TLV5627C, TLV5627I

2.7-V TO 5.5-V 8-BIT 4-CHANNEL DIGITAL-TO-ANALOG CONVERTERS

WITH POWER DOWN

SLAS232 – JUNE1999

1

POST OFFICE BOX 655303

of 3

µs or 9 µs Typ

Serial Interface

7 mW, Slow Mode – 5-V Supply

3 mW, Slow Mode – 3-V Supply

and Analog Supplies)

applications

description

The TLV5627 is a four channel, 8-bit voltage

output digital-to-analog converter (DAC) with a

flexible 4-wire serial interface. The 4-wire serial

interface allows glueless interface to TMS320,

SPI, QSPI, and Microwire serial ports. The

TLV5627 is programmed with a 16-bit serial word

comprised of a DAC address, individual DAC

control bits, and an 8-bit DAC value.

The device has provision for two supplies: one

digital supply for the serial interface (via pins

can be any value between 2.7 V and 5.5 V. The dual supplies allow a typical application where the DAC will be

operating on a 5-V supply. The digital and analog supplies can be tied together.

The resistor string output voltage is buffered by an x2 gain rail-to-rail output buffer. The buffer features a

Class AB output stage to improve stability and reduce settling time. A rail-to-rail output stage and a power-down

mode make it ideal for single voltage, battery based applications. The settling time of the DAC is programmable

to allow the designer to optimize speed versus power dissipation. The settling time is chosen by the control bits

within the 16-bit serial input string. A high-impedance buffer is integrated on the REFINAB and REFINCD

terminals to reduce the need for a low source impedance drive to the terminal. REFINAB and REFINCD allow

DACs A and B to have a different reference voltage than DACs C and D.

The device, implemented with a CMOS process, is available in 16-terminal SOIC and TSSOP packages. The

TLV5627C is characterized for operation from 0

°C to 70°C. The TLV5627I is characterized for operation from

–40

°C to 85°C.

Copyright

© 1999, 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.

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16

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9

PD

LDAC

DIN

SCLK

CS

FS

DGND

REFINAB

OUTA

OUTB

OUTC

OUTD

REFINCD

AGND

(TOP VIEW)

D OR PW PACKAGE