Linear Technology LTC2602CMS8, Dual 16-Bit Rail-to-Rail Vout DAC (req DC590) DC778A DC778A 数据表

1

LTC2602/LTC2612/LTC2622

2602fa

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

All other trademarks are the property of their respective owners.

V

OUT A

REF

CS/LD

SCK

V

OUT B

GND

V

CC

SDI

2602 BD01

8

1

2

4

3

5

7

6

16-BIT

DAC A

16-BIT

DAC B

DECODE

CONTROL

LOGIC

24-BIT SHIFT REGISTER

REGISTER

REGISTER

REGISTER

REGISTER

The LTC

®

2602/LTC2612/LTC2622 are dual 16-,14- and

12-bit, 2.5V-to-5.5V rail-to-rail voltage-output DACs, in a
tiny 8-lead MSOP package. They have built-in high per-
formance output buffers and are guaranteed monotonic.

These parts establish advanced performance standards
for output drive, crosstalk and load regulation in single-
supply, voltage output multiples.

The parts use a simple SPI/MICROWIRE™ compatible
3-wire serial interface which can be operated at clock
rates up to 50MHz.

The LTC2602/LTC2612/LTC2622 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.

■

■

■

Wide 2.5V to 5.5V Supply Range

■

Low Power Operation: 300

µA per DAC at 3V

■

Individual Channel Power-Down to 1

µA, Max

■

Ultralow Crosstalk between DACs (30

µV)

■

High Rail-to-Rail Output Drive (

±15mA)

■

Double-Buffered Data Latches

■

Pin-Compatible 10-Bit Version (LTC1661)

■

Tiny 8-Lead MSOP Package

■

Mobile Communications

■

Process Control and Industrial Automation

■

Instrumentation

■

Automatic Test Equipment

CODE

0

16384

32768

49152

65535

ERROR (LSB)

2602 TA01

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

Dual 16-/14-/12-Bit

Rail-to-Rail DACs in 8-Lead MSOP