Datasheet > LTC1329-50_15

LTC1329-50_15

更新时间： 2024-01-24 12:16:29

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
8页	228K
描述
Micropower 8-Bit Current Output D/A Converter

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中文翻译

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数据手册

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LTC1329-50_15 数据手册

LTC1329-10/

LTC1329-50/LTC1329A-50

Micropower 8-Bit Current

Output D/A Converter

FEATURES

DESCRIPTION

The LTC^®1329-10/LTC1329-50/LTC1329A-50 are

micropower 8-bit current output D/A converters (DACs)

with an output range of 0µA to 10µA for the LTC1329-10

and 0µA to 50µA for the LTC1329-50/LTC1329A-50. The

DAC current output can be biased from –15V to 2V or

–15Vto2.5Vin3.3Vand5Vsystems,respectively.Supply

current is only 95µA for the LTC1329-50/LTC1329A-50

and 75µA for LTC1329-10. A shutdown mode drops the

supply current to 0.2µA.

■

Guaranteed Precision Full-Scale DAC Output

Current at 25°C:

LTC1329A-50

LTC1329-10

LTC1329-50

50µA ±1%

10µA ±3%

50µA ±3%

■

Wide Output Voltage DC Compliance: –15V to 2.5V

Wide Supply Range: 2.7V ≤ V_CC≤ 6.5V

Supply Current in Shutdown: 0.2µA

Low Supply Current: 75µA for LTC1329-10,

95µA for LTC1329-50/LTC1329A-50

Available in 8-Pin SO

The LTC1329 can communicate with external circuitry by

using one of three interface modes: standard 3-wire serial

mode and two pulse modes. Upon power-up, the internal

counter resets to 1000 0000B, the DAC output assumes

midrange and the chip is configured in 3-wire or pulse

mode depending on the signal level at CS.

■

Triple Mode^TMInterface Modes

1. Standard 3-Wire Mode

2. Pulse Mode 1-Wire Interface: Increment-Only

3. Pulse Mode 2-Wire Interface: Increment/Decrement

Can Read Back the 8-Bit DAC Value in 3-Wire Mode

DAC Powers Up at Midrange

■

In3-wiremode, thesystemMPUcanseriallytransfer8-bit

data to and from the LTC1329. In pulse mode, the upper

six bits of the DAC output can be programmed for incre-

ment-only (1-wire interface) or increment/decrement

(2-wire interface) operation depending on the signal level

at D_IN.

DAC Contents Are Retained in Shutdown

APPLICATIONS

■

LCD Contrast Control

Backlight Brightness Control

Battery Charger Current/Voltage Adjustment

Power Supply Voltage Adjustment

LTC1329 is available in 8-pin SO packages.

■

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

■

Triple Mode is a trademark of Linear Technology Corporation.

■

Trimmer Pot Elimination

TYPICAL APPLICATION

Digitally Controlled LCD Bias Generator

L1*

100µH

1N4148

200k

0.1µF

47Ω

OUT

SW1

LIM

LT^®1173

GND

47µF

MPU

(e.g., 8051)

LTC1329-50

SW2

SHDN

CLK

GND

4.7µF

10.1k

P1.2

1N5818

P1.1

P1.0

220k

22µF

*GOWANDA GA10-103K OR

COILTRONICS CTX100-4

OUT

–22V at 40mA

1329 TA01

12 3 4 5 6 7 8

中文翻译

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与LTC1329-50_15相关器件

型号	品牌	获取价格	描述	数据表
LTC1329A-50	Linear	获取价格	Micropower 8-Bit Current Output D/A Converter
LTC1329A-50_15	Linear	获取价格	Micropower 8-Bit Current Output D/A Converter
LTC1329ACS8-50	Linear	获取价格	Micropower 8-Bit Current Output D/A Converter
LTC1329ACS8-50#PBF	Linear	获取价格	暂无描述
LTC1329ACS8-50#TR	Linear	获取价格	LTC1329 - Micropower 8-Bit Current Output D/A Converter; Package: SO; Pins: 8; Temperature
LTC1329CS8-10	Linear	获取价格	Micropower 8-Bit Current Output D/A Converter
LTC1329CS8-10#TRPBF	Linear	获取价格	LTC1329 - Micropower 8-Bit Current Output D/A Converter; Package: SO; Pins: 8; Temperature
LTC1329CS8-50	Linear	获取价格	Micropower 8-Bit Current Output D/A Converter
LTC1329CS8-50#PBF	Linear	获取价格	暂无描述
LTC1329CS8-50#TR	Linear	获取价格	LTC1329 - Micropower 8-Bit Current Output D/A Converter; Package: SO; Pins: 8; Temperature

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