Linear Technology DC934A - LTC2607 Dual 16-bit, I²C Vout DAC (req DC590) DC934A DC934A データシート

LTC2607/LTC2617/LTC2627



26071727fa

Block Diagram

Features

Description

16-/14-/12-Bit Dual Rail-to-Rail  

DACs with I

2

C Interface

The LTC

®

2607/LTC2617/LTC2627 are dual 16-, 14- and 

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

12-lead DFN package. 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  and  load  regulation  in  single-supply,  

voltage-output DACs.
The parts use a 2-wire, I

2

C compatible serial interface. The 

LTC2607/LTC2617/LTC2627 operate in both the standard 

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

of 400kHz). An asynchronous DAC update pin (LDAC) is 

also included.
The LTC2607/LTC2617/LTC2627 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 LTC2607-1/LTC2617-1/ 

LTC2627-1 to mid-scale. The voltage outputs stay at mid-

scale until a valid write and update takes place.

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 and 6891433. Patent Pending.

applications

n

  Smallest Pin-Compatible Dual DACs: 

n

n

n

  400kHz I

2

C Interface

n

  Wide 2.7V to 5.5V Supply Range

n

  Low Power Operation: 260µA per DAC at 3V

n

  Power Down to 1µA, Max

n

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

n

  Ultralow Crosstalk (30µV)

n

  Double-Buffered Data Latches

n

  Asynchronous DAC Update Pin

n

  LTC2607/LTC2617/LTC2627: Power-On Reset to  

Zero Scale

n

  LTC2607-1/LTC2617-1/LTC2627-1: Power-On Reset 

to Mid-Scale

n

  Tiny (3mm 

× 4mm) 12-Lead DFN Package

n

  Mobile Communications

n

  Process Control and Industrial Automation

n

  Instrumentation

n

  Automatic Test Equipment

9

8

11

10

5

6

2

1

4

3

2-WIRE INTERFACE

CA0

CA1

LDAC

SCL

SDA

REFLO

GND

REF

V

CC

CA2

32-BIT SHIFT REGISTER

INPUT REGISTER

INPUT REGISTER

DAC REGISTER

DAC REGISTER

7

12-/14-/16-BIT DAC

V

OUTB

12

12-/14-/16-BIT DAC

V

OUTA

2607 BD01a

CODE

0

16384

32768

49152

65535

DNL (LSB)

2607 BD01b

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

V

CC

 = 5V

V

REF

 = 4.096V