1

LTC1654

1654fb

Dual 14-Bit Rail-to-Rail DAC

in 16-Lead SSOP Package

3

µs Settling Time at 930µA

8.5

µs Settling Time at 540µA

Optocoupler Interface

SSOP Package

The LTC

digital-to-analog converter (DAC). It is available in a

16-lead narrow SSOP package, making it the smallest dual

14-bit DAC available. It includes output buffer amplifiers

and a flexible serial interface.

The LTC1654 has REFHI pins for each DAC that can be

ration. It operates from a single 2.7V to 5.5V supply.

The LTC1654 has two programmable speeds: a FAST and

SLOW mode with

±1LSB settling times of 3µs or 8.5µs

respectively and supply currents of 930

µA and 540µA in

the two modes. The LTC1654 also has shutdown capabil-

ity, power-on reset and a clear function to 0V.

■

Industrial Process Control

DAC B

1654 BD

REFHI B

REFHI A

–

+

POWER-ON

RESET

DAC A

REFLO A

REFLO B

–

+

INPUT

LATCH

CONTROL

LOGIC

CS/LD

SCK

SDO

CLR

SDI

INPUT

LATCH

DAC

REGISTER

32-BIT

SHIFT

REGISTER

DAC

REGISTER

FEATURES

DESCRIPTIO

APPLICATIO S

BLOCK DIAGRA

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 5396245.