器件名称:
ALD521DSD
功能描述:
24 BIT SERIAL INTERFACE DIGITAL CONTROLLER
文件大小:
40.12KB 共6页
简 介:
ADVANCED LINEAR DEVICES, INC. ALD521D 24 BIT SERIAL INTERFACE DIGITAL CONTROLLER APPLICATIONS Operate in conjunction with ALD500/ALD500R Precision analog signal processors High accuracy DC voltage measurement functions Portable battery operated instruments PC-based software control or stand-alone operation (without other processors or PC) Serial digital output interface to other microprocessors or microcontrollers GENERAL DESCRIPTION The ALD521D is a digital controller designed to interface to the ALD500 or ALD500R integrating dual slope analog processors as a chip set for building a precision analog-to-digital converter. With the ALD521D and ALD500R, together with a few external capacitors and resistors, a precision Analog to Digital converter with auto zero and auto-polarity can be implemented. The ALD521D can operate in either a stand-alone mode or in an external microprocessor control mode. In the stand-alone mode, the ALD521D can either making continuous measurements or a single measurement. Under external microprocessor control, the ALD521D can directly interact with a PC under PC software control via a standard parallel printer port with no other components, or it can also communicate with other microcontrollers serially. The ALD500/ALD500R analog processors consist of on-chip digital control circuitry to accept control inputs, integrating buffer amplifiers, analog switches, and voltage comparators. It functions in four operating modes, or phases, namely auto ze……
