LTC2630

1

2630f

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Single 12-/10-/8-Bit Rail-to-

Rail DACs with Integrated

Reference in SC70

output DACs with an integrated, high-accuracy, low-drift

reference in a 6-lead SC70 package. It has a rail-to-rail

output buffer and is guaranteed monotonic.

The LTC2630-L has a full-scale output of 2.5V, and

operates from a single 2.7V to 5.5V supply. The

LTC2630-H has a full-scale output of 4.096V, and operates

from a 4.5V to 5.5V supply. Each DAC can also operate in

supply as reference mode, which sets the full-scale output

to the supply voltage.

The parts use a simple SPI/MICROWIRE™ compatible

3-wire serial interface which operates at clock rates up

to 50MHz.

The LTC2630 incorporates a power-on reset circuit. Op-

tions are available for reset to zero or reset to midscale

after power-up.

Integral Nonlinearity (LTC2630A-LZ12)

2.5V Full Scale 10ppm/°C (LTC2630-L)

4.096V Full Scale 10ppm/°C (LTC2630-H)

DAC

REGISTER

RESISTOR

DIVIDER

INTERNAL

REFERENCE

INPUT

REGISTER

24-BIT

SHIFT

REGISTER

DAC

CONTROL

DECODE LOGIC

CS/LD

GND

DACREF

2630 BD

SCK

SDI

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

All other trademarks are the property of their respective owners. Protected by U.S. Patents

including 5396245, 5859606, 6891433 and 6937178.

CODE

0

0

0.5

4095

2630 TA03

–0.5

–1.0

1024

2048

3072

1.0