Datasheet > 转换器 > 数字电位计> AD5207BRU100-REEL7

AD5207BRU100-REEL7

更新时间： 2024-11-24 22:47:31

品牌	Logo	应用领域
亚德诺 - ADI		转换器数字电位计电阻器光电二极管
页数	文件大小	规格书
16页	660K
描述
2-Channel, 256-Position Digital Potentiometer

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数据手册
替代型号

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AD5207BRU100-REEL7 数据手册

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2-Channel, 256-Position

Digital Potentiometer

AD5207

FEATURES

FUNCTIONAL BLOCK DIAGRAM

256-Position, 2-Channel

Potentiometer Replacement

10 kꢀ, 50 kꢀ, 100 kꢀ

Power Shut-Down, Less than 5 ꢁA

2.7 V to 5.5 V Single Supply

ꢂ2.7 V Dual Supply

3-Wire SPI-Compatible Serial Data Input

Midscale Preset During Power-On

SHDN

RDAC1 REGISTER

RDAC2 REGISTER

APPLICATIONS

LOGIC

POWER-

Mechanical Potentiometer Replacement

Stereo Channel Audio Level Control

Instrumentation: Gain, Offset Adjustment

Programmable Voltage-to-Current Conversion

Programmable Filters, Delays, Time Constants

Line Impedance Matching

RESET

AD5207

CLK

SDI

SDO

SERIAL INPUT REGISTER

DGND

Automotive Electronics Adjustment

The first two bits are address bits. The following eight bits are

the data bits that represent the 256 steps of the resistance value.

The reason for two address bits instead of one is to be compatible

with similar products such as AD8402 so that drop-in replacement

is possible. The address bit determines the corresponding VR

latch to be loaded with the data bits during the returned positive

edge of CS strobe. A serial data output pin at the opposite end

of the serial register allows simple daisy chaining in multiple

VR applications without additional external decoding logic.

GENERAL DESCRIPTION

The AD5207 provides dual channel, 256-position, digitally

controlled variable resistor (VR) devices that perform the same

electronic adjustment function as a potentiometer or variable

resistor. Each channel of the AD5207 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 register. The resistance between the wiper and either

end point of the fixed resistor varies linearly with respect to the

digital code transferred into the VR latch. The variable resistor

offers a completely programmable value of resistance, between

the A Terminal and the wiper or the B Terminal and the wiper.

The fixed A-to-B terminal resistance of 10 kΩ, 50 kΩ or 100 kΩ

has a 1% channel-to-channel matching tolerance with a nomi-

nal temperature coefficient of 500 ppm/°C. A unique switching

circuit minimizes the high glitch inherent in traditional switched

resistor designs and avoids any make-before-break or break-

before-make operation.

An internal reset block will force the wiper to the midscale posi-

tion during every power-up condition. The SHDN pin forces an

open circuit on the A Terminal and at the same time shorts the

wiper to the B Terminal, achieving a microwatt power shutdown

state. When SHDN is returned to logic high, the previous latch

settings put the wiper in the same resistance setting prior to

shutdown. The digital interface remains active during shutdown;

code changes can be made to produce new wiper positions when

the device is resumed from shutdown.

Each VR has its own VR latch, which holds its programmed

resistance value. These VR latches are updated from an internal

serial-to-parallel shift register, which is loaded from a standard

3-wire serial-input digital interface. Ten bits, to make up the

data word, are required and clocked into the serial input register.

The AD5207 is available in 1.1 mm thin TSSOP-14 package,

which is suitable for PCMCIA applications. All parts are guaran-

teed to operate over the extended industrial temperature range

of –40°C to +125°C.

REV. 0

Information furnished by Analog Devices is believed to be accurate and

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

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

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

Tel: 781/329-4700

Fax: 781/326-8703

www.analog.com

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AD5207BRU100-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD5207BRUZ100	ADI	类似代替	Dual, 256 Position, Digital Potentiometer

与AD5207BRU100-REEL7相关器件

型号	品牌	获取价格	描述	数据表
AD5207BRU10-REEL7	ADI	获取价格	2-Channel, 256-Position Digital Potentiometer
AD5207BRU10-REEL7	ROCHESTER	获取价格	DUAL 10K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO14, 1.
AD5207BRU50-REEL7	ADI	获取价格	2-Channel, 256-Position Digital Potentiometer
AD5207BRU50-REEL7	ROCHESTER	获取价格	DUAL 50K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO14, 1.
AD5207BRUZ10	ADI	获取价格	2-Channel, 256-Position Digital Potentiometer
AD5207BRUZ100	ADI	获取价格	Dual, 256 Position, Digital Potentiometer
AD5207BRUZ100-REEL7	ADI	获取价格	DUAL 100K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO14, 1
AD5207BRUZ10-REEL7	ADI	获取价格	DUAL 10K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO14, 1.
AD5207BRUZ10-RL7	ADI	获取价格	Dual, 256 Position, Digital Potentiometer
AD5207BRUZ10-RL7	ROCHESTER	获取价格	DUAL 10K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO14, 1.

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