TLC540I, TLC541I

8-BIT ANALOG-TO-DIGITAL CONVERTERS

WITH SERIAL CONTROL AND 11 INPUTS

SLAS065A – OCTOBER 1983 – REVISED MARCH 1995

1

POST OFFICE BOX 655303

Operation

MC145040 and National Semiconductor

ADC0811. TLC540 is Capable of Higher

Speed

with TLC1540 Family of 10-Bit A/D

Converters

PARAMETER

TLC540

TLC541

Channel Acquisition Sample Time

Conversion Time (Max)

Samples per Second (Max)

Power Dissipation (Max)

2

µs

9

µs

75 x 103

12.5 mW

3.6

µs

17

µs

40 x 103

12.5 mW

description

The TLC540 and TLC541 are CMOS A / D

converters built around an 8-bit switched-

capacitor

successive-approximation

A/D

converters. They are designed for serial interface

to a microprocessor or peripheral via a 3-state

output with up to four control inputs, including

independent SYSTEM CLOCK, I/O CLOCK, chip

select (CS), and ADDRESS INPUT. A 4-MHz

system clock for the TLC540 and a 2.1-MHz

system clock for the TLC541 with a design that

includes simultaneous read/write operation allow high-speed data transfers and sample rates of up to

75,180samples per second for the TLC540 and 40,000 samples per second for the TLC541. In addition to the

high-speed converter and versatile control logic, there is an on-chip 12-channel analog multiplexer that can be

used to sample any one of 11 inputs or an internal self-test voltage, and a sample-and-hold that can operate

automatically or under microprocessor control. Detailed information on interfacing to most popular

microprocessors is readily available from the factory.

AVAILABLE OPTIONS

PACKAGE

TA

SO PLASTIC DIP

(DW)

PLASTIC DIP

(N)

CHIP CARRIER

(FN)

–40

°C to 85°C

—

TLC541IDW

TLC540IN

TLC541IN

TLC540IFN

TLC541IFN

–55

°C to 125°C

—

TLC541MN

—

Copyright

© 1995, 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.

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11

INPUT A0

INPUT A1

INPUT A2

INPUT A3

INPUT A4

INPUT A5

INPUT A6

INPUT A7

INPUT A8

GND

SYSTEM CLOCK

I/O CLOCK

ADDRESS INPUT

DATA OUT

CS

REF +

REF –

INPUT A10

INPUT A9

DW OR N PACKAGE

(TOP VIEW)

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2

1 20 19

910 11 12 13

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5

6

7

8

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17

16

15

14

I/O CLOCK

ADDRESS INPUT

DATA OUT

CS

REF +

INPUT A3

INPUT A4

INPUT A5

INPUT A6

INPUT A7

FN PACKAGE

(TOP VIEW)