TLV1549C, TLV1549I, TLV1549M

10-BIT ANALOG-TO-DIGITAL CONVERTERS

WITH SERIAL CONTROL

SLAS071C – JANUARY 1993 – REVISED MARCH 1995

1

POST OFFICE BOX 655303

3.3-V Supply Operation

10-Bit-Resolution Analog-to-Digital

Converter (ADC)

Inherent Sample and Hold Function

Total Unadjusted Error . . .

±1 LSB Max

On-Chip System Clock

Terminal Compatible With TLC1549 and

TLC1549x

CMOS Technology

description

The TLV1549C, TLV1549I, and TLV1549M are

10-bit,

switched-capacitor,

successive-

approximation, analog-to-digital converters. The

devices have two digital inputs and a 3-state

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

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

provide a three-wire interface to the serial port of

a host processor.

The sample-and-hold function is automatic. 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 free-air

temperature range.

The TLV1549C is characterized for operation from 0

°C to 70°C. The TLV1549I is characterized for operation

from –40

°C to 85°C. The TLV1549M is characterized for operation over the full military temperature range of

–55

°C to 125°C.

AVAILABLE OPTIONS

PACKAGE

TA

SMALL OUTLINE

(D)

CHIP CARRIER

(FK)

CERAMIC DIP

(JG)

PLASTIC DIP

(P)

0

°C to 70°C

TLV1549CD

—

—

TLV1549CP

–40

°C to 85°C

TLV1549ID

—

—

TLV1549IP

–55

°C to 125°C

—

TLV1549MFK

TLV1549MJG

—

† Interfacing the TLV1549 10-Bit Serial-Out ADC to Popular 3.3-V Microcontrollers (SLAA005)

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.

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.

1

2

3

4

8

7

6

5

REF +

ANALOG IN

REF –

GND

I/O CLOCK

DATA OUT

CS

D, JG, OR P PACKAGE

(TOP VIEW)

32 1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

NC

I/O CLOCK

NC

DATA OUT

NC

NC

ANALOG IN

NC

REF–

NC

FK PACKAGE

(TOP VIEW)

NC – No internal connection