GENERAL DESCRIPTION

The AD7991/AD7995/AD7999 are 12-/10-/8-bit, low power, successive approximation ADCs with an I2C®-compatible interface. Each part operates from a single 2.7 V to 5.5 V power supply and features a 1 μs conversion time. The track-and-hold amplifier allows each part to handle input frequencies of up to 14 MHz, and a multiplexer allows taking samples from four channels.

FEATURES

12-/10-/8-bit ADCs with fast conversion time: 1 μs typical

4 analog input channels/3 analog input channels with reference input

Specified for VDDof 2.7 V to 5.5 V

Sequencer operation

Temperature range: −40°C to +125°C

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

2 versions allow 2 I2C addresses

Low power consumption

Shutdown mode: 1 μA maximum

8-lead SOT-23 package

APPLICATIONS

System monitoring

Battery-powered systems

Data acquisition

Medical instruments

AD7999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AD7999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。