GENERAL DESCRIPTION

The AD7997/AD7998 are 8-channel, 10- and 12-bit, low power, successive approximation ADCs with an I2C-compatible interface. The parts operate from a single 2.7 V to 5.5 V power supply and feature a 2 µs conversion time. The parts contain an 8-channel multiplexer and track-and-hold amplifier that can handle input frequencies up to 11 MHz.

FEATURES

10- and 12-bit ADC with fast conversion time: 2 µs typ

8 single-ended analog input channels

Specified for VDD of 2.7 V to 5.5 V

Low power consumption

Fast throughput rate: up to 188 kSPS

Sequencer operation

Automatic cycle mode

I2C®-compatible serial interface supports standard, fast, and high speed modes

Out-of-range indicator/alert function

Pin-selectable addressing via AS

Shutdown mode: 1 µA max

Temperature range: −40°C to +85°C

20-lead TSSOP package

See the AD7992 and AD7994 for 2-channel and 4-channel equivalent devices, respectively

AD7998BRU-0REEL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AD7998BRU-0REEL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。