LTC2654IUF-L12PBF datasheet, PDF

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LTC2654IUF-L12PBF: DescriptionQuad 16-/12-Bit Rail-to-Rail DACs with 10ppm/Â°C Max Reference; File Size331KB，24 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC2654IUF-L12PBF Overview

Quad 16-/12-Bit Rail-to-Rail DACs with 10ppm/Â°C Max Reference

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FEATURES

LTC2654

Quad 16-/12-Bit Rail-to-Rail

DACs with 10ppm/°C

Max Reference

DESCRIPTION

The LTC

2654 is a family of quad 16-/12-bit rail-to-rail

DACs with integrated 10ppm/°C maximum reference . The

DACs have built-in high performance, rail-to-rail, output

buffers and are guaranteed monotonic. The LTC2654-L

has a full-scale output of 2.5V with the integrated refer-

ence and operates from a single 2.7V to 5.5V supply.

The LTC2654-H has a full-scale output of 4.096V with

the integrated reference and operates from a 4.5V to

5.5V supply. Each DAC can also operate with an external

reference, which sets the full-scale output to 2 times the

external reference voltage.

These DACs communicate via a SPI/MICROWIRE™ com-

patible 4-wire serial interface which operates at clock rates

up to 50MHz. The LTC2654 incorporates a power-on reset

circuit that is controlled by the PORSEL pin. If PORSEL

is tied to GND the DACs reset to zero-scale. If PORSEL is

tied to V

, the DACs reset to mid-scale.

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. SPI/MICROWIRE is a trademark of Linear Technology Corporation.

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

including 5396245, 6891433 and patent pending.

Precision Reference 10ppm/°C Max

Maximum INL Error: ±4LSB at 16-Bits

Low ±2mV (Max) Offset Error

Guaranteed Monotonic Over Temperature

Selectable Internal or External Reference

2.7V to 5.5V Supply Range (LTC2654-L)

Integrated Reference Buffers

Ultralow Crosstalk Between DACs (<3nV•s)

Power-on-Reset to Zero-Scale/Mid-Scale

Asynchronous DAC Update Pin

Tiny 20-Lead 4mm

4mm QFN and 16-Lead Narrow

SSOP Packages

APPLICATIONS

Mobile Communications

Process Control and Industrial Automation

Instrumentation

Automatic Test Equipment

Automotive

BLOCK DIAGRAM

REFCOMP

GND

REFLO

OUTA

DAC A

DAC D

OUTD

INL (LSB)

–1

–2

–3

CONTROL LOGIC

SCK

SDI

LDAC

32-BIT SHIFT REGISTER

CLR

DECODE

POWER-ON

RESET

PORSEL

SDO

–4

128

16384

32768

CODE

49152

65535

2654 TA01b

INTERNAL REFERENCE

REFIN/OUT

INL Curve

= 5V

OUTB

DAC B

DAC C

OUTC

CS/LD

2654 TA01a

2654f

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