AD7376ARU10

更新时间： 2024-11-25 23:16:15

品牌	Logo	应用领域
亚德诺 - ADI		数字电位计
页数	文件大小	规格书
12页	338K
描述
+-15 V Operation Digital Potentiometer

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AD7376ARU10 数据手册

؎15 V Operation

Digital Potentiometer

AD7376*

FUNCTIO NAL BLO CK D IAGRAM

FEATURES

128 Position

Potentiom eter Replacem ent

10 k⍀, 50 k⍀, 100 k⍀, 1 M⍀

Pow er Shutdow n: Less than 1 ␮A

3-Wire SPI Com patible Serial Data Input

+5 V to +30 V Single Supply Operation

؎5 V to ؎15 V Dual Supply Operation

Midscale Preset

AD7376

SDO

SDI

7-BIT

SERIAL

7-BIT

LATCH

SHDN

CLK

APPLICATIONS

Mechanical Potentiom eter Replacem ent

Instrum entation: Gain, Offset Adjustm ent

Program m able Voltage-to-Current Conversion

Program m able Filters, Delays, Tim e Constants

Line Im pedance Matching

GND

SHDN

to an end-to-end open circuit condition on the A terminal and

shorts the wiper to the B terminal, achieving a microwatt power

shutdown state. When shutdown is returned to logic high, the

previous latch settings put the wiper in the same resistance

setting prior to shutdown as long as power to V_DDis not re-

moved. T he digital interface is still active in shutdown so that

code changes can be made that will produce a new wiper posi-

tion when the device is taken out of shutdown.

Pow er Supply Adjustm ent

GENERAL D ESCRIP TIO N

T he AD7376 provides a single channel, 128-position digitally-

controlled variable resistor (VR) device. T his device performs the

same electronic adjustment function as a potentiometer or vari-

able resistor. T hese products were optimized for instrument and

test equipment applications where a combination of high voltage

with a choice between bandwidth or power dissipation are avail-

able as a result of the wide selection of end-to-end terminal resis-

tance values. T he AD7376 contains a fixed resistor with a wiper

contact that taps the fixed resistor value at a point determined by

a digital code loaded into the SPI-compatible serial-input regis-

ter. T he resistance between the wiper and either endpoint of the

fixed resistor varies linearly with respect to the digital code trans-

ferred into the VR latch. T he variable resistor offers a completely

programmable value of resistance between the A terminal and the

wiper or the B terminal and the wiper. T he fixed A to B terminal

resistance of 10 kΩ, 50 kΩ, 100 kΩ or 1 MΩ has a nominal tem-

perature coefficient of –300 ppm/°C.

T he AD7376 is available in both surface mount (SOL-16) and

the 14-lead plastic DIP package. For ultracompact solutions

selected models are available in the thin T SSOP package. All

parts are guaranteed to operate over the extended industrial

temperature range of –40°C to +85°C. For operation at lower

supply voltages (+3 V to +5 V), see the AD8400/AD8402/

AD8403 products.

SDI

(DATA IN)

t_DS

t_DH

SDO

(DATA OUT)

t_{PD_MAX}

t_CH

t_CS1

CLK

T he VR has its own VR latch which holds its programmed resis-

tance value. T he VR latch is updated from an internal serial-to-

parallel shift register which is loaded from a standard 3-wire

serial-input digital interface. Seven data bits make up the data

word clocked into the serial data input register (SDI). Only the

last seven bits of the data word loaded are transferred into the

7-bit VR latch when the CS strobe is returned to logic high. A

serial data output pin (SDO) at the opposite end of the serial

without additional external decoding logic.

t_CSH0

t_CL

t_CSH

t_CSS

t_CSW

t_S

OUT

؎1 LSB ERROR BAND

؎1 LSB

Figure 1. Detail Tim ing Diagram

T he reset (RS) pin forces the wiper to the midscale position by

loading 40_Hinto the VR latch. T he SHDN pin forces the resistor

T he last seven data bits clocked into the serial input register will

be transferred to the VR 7-bit latch when CS returns to logic

high. Extra data bits are ignored.

*Patent Number: 5495245

REV. 0

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.

Tel: 781/ 329-4700

Fax: 781/ 326-8703

World Wide Web Site: http:/ / w w w .analog.com

12 3 4 5 6 7...12

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AD7376ARU10 替代型号

型号	品牌	替代类型	描述	数据表
AD7376ARUZ10-R7	ADI	完全替代	128-Position Digital Potentiometer
AD7376ARUZ10	ADI	完全替代	128-Position Digital Potentiometer

与AD7376ARU10相关器件

型号	品牌	获取价格	描述	数据表
AD7376ARU100	ADI	获取价格	+-15 V Operation Digital Potentiometer
AD7376ARU100-REEL7	ADI	获取价格	IC 100K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO14, TSS
AD7376ARU10-REEL	ADI	获取价格	IC 10K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO14, MO-1
AD7376ARU1M	ADI	获取价格	+-15 V Operation Digital Potentiometer
AD7376ARU50	ADI	获取价格	+-15 V Operation Digital Potentiometer
AD7376ARU50-REEL7	ADI	获取价格	IC 50K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO14, MO-1
AD7376ARUZ10	ADI	获取价格	128-Position Digital Potentiometer
AD7376ARUZ100	ADI	获取价格	128-Position Digital Potentiometer
AD7376ARUZ100-R7	ADI	获取价格	128-Position Digital Potentiometer
AD7376ARUZ10-R7	ADI	获取价格	128-Position Digital Potentiometer

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