AD7865集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）規(guī)格書PDF中文資料

AD7865屬于集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD7865模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對(duì)模擬信號(hào)進(jìn)行采樣，例如由麥克風(fēng)采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號(hào)。一般來說，數(shù)字輸出是二進(jìn)制補(bǔ)碼二進(jìn)制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構(gòu)（例如自適應(yīng)增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進(jìn)行選擇。

GENERAL DESCRIPTION

The AD7865 is a fast, low power, four-channel simultaneous sampling 14-bit A/D converter that operates from a single 5 V supply. The part contains a 2.4 μs successive approximation ADC, four track/hold amplifiers, 2.5 V reference, on-chip clock oscillator, signal conditioning circuitry and a high speed parallel interface. The input signals on four channels are sampled simultaneously thus preserving the relative phase information of the signals on the four analog inputs. 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.

FEATURES

Fast (2.4 μs) 14-Bit ADC

Four Simultaneously Sampled Inputs

Four Track/Hold Amplifiers

0.35 μs Track/Hold Acquisition Time

2.4 μs Conversion Time per Channel

HW/SW Select of Channel Sequence for Conversion

Single Supply Operation

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

0 V to +5 V and 0 V to +2.5 V

High Speed Parallel Interface Which Also Allows

Interfacing to 3 V Processors

Low Power, 115 mW Typ

Power Saving Mode, 15 μW Typ

Overvoltage Protection on Analog Inputs

APPLICATIONS

AC Motor Control

Uninterruptible Power Supplies

Industrial Power Meters/Monitors

Data Acquisition Systems

Communications