Datasheet > AD5222BR50

AD5222BR50

更新时间： 2024-11-28 22:47:31

品牌	Logo	应用领域
亚德诺 - ADI		电位器
页数	文件大小	规格书
10页	176K
描述
Increment/Decrement Dual Digital Potentiometer

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AD5222BR50 数据手册

Increment/Decrement

Dual Digital Potentiometer

AD5222

FEATURES

FUNCTIONAL BLOCK DIAGRAM

128-Position, 2-Channel

Potentiometer Replacement

10 k⍀, 50 k⍀, 100 k⍀, 1 M⍀

Very Low Power: 40 ␮A Max

؎2.7 V Dual Supply Operation or

2.7 V to 5.5 V Single Supply Operation

Increment/Decrement Count Control

AD5222

UP/DOWN

COUNTER

DECODE

U/D

POR

APPLICATIONS

MODE

DAC

SELECT

AND

Stereo Channel Audio Level Control

Mechanical Potentiometer Replacement

Remote Incremental Adjustment Applications

Instrumentation: Gain, Offset Adjustment

Programmable Voltage-to-Current Conversion

Line Impedance Matching

UP/DOWN

COUNTER

DECODE

DACSEL

CLK

ENABLE

GND

GENERAL DESCRIPTION

mechanical or push-button switches (or other contact closure

devices). This simple digital interface eliminates the need for

microcontrollers in front panel interface designs.

The AD5222 provides a dual channel, 128-position, digitally

controlled variable-resistor (VR) device. This device performs

the same electronic adjustment function as a potentiometer or

variable resistor. These products were optimized for instrument

and test equipment push-button applications. Choices between

bandwidth or power dissipation are available as a result of the

wide selection of end-to-end terminal resistance values.

The AD5222 is available in the surface-mount (SO-14) package.

For ultracompact solutions, selected models are available in the

thin TSSOP-14 package. All parts are guaranteed to operate

over the extended industrial temperature range of –40°C to

+85°C. For 3-wire, SPI-compatible interface applications, see

the AD5203/AD5204/AD5206, AD7376, and AD8400/AD8402/

AD8403 products.

The AD5222 contains two fixed resistors with wiper contacts that

tap the fixed resistor value at a point determined by a digitally

controlled up/down counter. The resistance between the wiper

and either end point of the fixed resistor provides a constant

resistance step size that is equal to the end-to-end resistance

divided by the number of positions (e.g., R_STEP= 10 kΩ/128 =

78 Ω). The variable resistor offers a true adjustable value of

resistance, between Terminal A and the wiper, or Terminal B

and the wiper. The fixed A-to-B terminal resistance of 10 kΩ,

50 kΩ, 100 kΩ, or 1 MΩ has a nominal temperature coefficient

of –35 ppm/°C.

U/D

CLK

INCREMENT

The chip select CS, count CLK and U/D direction control inputs

set the variable resistor position. The MODE determines whether

both VRs are incremented together or independently. With

MODE at logic zero, both wipers are incremented UP or DOWN

without changing the relative settings between the wipers. Also,

the relative ratio between the wipers is preserved if either wiper

reaches the end of the resistor array. In the independent MODE

(Logic 1) only the VR determined by the DACSEL pin is changed.

DACSEL (Logic 0) changes RDAC 1. These inputs, which con-

trol the internal up/down counter, can be easily generated with

DACSEL

MODE

GND

Figure 1. Typical Push-Button Control Application

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, nor for any infringements of patents or other rights of third parties

which 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

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

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AD5222BR50 替代型号

型号	品牌	替代类型	描述	数据表
AD5222BR10	ADI	类似代替	Increment/Decrement Dual Digital Potentiometer
AD5222BR1M	ADI	类似代替	Increment/Decrement Dual Digital Potentiometer

与AD5222BR50相关器件

型号	品牌	获取价格	描述	数据表
AD5222BRU10	ADI	获取价格	Increment/Decrement Dual Digital Potentiometer
AD5222BRU10	ROCHESTER	获取价格	2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO14, TSSOP-14
AD5222BRU100	ADI	获取价格	Increment/Decrement Dual Digital Potentiometer
AD5222BRU100	ROCHESTER	获取价格	2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO14, TSSOP-14
AD5222BRU100-REEL7	ROCHESTER	获取价格	2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO14, TSSOP-14
AD5222BRU10-REEL7	ROCHESTER	获取价格	2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO14, TSSOP-14
AD5222BRU1M	ADI	获取价格	Increment/Decrement Dual Digital Potentiometer
AD5222BRU1M	ROCHESTER	获取价格	2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO14, TSSOP-14
AD5222BRU1M-REEL7	ROCHESTER	获取价格	2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO14, TSSOP-14
AD5222BRU1M-REEL7	ADI	获取价格	Dual, Increment/Decrement Digital Potentiometer

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