TLC2543C, TLC2543I, TLC2543M

12-BIT ANALOG-TO-DIGITAL CONVERTERS

WITH SERIAL CONTROL AND 11 ANALOG INPUTS

SLAS079D – DECEMBER 1993 – REVISED MAY 1997

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POST OFFICE BOX 655303

Temperature

(Signed Binary With Respect to 1/2 the

Applied Voltage Reference)

description

The TLC2543C and TLC2543I are 12-bit, switched-

capacitor,

successive-approximation,

analog-to-

digital converters. Each device has three control

inputs [chip select (CS), the input-output clock (I/O

CLOCK), and the address input (DATA INPUT)] and

is designed for communication with the serial port of

a host processor or peripheral through a serial 3-state

output. The device allows high-speed data transfers

from the host.

In addition to the high-speed converter and versatile control capability, the device has an on-chip 14-channel

multiplexer that can select any one of 11 inputs or any one of three internal self-test voltages. The

sample-and-hold function is automatic. At the end of conversion, the end-of-conversion (EOC) output goes high

to indicate that conversion is complete. The converter incorporated in the device 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

temperature range.

Copyright

© 1997, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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.

† Microcontroller Based Data Acquisition Using the TLC2543 12-bit Serial-Out ADC (SLAA012)

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AIN0

AIN1

AIN2

AIN3

AIN4

AIN5

AIN6

AIN7

AIN8

GND

EOC

I/O CLOCK

DATA INPUT

DATA OUT

CS

REF +

REF –

AIN10

AIN9

(TOP VIEW)

DB, DW, J, OR N PACKAGE

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910 11 12 13

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I/O CLOCK

DATA INPUT

DATA OUT

CS

AIN3

AIN4

AIN5

AIN6

AIN7

FK OR FN PACKAGE

(TOP VIEW)

REF +