GENERAL DESCRIPTION

The AD7890 is an 8-channel 12-bit data acquisition system. The part contains an input multiplexer, an on-chip track/hold amplifier, a high speed 12-bit ADC, a 2.5 V reference, and a high speed, serial interface. The part operates from a single 5 V supply and accepts an analog input range of ±10 V (AD7890-10), 0 V to 4.096 V (AD7890-4), and 0 V to 2.5 V (AD7890-2).

FEATURES

Fast 12-bit ADC with 5.9 μs conversion time

Eight single-ended analog input channels

Selection of input ranges:

±10 V for AD7890-10

0 V to 4.096 V for AD7890-4

0 V to 2.5 V for AD7890-2

Allows separate access to multiplexer and ADC

On-chip track/hold amplifier

On-chip reference

High-speed, flexible, serial interface

Single supply, low-power operation (50 mW maximum)

Power-down mode (75 μW typ)

AD7890AR-4属于集成电路（IC） > ADC/DAC - 特殊用途。亚德诺半导体技术有限公司制造生产的AD7890AR-4ADC/DAC - 特殊用途该产品族中的产品可用于模拟和数字表示的信息转换，适用于特定用例，或集成了通用数据转换器中不常见的其他功能。例如针对超声或汽车雷达应用集成了低噪声放大器和可变增益级的器件、注重音频和视频的产品、在段码式显示器上集成显示测量值功能的器件、集成输入输出电气隔离的器件等。