AD7899ARS-2集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

AD7899ARS-2属于集成电路（IC）的模数转换器（ADC）。由亚德诺半导体技术有限公司制造生产的AD7899ARS-2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。

GENERAL DESCRIPTION

The AD7899 is a fast, low-power, 14-bit A/D converter that operates from a single 5 V supply. The part contains a 2.2 µs successive-approximation ADC, a track/hold amplifier, 2.5 V reference, on-chip clock oscillator, signal conditioning circuitry, and a high-speed parallel interface. The part accepts analog input ranges of ±10 V, ±5 V, ±2.5 V, 0 V to 2.5 V, and 0 V to 5 V. Overvoltage protection on the analog input for the part allows the input voltage to be exceeded without damaging the parts.

Speed of conversion can be controlled either by an internally trimmed clock oscillator or by an external clock.

PRODUCT HIGHLIGHTS

1. The AD7899 features a fast (2.2 µs) ADC allowing through put rates of up to 400 kSPS.

2. The AD7899 operates from a single 5 V supply and consumes only 80 mW typ making it ideal for low power and portable applications.

3. The part offers a high-speed parallel interface. The interface can operate in 3 V and 5 V mode allowing for easy connec tion to 3 V or 5 V microprocessors, microcontrollers, and digital signal processors.

4. The part is offered in three versions with different analog input ranges. The AD7899-1 offers the standard industrial ranges of ±10 V and ±5 V; the AD7899-2 offers a unipolar range of 0 V to 2.5 or 0 V to 5 V, and the AD7899-3 has an input range of ±2.5 V.

FEATURES

Fast (2.2 μs) 14-Bit ADC

400 kSPS Throughput Rate

0.3 μs Track/Hold Acquisition Time

Single Supply Operation

Selection of Input Ranges: ±10 V, ±5 V and ±2.5 V 0 V to 2.5 V and 0 V to 5 V

High-Speed Parallel Interface which Also Allows Interfacing to 3 V Processors

Low Power, 80 mW Typ

Power-Saving Mode, 20 μW Typ

Overvoltage Protection on Analog Inputs

Power-Down Mode via STBY Pin