LTC2609/LTC2619/LTC2629



26091929fb

Block Diagram

Description

Quad 16-/14-/12-Bit

Rail-to-Rail DACs with

bit,2.7Vto5.5Vrail-to-railvoltageoutputDACsina16-lead

SSOPpackage.Theyhavebuilt-inhighperformanceoutput

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 and load regulation in single-supply, volt-

age-output DACs.

LTC2609/LTC2619/LTC2629 operate in both the standard

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

rate of 400kHz).

The LTC2609/LTC2619/LTC2629 incorporate a power-on

resetcircuit.Duringpower-up,thevoltageoutputsriseless

than 10mV above zero-scale; after power-up, they stay at

zero-scale until a valid write and update take place. The

power-on reset circuit resets the LTC2609-1/LTC2619-1/

LTC2629-1 to mid-scale. The voltage outputs stay at mid-

scale until a valid write and update take place.

Differential Nonlinearity

(LTC2609)

Features

applications

n

Smallest Pin-Compatible Quad DACs:

LTC2609: 16 Bits

LTC2619: 14 Bits

LTC2629: 12 Bits

n

Guaranteed Monotonic Over Temperature

n

Separate Reference Inputs

n

27 Selectable Addresses

n

n

Wide 2.7V to 5.5V Supply Range

n

Low Power Operation: 250µA per DAC at 3V

n

Individual Channel Power Down to 1µA (Max)

n

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

n

Ultralow Crosstalk Between DACs (5µV)

n

LTC2609/LTC2619/LTC2629: Power-On Reset to

Zero-Scale

n

LTC2609-1/LTC2619-1/LTC2629-1: Power-On Reset

to Mid-Scale

n

Tiny 16-Lead Narrow SSOP Package

n

Mobile Communications

n

Process Control and Industrial Automation

n

Automatic Test Equipment and Instrumentation

INTERFACE

ADDRESS

DECODE

LOGIC

32-BIT SHIFT REGISTER

SDA

2609 BD

9

REFB

6

SCL

8

5

4

REFA

3

REFLO

2

GND

1

DAC A

DAC B

REFC

12

13

14

CA2

7

CA1

10

CA0

11

REFD

15

16

DAC D

DAC C

CONTROL

LOGIC

CODE

0

16384

32768

49152

65535

2609 G02

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

L

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

Technology Corporation. All other trademarks are the property of their respective owners.

Protected by U.S. Patents including 5396245. Patent pending.