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ADC574A

Burr-Brown Corporation
Part Number ADC574A
Manufacturer Burr-Brown Corporation
Description Microprocessor-Compatible ANALOG-TO-DIGITAL CONVERTER
Published Mar 24, 2005
Detailed Description ® ADC574A FPO Microprocessor-Compatible ANALOG-TO-DIGITAL CONVERTER FEATURES q COMPLETE 12-BIT A/D CONVERTER WITH REFE...
Datasheet PDF File ADC574A PDF File

ADC574A
ADC574A

Overview
® ADC574A FPO Microprocessor-Compatible ANALOG-TO-DIGITAL CONVERTER FEATURES q COMPLETE 12-BIT A/D CONVERTER WITH REFERENCE, CLOCK, AND 8-, 12-, or 16BIT MICROPROCESSOR BUS INTERFACE q IMPROVED PERFORMANCE SECOND SOURCE FOR 574A-TYPE A/D CONVERTERS Conversion Time: 25µs max Bus Access Time: 150ns max AO Input: Bus Contention During Read Operation Eliminated q DUAL IN-LINE PLASTIC, PLCC AND HERMETIC CERAMIC q FULLY SPECIFIED FOR OPERATION ON ±12V OR ±15V SUPPLIES q NO MISSING CODES OVER TEMPERATURE: 0°C to +75°C: ADC574AJ and K Grades –55°C to +125°C: ADC574ASH, TH for freedom from latch-up and for optimum AC performance.
It is complete with a self-contained +10V reference, internal clock, digital interface for microprocessor control, and three-state outputs.
The reference circuit, containing a buried zener, is lasertrimmed for minimum temperature coefficient.
The clock oscillator is current-controlled for excellent stability over temperature.
Full-scale and offset errors may be externally trimmed to zero.
Internal scaling resistors are provided for the selection of analog input signal ranges of 0V to +10V, 0V to +20V, ±5V, and ±10V.
The converter may be externally programmed to provide 8- or 12-bit resolution.
The conversion time for 12 bits is factory set for 25µs maximum.
Output data are available in a parallel format from TTLcompatible three-state output buffers.
Output data are coded in straight binary for unipolar input signals and bipolar offset binary for bipolar input signals.
The ADC574A, available in both industrial and military temperature ranges, requires supply voltages of +5V and ±12V or ±15V.
It is packaged in a 28-pin plastic DIP, and a hermetic side-brazed ceramic DIP.
DESCRIPTION The ADC574A is a 12-bit successive approximation analog-to-digital converter, utilizing state-of-the-art CMOS and laser-trimmed bipolar die custom-designed Control Inputs Control Logic Status Bipolar Offset 20V Range Clock Successive Approximation Register Three-Sta...


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