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

AD7823属于集成电路（IC） > 模数转换器（ADC）。亚德诺半导体技术有限公司制造生产的AD7823模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。