GENERAL DESCRIPTION

The AD7824 and AD7828 are high speed, multichannel, 8-bit ADCs with a choice of four (AD7824) or eight (AD7828) multiplexed analog inputs. A half-flash conversion technique gives a fast conversion rate of 2.5 µs per channel, and the parts have a built-in track-and-hold function capable of digitizing full-scale signals of 10 kHz (157 mV/µs slew rate) on all channels. The AD7824 and AD7828 operate from a single 5 V supply and have an analog input range of 0 V to 5 V, using an external 5 V reference.

FEATURES

4 or 8 Analog Input Channels

Built-In Track-and-Hold Function

10 kHz Signal Handling on Each Channel

Fast Microprocessor Interface

Single 5 V Supply

Low Power: 50 mW

Fast Conversion Rate: 2.5 μs/Channel

Tight Error Specification: 1/2 LSB

AD7828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AD7828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。