ADI AD7721ARZ

12，16312.5k，468.75k1差分5V5V-40°C ~ 85°C

Overview

The AD7721ARZ is a complete low power, 12-/16-bit, sigma-delta ADC. The part operates from a +5 V supply and accepts a differential input of 0 V to 2.5 V or ±1.25 V. The analog input is continuously sampled by an analog modulator at twice the clock frequency eliminating the need for external sample-and-hold circuitry. The modulator output 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. Settling time for a step input is 218.4 µs while the group delay for the filter is 109.2 µs when the master clock equals 15 MHz.

CMOS construction ensures low power dissipation while a power-down mode reduces the power consumption to only 100 µW.

Features

Tube Package
1 Functions
28 basic kinds of terminations
28 pin count
Minimal supply voltage of 4.75V
5V power supplies

Surface Mount Mounting Type

Applications

There are a lot of Analog Devices Inc.
AD7721ARZ ADC applications.

• Scientific instruments
• Rotary encoder
• Displaying
• Transducer
• Microcontrollers.
• Digital Storage Oscilloscope
• Scientific instruments.
• Music reproduction technology
• Communication Systems
• Data Acquisition Systems