ADC574ASH BURR-BROWN [Burr-Brown Corporation], ADC574ASH Datasheet

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ADC574ASH

Manufacturer Part Number
ADC574ASH
Description
Microprocessor-Compatible ANALOG-TO-DIGITAL CONVERTER
Manufacturer
BURR-BROWN [Burr-Brown Corporation]
Datasheet

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FEATURES
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
International Airport Industrial Park
© 1984 Burr-Brown Corporation
Control
Inputs
Bipolar
Offset
20V Range
10V Range
Reference
Input
Reference
Output
Tel: (520) 746-1111
COMPLETE 12-BIT A/D CONVERTER WITH
REFERENCE, CLOCK, AND 8-, 12-, or 16-
BIT MICROPROCESSOR BUS INTERFACE
IMPROVED PERFORMANCE SECOND
SOURCE FOR 574A-TYPE A/D
CONVERTERS
Conversion Time: 25 s max
Bus Access Time: 150ns max
A
Operation Eliminated
DUAL IN-LINE PLASTIC, PLCC AND
HERMETIC CERAMIC
FULLY SPECIFIED FOR OPERATION ON
NO MISSING CODES OVER
TEMPERATURE:
0 C to +75 C: ADC574AJ and K Grades
–55 C to +125 C: ADC574ASH, TH
12V OR 15V SUPPLIES
O
Input: Bus Contention During Read
ANALOG-TO-DIGITAL CONVERTER
Twx: 910-952-1111
Microprocessor-Compatible
®
Mailing Address: PO Box 11400
Cable: BBRCORP
Comparator
FPO
Telex: 066-6491
PDS-550G
Tucson, AZ 85734
Clock
for freedom from latch-up and for optimum AC per-
formance. It is complete with a self-contained +10V
reference, internal clock, digital interface for micropro-
cessor control, and three-state outputs.
The reference circuit, containing a buried zener, is laser-
trimmed for minimum temperature coefficient. The
clock oscillator is current-controlled for excellent sta-
bility 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 pro-
vide 8- or 12-bit resolution. The conversion time for 12
bits is factory set for 25 s maximum.
Output data are available in a parallel format from TTL-
compatible 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.
Control Logic
12-Bit D/A
Converter
Reference
10V
FAX: (520) 889-1510
• Street Address: 6730 S. Tucson Blvd.
Immediate Product Info: (800) 548-6132
ADC574A
Printed in U.S.A., August, 1993
• Tucson, AZ 85706
Status
Parallel
Data
Output

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ADC574ASH Summary of contents

Page 1

... HERMETIC CERAMIC FULLY SPECIFIED FOR OPERATION ON 12V OR 15V SUPPLIES NO MISSING CODES OVER TEMPERATURE +75 C: ADC574AJ and K Grades – +125 C: ADC574ASH, TH 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 ...

Page 2

SPECIFICATIONS ELECTRICAL + +12V or +15V –12V or –15V, and PARAMETER RESOLUTION INPUTS ANALOG Voltage Ranges: Unipolar Bipolar Impedance +10V, 5V 10V +20V DIGITAL ...

Page 3

SPECIFICATIONS (CONT) ELECTRICAL + +12V or +15V –12V or –15V, and PARAMETERS INTERNAL REFERENCE VOLTAGE Voltage (5) Source Current Available for External Loads POWER SUPPLY REQUIREMENTS Voltage: V ...

Page 4

... ADC574AKP Plastic DIP ADC574AJH Ceramic DIP ADC574AKH Ceramic DIP ADC574ASH Ceramic DIP ADC574ATH Ceramic DIP NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix D of Burr-Brown IC Data Book. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’ ...

Page 5

DISCUSSION OF SPECIFICATIONS LINEARITY ERROR Linearity error is defined as the deviation of actual code transition values from the ideal transition values. Ideal transition values lie on a line drawn through zero (or minus full scale for bipolar operation) and ...

Page 6

This change, of course, results in a proportional change in all code transition values (i.e., a gain error). The specification describes the maximum change in ...

Page 7

CC Unipolar Full-Scale Offset Adjust Adjust 100k 2 10 Ref In 100 100k 8 Ref Out –V CC 100 12 Bipolar Offset 10V Range 13 Analog Input 14 20V Range 9 Analog Common FIGURE 2. Unipolar ...

Page 8

CE CS R/C 12 ...

Page 9

SYMBOL Convert Mode t STS Delay from CE DSC t CE Pulse Width HEC Setup time SSC t CS low during CE high HSC t R setup SRC t R/C low during CE high ...

Page 10

When A is low, the byte addressed contains the 8MSBs. O When A is high, the byte addressed contains the 4LSBs O from the conversion followed by four logic zeros which have been forced by the control logic. The left-justified ...

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