Analog Devices Inc. AD7723BSZ

Description
The AD7723 is a 16-bit, sigma-delta analog-to-digital converter (ADC) that operates from a single 5 V supply. It features a continuous sampling analog input, eliminating the need for an external sample-and-hold circuit. The modulator output is processed by a finite impulse response (FIR) digital filter, which provides on-chip filtering and reduces external antialias requirements. The digital filter frequency response can be programmed to be either low-pass or band-pass.
The AD7723 offers 16-bit performance for input bandwidths up to 460 kHz at an output word rate of up to 1.2 MHz. The sample rate, filter corner frequencies, and output word rate are set by the crystal oscillator or external clock frequency. Data can be read from the device in either serial or parallel format. A stereo mode allows data from two devices to share a single serial data line.
The AD7723 includes an on-chip 2.5 V reference. Alternatively, an external reference can be used. A power-down mode reduces the idle power consumption to 200 µW.

Features
16-bit I-A ADC
1.2 MSPS output word rate
32x/16x oversampling ratio
Low-pass and band-pass digital filter
Linear phase
On-chip 2.5 V voltage reference
Standby mode
Flexible parallel or serial interface
Crystal oscillator
Single 5 V supply

Applications
Audio signal processing
Data acquisition
Industrial control
Medical instrumentation
Test and measurement