TLV5614

2.7-V TO 5.5-V 12-BIT 3-

µS QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS

WITH POWER DOWN

SLAS188 – SEPTEMBER 1998

1

POST OFFICE BOX 655303

or 9

µs Typ

Serial Interface

8 mW, Slow Mode – 5-V Supply

3.6 mW, Slow Mode – 3-V Supply

Input Voltage

and Analog Supplies)

applications

description

The TLV5614 is a quadruple 12-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 TLV5614 is

programmed with a 16-bit serial word comprised

of a DAC address, individual DAC control bits, and

a 12-bit DAC value. The device has provision for

two supplies: one digital supply for the serial

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

with the DACs operating on a 5 V supply. Of course, the digital and anlog supplies can be tied together.

The resistor string output voltage is buffered by a 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

makes 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 then DACs C and D.

The TLC5614 is implemented with a CMOS process and is available in a 16-terminal SOIC package. The

TLV5614C is characterized for operation from 0

°C to 70°C. The TLV5614I is characterized for operation from

–40

°C to 85°C.

Copyright

© 1998, 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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PD

LDAC

DIN

SCLK

CS

FS

DGND

REFINAB

OUTA

OUTB

OUTC

OUTD

REFINCD

AGND

(TOP VIEW)

D OR PW PACKAGE