ltc2631-z Linear Technology Corporation, ltc2631-z Datasheet

ltc2631-z

Manufacturer Part Number

ltc2631-z

Description

Single 12-/10-/8-bit I 2c Vout Dacs With Bidirectional Reference

Manufacturer

Linear Technology Corporation

Datasheet

1.LTC2631-Z.pdf (28 pages)

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FEATURES

APPLICATIONS

BLOCK DIAGRAM

Integrated Precision Reference

2.5V Full Scale 10ppm/°C (LTC2631-L)

4.096V Full Scale 10ppm/°C (LTC2631-H)

Maximum INL Error: 1 LSB (LTC2631A-12)

Bidirectional Reference: Input or 10ppm/°C Output

400 kHz I

9 Selectable Addresses (LTC2631-Z)

Low Noise (0.7mV

Guaranteed Monotonic Over Temperature

2.7V to 5.5V Supply Range (LTC2631-L)

Low Power Operation: 180μA at 3V

Power Down to 1.8μA Maximum (C and I Grades)

Power-On Reset to Zero or Midscale Options

Double-Buffered Data Latches

Guaranteed Operation From –40°C to 125°C (H-Grade)

8-Lead TSOT-23 (ThinSOT™) Package

Mobile Communications

Process Control and Industrial Automation

Automatic Test Equipment

Portable Equipment

Automotive

Optical Networking

SDA

CA0

SCL

C™ Interface

INTERFACE

ADDRESS

DECODE

P-P

, 0.1Hz to 200kHz)

INPUT

DECODE LOGIC

CONTROL

(LTC2631-M)

REFERENCE

INTERNAL

DAC

RESISTOR

SWITCH

DIVIDER

DACREF

GND

DAC

REF

DESCRIPTION

The LTC

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

reference in an 8-lead TSOT-23 package. It has a rail-to-rail

output buffer that is guaranteed monotonic.

The LTC2631-L has a full-scale output of 2.5V, and oper-

ates from a single 2.7V to 5.5V supply. The LTC2631-H

has a full-scale output of 4.096V, and operates from a 4.5V

to 5.5V supply. A 10 ppm/°C reference output is available

at the REF pin.

Each DAC can also operate in External Reference mode,

in which a voltage supplied to the REF pin sets the full-

scale output.

The LTC2631 DACs use a 2-wire, I

interface. The LTC2631 operates in both the standard

mode (clock rate of 100kHz) and the fast mode (clock

rate of 400kHz).

The LTC2631 incorporates a power-on reset circuit. Op-

tions are available for Reset to Zero Scale or Reset to

Midscale after power-up.

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

ThinSOT are 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.

REF_SEL

OUT

2631 TA01

Bidirectional Reference

2631 is a family of 12-, 10-, and 8-bit voltage-

Single 12-/10-/8-Bit I

Integral Nonlinearity (LTC2631A-LM12)

–0.5

–1.0

1.0

0.5

OUT

= 2.5V

= 3V

1024

DACs with

CODE

2048

C-compatible serial

LTC2631

3072

2631 TA01b

C and

4095

2631fa

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