LTC2605 datasheet, PDF - EEWORLD Datasheet

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LTC2605: DescriptionOctal 16-/14-/12-Bit Rail-to-Rail DACs in 16-Lead SSOP; File Size312KB，16 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC2605 Overview

Octal 16-/14-/12-Bit Rail-to-Rail DACs in 16-Lead SSOP

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LTC2605/LTC2615/LTC2625

Octal 16-/14-/12-Bit

Rail-to-Rail DACs in 16-Lead SSOP

DESCRIPTIO

The LTC

2605/LTC2615/LTC2625 are octal 16-, 14-

and 12-bit, 2.7V to 5.5V rail-to-rail voltage-output DACs in

16-lead narrow SSOP packages. They have built-in

high performance output buffers and are guaranteed

monotonic.

These parts establish new board-density benchmarks

for 16- and 14-bit DACs and advance performance

standards for output drive, crosstalk and load regulation

in single-supply, voltage-output multiples.

The parts use the 2-wire I

C compatible serial interface.

The LTC2605/LTC2615/LTC2625 operate in both the

standard mode (maximum clock rate of 100kHz) and the

fast mode (maximum clock rate of 400kHz).

The LTC2605/LTC2615/LTC2625 incorporate a power-on

reset circuit. During power-up, the voltage outputs rise

less than 10mV above zero scale; and after power-up, they

stay at zero scale until a valid write and update take place.

The power-on reset circuit resets the LTC2605-1/

LTC2615-1/LTC2625-1 to midscale. The voltage output

stays at midscale until a valid write and update

takes place.

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

All other trademarks are the property of their respective owners.

FEATURES

■

Smallest Pin-Compatible Octal DACs:

LTC2605: 16 Bits

LTC2615: 14 Bits

LTC2625: 12 Bits

Guaranteed Monotonic Over Temperature

400kHz I

C Interface

Wide 2.7V to 5.5V Supply Range

Low Power Operation: 250µA per DAC at 3V

Individual Channel Power-Down to 1µA, Max

Ultralow Crosstalk Between DACs (<10µV)

High Rail-to-Rail Output Drive (±15mA, Min)

Double-Buffered Digital Inputs

27 Selectable Addresses

LTC2605/LTC2615/LTC2625: Power-On Reset to

Zero Scale

LTC2605-1/LTC2615-1/LTC2625-1: Power-On Reset

to Midscale

Tiny 16-Lead Narrow SSOP Package

APPLICATIO S

■

Mobile Communications

Process Control and Industrial Automation

Instrumentation

Automatic Test Equipment

BLOCK DIAGRA

GND

OUT A

DAC A

16 V

DAC H

15 V

OUT H

OUT B

DAC B

DAC G

14 V

OUT G

DNL (LSB)

OUT C

DAC C

DAC F

13 V

OUT F

OUT D

DAC D

DAC E

12 V

OUT E

REF

32-BIT SHIFT REGISTER

CA0

CA2

CA1

2-WIRE INTERFACE

SCL

2605/15/25 BD

SDA

Differential Nonlinearity (LTC2605)

1.0

0.8

0.6

0.4

0.2

–0.2

–0.4

–0.6

–0.8

–1.0

16384

32768

CODE

49152

65535

2605 G02

= 5V

REF

= 4.096V

2605f

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