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A0

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A8

GND

EOC

I/O CLOCK

ADDRESS

DATA OUT

CS

REF +

REF −

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A9

DB, DW, J, OR N PACKAGE

(TOP VIEW)

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I/O CLOCK

ADDRESS

DATA OUT

CS

REF +

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TLC1542I,, TLC1542M,, TLC1542Q

TLC1542C, TLC1543C, TLC1543I, TLC1543Q

SLAS052G – MARCH 1992 – REVISED JANUARY 2006

10-BIT ANALOG-TO-DIGITAL CONVERTERS

WITH SERIAL CONTROL AND 11 ANALOG INPUTS

• 10-Bit Resolution A/D Converter

• 11 Analog Input Channels

• Three Built-In Self-Test Modes

• Inherent Sample-and-Hold Function

• Total Unadjusted Error: ±1LSB Max

• On-Chip System Clock

• End-of-Conversion (EOC) Output

• Terminal Compatible With TLC542

• CMOS Technology

The TLC1542C, TLC1542I, TLC1542M, TLC1542Q,

TLC1543C, TLC1543I, and TLC1543Q are CMOS

10-bit switched-capacitor successive-approximation

analog-to-digital converters. These devices have

three inputs and a 3-state output [chip select (CS),

input-output

clock

(I/O

CLOCK),

address

input

(ADDRESS), and data output (DATA OUT)] that

provide a direct 4-wire interface to the serial port of a

host processor. These devices allow high-speed data

transfers from the host.

In addition to a high-speed A/D converter and

versatile control capability, these devices have an

on-chip 14-channel multiplexer that can select any

one of 11 analog inputs or any one of three internal

self-test voltages. The sample-and-hold function is

automatic. At the end of A/D conversion, the

end-of-conversion

(EOC)

output

goes

high

to

indicate that conversion is complete. The converter

incorporated in the devices features differential

high-impedance

reference

inputs

that

facilitate

ratiometric conversion, scaling, and isolation of

analog circuitry from logic and supply noise. A

switched-capacitor

design

allows

low-error

conversion

over

the

full

operating

free-air

temperature range.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 1992–2006, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.