AD5201

更新时间： 2024-02-15 02:02:29

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
16页	660K
描述
2-Channel, 256-Position Digital Potentiometer

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技术参数
数据手册

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AD5201 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	DIP	包装说明：	HERMETIC SEALED, CERAMIC, DIP-24
针数：	24	Reach Compliance Code：	not_compliant
ECCN代码：	3A001.A.2.C	HTS代码：	8542.39.00.01
风险等级：	5.74	Is Samacsys：	N
最大模拟输入电压：	5 V	最小模拟输入电压：	-5 V
最长转换时间：	50 µs	转换器类型：	ADC, SUCCESSIVE APPROXIMATION
JESD-30 代码：	R-CDIP-T24	JESD-609代码：	e0
最大线性误差 (EL)：	0.0122%	标称负供电电压：	-15 V
模拟输入通道数量：	1	位数：	12
功能数量：	1	端子数量：	24
最高工作温度：	125 °C	最低工作温度：	-55 °C
输出位码：	BINARY	输出格式：	SERIAL, PARALLEL, WORD
封装主体材料：	CERAMIC, METAL-SEALED COFIRED	封装代码：	DIP
封装等效代码：	DIP24,.6	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	5,+-15 V	认证状态：	Not Qualified
采样并保持/跟踪并保持：	SAMPLE	子类别：	Analog to Digital Converters
标称供电电压：	15 V	表面贴装：	NO
技术：	HYBRID	温度等级：	MILITARY
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	Base Number Matches：	1

AD5201 数据手册

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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