GENERAL DESCRIPTION

The AD7684 is a 16-bit, charge redistribution, successive approximation, PulSAR® analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.7 V to 5.5 V. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a serial, SPI-compatible interface port. The part also contains a low noise, wide bandwidth, short aperture delay, track-and-hold circuit.

FEATURES

16-bit resolution with no missing codes

Throughput: 100 kSPS

INL: ±1 LSB typical, ±3 LSB maximum

True differential analog input range: ±VREF

0 V to VREF with VREF up to VDD on both inputs

Single-supply operation: 2.7 V to 5.5 V

Serial interface SPI®-/QSPI-™/MICROWIRE-™/DSP-compatible

Power dissipation

4 mW @ 5 V

1.5 mW @ 2.7 V

150 μW @ 2.7 V/10 kSPS

Standby current: 1 nA

8-lead MSOP package

APPLICATIONS

Battery-powered equipment

Data acquisition

Instrumentation

Medical instruments

Process control

AD7940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AD7940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。