, sigma-delta ADC. The part operates from a +5 V supply and accepts a differential input voltage range of 0 V to +2.5 V or ± 1.25 V centered around a common-mode bias.