TLC2551, TLC2552, TLC2555

5 V, LOW POWER, 12-BIT, 400 KSPS,

SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTOPOWER DOWN

SLAS276 –MARCH 2000

1

POST OFFICE BOX 655303

SCLK up to 20 MHz

– TLC2551 – Single Channel Input

– TLC2552 – Dual Channels With

Autosweep

– TLC2555 – Single Channel With

Pseudo-Differential Input

– Operating Current : 3.5 mA

Autopower Down: 8

µA

PACKAGE TOP VIEW

TLC2551

1

2

3

4

8

7

6

5

CS

GND

AIN

SDO

FS

SCLK

1

2

3

4

8

7

6

5

CS/FS

GND

AIN0

SDO

SCLK

AIN1

TLC2552

1

2

3

4

8

7

6

5

CS/FS

GND

AIN(+)

SDO

SCLK

AIN(–)

TLC2555

description

The TLC2551/2552/2555 are a family of high performance, 12-bit, low power, miniature 1.5

µs, CMOS

analog-to-digital converters (ADC). The TLC255x family uses a 5 V supply. Devices are available with single,

dual, or single pseudo-differential inputs. The TLC2551 has a 3-state output chip select (CS), serial output clock

(SCLK), and serial data output (SDO) that provides a direct 3-wire interface to the serial port of most popular

host microprocessors (SPI interface). When interfaced with a DSP, a frame sync signal (FS) is used to indicate

the start of a serial data frame. The TLV2552/55 have a shared CS/FS terminal.

TLC2551/2/5 are designed to operate with very low power consumption. The power saving feature is further

enhanced with an autopower-down mode. This product family features a high-speed serial link to modern host

processors with SCLK up to 20 MHz. TLC255x family uses the SCLK as the conversion clock, thus providing

synchronous operation allowing a minimum conversion time of 1.5

µs using 20 MHz SCLK.

AVAILABLE OPTIONS

PACKAGED DEVICES

TA

8-MSOP

(DGK)

8-SOIC

(D)

TLC2551CDGK

0

°C to 70°C

TLC2552CDGK

TLC2555CDGK

TLC2551IDGK

TLC2551ID

–40

°C to 85°C

TLC2552IDGK

TLC2552ID

TLC2555IDGK

TLC2555ID

Copyright

© 2000, 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.