ADC1225CCD-1 datasheet(1/18 Pages) NSC

Part #	ADC1225CCD-1

Description	12-Bit Plus Sign mP Compatible A/D Converters

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Manufacturer	NSC [National Semiconductor (TI)]

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TLH5676

June 1994

ADC1205ADC1225 12-Bit Plus Sign

mP Compatible AD Converters

General Description

The ADC1205 and ADC1225 are CMOS 12-bit plus sign

successive approximation AD converters

The 24-pin

ADC1205 outputs the 13-bit data result in two 8-bit bytes

formatted high-byte first with sign extended The 28-pin

ADC1225 outputs a 13-bit word in parallel for direct inter-

face to a 16-bit data bus

Negative numbers are represented in 2’s complement data

format All digital signals are fully TTL and MOS compatible

A unipolar input (0V to 5V) can be accommodated with a

single 5V supply while a bipolar input (b5V to a5V) re-

quires the addition of a 5V negative supply

The ADC1205C and ADC1225C have a maximum non-lin-

earity of 00224% of Full Scale

Key Specifications

Y

Resolution12 bits plus sign

Y

Linearity Error

g

1 LSB

Y

Conversion Time100 ms

Features

Y

Compatible with all mPs

Y

True differential analog voltage inputs

Y

0V to 5V analog voltage range with single 5V supply

Y

TTLMOS inputoutput compatible

Y

Low power25 mW max

Y

Standard 24-pin or 28-pin DIP

Connection and Functional Diagrams

Dual-In-Line Package

TLH5676 – 1

Top View

Dual-In-Line Package

TLH5676 – 2

Top View

TLH5676 – 3

See Ordering Information

TRI-STATE

is a registered trademark of National Semiconductor Corporation

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A

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ADC1225CCD-1 Datasheet(PDF) 1 Page - National Semiconductor (TI)

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