Datasheet > 1654

1654

更新时间： 2024-01-30 01:45:04

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
16页	181K
描述
Dual 14-Bit Rail-to-Rail DAC in 16-Lead SSOP Package

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1654 数据手册

LTC1654

Dual 14-Bit Rail-to-Rail DAC

in 16-Lead SSOP Package

FEATURES

DESCRIPTIO

The LTC^®1654 is a dual, rail-to-rail voltage output, 14-bit

digital-to-analog converter (DAC). It is available in a

16-leadnarrowSSOPpackage,makingitthesmallestdual

14-bit DAC available. It includes output buffer amplifiers

and a flexible serial interface.

■

14-Bit Monotonic Over Temperature

Individually Programmable Speed/Power:

■

3µs Settling Time at 930µA

8.5µs Settling Time at 540µA

■

3V to 5V Single Supply Operation

■

Maximum Update Rate: 0.9MHz

Buffered True Rail-to-Rail Voltage Outputs

The LTC1654 has REFHI pins for each DAC that can be

driven up to V_CC. The output will swing from 0V to V_CCin

a gain of 1 configuration or V_CC/2 in a gain of 1/2 configu-

ration. It operates from a single 2.7V to 5.5V supply.

■

User Selectable Gain

Power-On Reset and Clear Function

■

Schmitt Trigger On Clock Input Allows Direct

The LTC1654 has two programmable speeds: a FAST and

SLOW mode with ±1LSB settling times of 3µs or 8.5µs

respectively and supply currents of 930µA and 540µA in

the two modes. The LTC1654 also has shutdown capabil-

ity, power-on reset and a clear function to 0V.

Optocoupler Interface

■

Smallest Dual 14-Bit DAC: 16-Lead Narrow

SSOP Package

APPLICATIO S

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

All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 5396245.

■

Digital Calibration

■

Industrial Process Control

■

Automatic Test Equipment

Offset/Gain Adjustment

Multiplying DAC

■

BLOCK DIAGRA

CS/LD

REFHI B

CONTROL

LOGIC

SCK

INPUT

LATCH

DAC

DAC B

SDI

OUT B

–

32-BIT

SHIFT

X /X

1/2

REFHI A

INPUT

LATCH

DAC

DAC A

–

OUT A

SDO

POWER-ON

RESET

CLR

X /X

1/2

1654 BD

REFLO B

REFLO A

1654fb

12 3 4 5 6 7...16

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