GENERAL DESCRIPTION

The AD7823 is a high speed, low power, 8-bit A/D converter that operates from a single 2.7 V to 5.5 V supply. The part contains a 4 µs typ successive approximation A/D converter, inherent track-and-hold functionality (with a pseudo differential input) and a high speed serial interface that interfaces to most microcontrollers. The AD7823 is fully specified over a temperature range of –40°C to +125°C.

FEATURES

8-Bit ADC with 4 μs Conversion Time

Small Footprint 8-Lead microSOIC Package

Specified Over a –40°C to +125°C Temperature Range

Inherent Track-and-Hold Functionality

Operating Supply Range: 2.7 V to 5.5 V

Specifications at 2.7 V to 5.5 V and 5 V ± 10

Microcontroller Compatible Serial Interface

Optional Automatic Power-Down

Low Power Operation:

570 μW at 10 kSPS Throughput Rate

2.9 mW at 50 kSPS Throughput Rate

Analog Input Range: 0 V to VREF

Reference Input Range: 0 V to VDD

“Drop In” Upgrade to 10 Bits Available (AD7810)

APPLICATIONS

Low Power, Hand-Held Portable Applications

Requiring Analog-to-Digital Conversion

with 8-Bit Accuracy, e.g.,

Battery-Powered Test Equipment

Battery-Powered Communications Systems