GENERAL DESCRIPTION

The AD7734 is a high precision, high throughput analog front end. True 16-bit p-p resolution is achievable with a total conversion time of 500 µs (2 kHz channel switching), making it ideally suitable for high resolution multiplexing applications. The part can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to a 15.4 kHz.

FEATURES

High resolution ADC

24 bits no missing codes

±0.0025 nonlinearity

Optimized for fast channel switching

18-bit p-p resolution (21 bits effective) at 500 Hz

16-bit p-p resolution (19 bits effective) at 2 kHz

14-bit p-p resolution (18 bits effective) at 15 kHz

On-chip per channel system calibration

4 single-ended analog inputs

Input ranges +5 V, ±5 V, +10 V, ±10 V

Overvoltage tolerant

Up to ±16.5 V not affecting adjacent channel

Up to ±50 V absolute maximum

3-wire serial interface

SPI™, QSPI™, MICROWIRE™, and DSP compatible

Schmitt trigger on logic inputs

Single-supply operation

5 V analog supply

3 V or 5 V digital supply

Package: 28-lead TSSOP

APPLICATIONS

PLCs/DCS

Multiplexing applications

Process control

Industrial instrumentation

AD7734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AD7734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。