LTC1669IMS8

更新时间： 2024-01-19 10:31:46

品牌	Logo	应用领域
凌特 - Linear		转换器光电二极管
页数	文件大小	规格书
12页	186K
描述
10-Bit Rail-to-Rail Micropower DAC with I2C Interface

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LTC1669IMS8 数据手册

LTC1669

10-Bit Rail-to-Rail

Micropower DAC with I²C Interface

DESCRIPTIO

FEATURES

The LTC^®1669 is a 10-bit voltage output DAC with true

buffered rail-to-rail output voltage capability. It operates

from a single supply with a range of 2.7V to 5.5V. The

reference for the DAC is selectable between the supply

voltage or an internal bandgap reference. Selecting the

internal bandgap reference will set the full-scale output

voltage range to 2.5V. Selecting the supply as the refer-

ence sets the output voltage range to the supply voltage.

■

Micropower 10-Bit DAC in SOT-23

■

Low Operating Current: 60µA

■

Ultralow Power Shutdown Mode: 12µA

■

2-Wire Serial Interface Compatible

with I²C^TM

■

Selectable Internal Reference or Ratiometric to V_CC

Maximum DNL Error: 0.75LSB

8 User Selectable Addresses (MSOP Package)

Single 2.7V to 5.5V Operation

Buffered True Rail-to-Rail Voltage Output

Power-On Reset

1.5V V_ILand 2.1V V_IHfor SDA and SCL

■

The part features a simple 2-wire serial interface compat-

ible with I²C that allows communication between many

devices. The internal data registers are double buffered to

allow for simultaneous update of several devices at once.

The DAC can be put in low current power-down mode for

use in power conscious systems.

^{Small 5-Lead SO}U^{T-23 and 8-Lead MSOP Packages}

APPLICATIO S

Power-on reset ensures the DAC output is at 0V when

power is initially applied, and all internal registers are

cleared. The LTC1669 is pin-for-pin compatible with the

LTC1663.

■

Digital Calibration

■

Offset/Gain Adjustment

■

Industrial Process Control

■

Automatic Test Equipment

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

I²C is a trademark of Philips Electronics N.V.

■

Arbitrary Function Generators

■

Battery-Powered Data Conversion Products

BLOCK DIAGRA

4 (5)

BANDGAP

1.25V

Differential Nonlinearity (DNL)

REFERENCE

1.0

REF

= V = 5V

0.8

0.6

REFERENCE

SELECT

= 25°C

0.4

0.2

10-BIT

DAC LATCH

–0.2

–0.4

–0.6

–0.8

–1.0

3 (8)

OUT

10-BIT BUFFERED V

DAC

OUT

COMMAND

LATCH

INPUT

LATCH

MSOP

PACKAGE

ONLY

(6)

(2)

(3)

AD0

AD1

AD2

768 896

1024

28 156 384 512 640

CODE

2-WIRE INTERFACE

1669 G02

SDA

SCL

GND

2 (7)

1669 BD

1 (1)

5 (4)

NOTE: PIN NUMBERS IN PARENTHESES REFER TO THE MSOP PACKAGE

1669f

12 3 4 5 6 7...12

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