AD7722AS

QFP, 16-bit, sigma-delta ADC, 220 kSPS, +5 V, Inherently Monotonic, Linear Phase Digital Filter

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PartNumber:: AD7722AS

Brand:: Analog Devices - ADI | Pack: QFP | D/C: 06+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
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Products Upload time: 2011-11-03

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Part Number:AD7722AS
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Product Summary

The AD7722AS 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 AD7722AS provides 16-bit performance for input bandwidths up to 90.625 kHz. The part provides data at an output word rate of 195.3 kHz. The analog input is continuously sampled by an analog modulator eliminating the need for external sample-and-hold circuitry. The modulator output of the AD7722AS is processed by two Finite Impulse Response (FIR) digital filters in series. The on-chip filtering reduces the external antialias requirements to first order, in most cases.

Parametrics

AD7722AS absolute maximum ratings: (1)DVDD to DGND: –0.3 V to 7 V; (2)AVDD, AVDD1 to AGND: –0.3 V to 7 V; (3)AVDD, AVDD1 to DVDD: –1 V to +1 V; (4)AGND, AGND1 to DGND: –0.3 V to +0.3 V; (5)Digital Inputs to DGND: –0.3 V to DVDD + 0.3 V; (6)Digital Outputs to DGND: –0.3 V to DVDD + 0.3 V; (7)VIN(+), VIN(–) to AGND: –0.3 V to AVDD + 0.3 V; (8)REF1 to AGND: –0.3 V to AVDD + 0.3 V; (9)REF2 to AGND: –0.3 V to AVDD + 0.3 V; (10)DGND, AGND1, AGND2: ±0.3 V; (11)Operating Temperature Range: –40 to +85℃; (12)Storage Temperature Range: –65 to +150℃; (13)Junction Temperature: +150℃; (14)θJA Thermal Impedance: 95℃/W; (15)Lead Temperature, Soldering: Vapor Phase (60 sec), +215℃; (16)Infrared (15 sec), +220℃.

Features

AD7722AS features: (1)16-Bit Sigma-Delta ADC; (2)64× Oversampling Ratio; (3)Up to 220 kSPS Output Word Rate; (4)Low-Pass, Linear Phase Digital Filter; (5)Inherently Monotonic; (6)On-Chip 2.5 V Voltage Reference; (7)Single Supply +5 V; (8)High Speed Parallel or Serial Interface.