AD7864集成電路（IC）的模數(shù)轉換器（ADC）規(guī)格書PDF中文資料

AD7864屬于集成電路（IC）的模數(shù)轉換器（ADC）。由亞德諾半導體技術有限公司制造生產(chǎn)的AD7864模數(shù)轉換器（ADC）模數(shù)轉換器（ADC、A/D 或 A 轉 D）對模擬信號進行采樣，例如由麥克風采集的聲音或傳感器的輸出，然后將其轉換為數(shù)字信號。一般來說，數(shù)字輸出是二進制補碼二進制數(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)轉換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉換器數(shù)和架構（例如自適應增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進行選擇。

GENERAL DESCRIPTION

The AD7864 is a high speed, low power, 4-channel simultaneous sampling 12-bit A/D converter that operates from a single +5? V supply. The part contains a 1.65 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 (AD7864-1), 0 V to 2.5 V, 0 V to 5 V for AD7864-2 and ±2.5? V (AD7864-3).

FEATURES

High Speed (1.65 μs) 12-Bit ADC

Four Simultaneously Sampled Inputs

Four Track/Hold Amplifiers

0.35 μs Track/Hold Acquisition Time

1.65 μs Conversion Time per Channel

HW/SW Select of Channel Sequence for Conversion

Single Supply Operation

Selection of Input Ranges:

±10 V, ±5 V for AD7864-1

±2.5 V for AD7864-3

0 V to 2.5 V, 0 V to 5 V for AD7864-2

High Speed Parallel Interface Which Also Allows

Interfacing to 3 V Processors

Low Power, 90 mW Typ

Power Saving Mode, 20 μW Typ

Overvoltage Protection on Analog Inputs

APPLICATIONS

AC Motor Control

Uninterrupted Power Supplies

Data Acquisition Systems

Communications