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AD5220BN50 PDF预览

AD5220BN50

更新时间: 2024-02-17 07:09:07
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
10页 266K
描述
Increment/Decrement Digital Potentiometer

AD5220BN50 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Active零件包装代码:DIP
包装说明:PLASTIC, DIP-8针数:8
Reach Compliance Code:unknown风险等级:5.3
Is Samacsys:N其他特性:REST 3 RESISTOR ARRAY VALUES ARE : 10000,50000 OHMS
标称带宽:0.65 kHz控制接口:INCREMENT/DECREMENT
转换器类型:DIGITAL POTENTIOMETERJESD-30 代码:R-PDIP-T8
JESD-609代码:e0长度:9.88 mm
湿度敏感等级:NOT APPLICABLE功能数量:1
位置数:128端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):NOT APPLICABLE认证状态:COMMERCIAL
电阻定律:LINEAR最大电阻容差:30%
最大电阻器端电压:3 V最小电阻器端电压:
座面最大高度:5.33 mm标称供电电压:3 V
表面贴装:NO标称温度系数:800 ppm/ °C
温度等级:INDUSTRIAL端子面层:TIN LEAD
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 APPLICABLE
标称总电阻:50000 Ω宽度:7.62 mm
Base Number Matches:1

AD5220BN50 数据手册

 浏览型号AD5220BN50的Datasheet PDF文件第2页浏览型号AD5220BN50的Datasheet PDF文件第3页浏览型号AD5220BN50的Datasheet PDF文件第4页浏览型号AD5220BN50的Datasheet PDF文件第5页浏览型号AD5220BN50的Datasheet PDF文件第6页浏览型号AD5220BN50的Datasheet PDF文件第7页 
Increment/Decrement  
Digital Potentiometer  
a
AD5220  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
128 Position  
Potentiometer Replacement  
10 k, 50 k, 100 k⍀  
Very Low Power: 40 A Max  
Increment/Decrement Count Control  
V
DD  
CLK  
D
E
C
O
D
E
A
CS  
EN  
UP/  
DOWN  
CNTR  
7
W
B
APPLICATIONS  
U/D  
RS  
GND  
POR  
40  
Mechanical Potentiometer Replacement  
Remote Incremental Adjustment Applications  
Instrumentation: Gain, Offset Adjustment  
Programmable Voltage-to-Current Conversion  
Programmable Filters, Delays, Time Constants  
Line Impedance Matching  
H
AD5220  
+5V  
CS  
UP/DOWN  
Power Supply Adjustment  
U/D  
CLK  
GENERAL DESCRIPTION  
The AD5220 provides a single 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. A choice between  
bandwidth or power dissipation are available as a result of the  
wide selection of end-to-end terminal resistance values.  
INCREMENT  
AD5220  
Figure 1. Typical Push-Button Control Application  
UPCOUNT DETAIL  
The AD5220 contains a fixed resistor with a wiper contact that  
taps 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 con-  
stant resistance step size that is equal to the end-to-end resis-  
tance divided by the number of positions (e.g., RSTEP = 10 k/  
128 = 78 ). The variable resistor offers a true adjustable 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 k, 50 k, or 100 khas a nominal temperature coefficient  
of 800 ppm/°C.  
V
V
V
= 5.5V  
= 5.5V  
= 0V  
DD  
A
V
WB  
50mV/DIV  
B
f = 100kHz  
CLK  
5V/DIV  
Figure 2a. Stair-Step Increment Output  
The chip select CS, count CLK and U/D direction control  
inputs set the variable resistor position. These inputs that con-  
trol the internal UP/DOWN counter can be easily generated  
with mechanical or push button switches (or other contact closure  
devices). External debounce circuitry is required for the nega-  
tive-edge sensitive CLK pin. This simple digital interface elimi-  
nates the need for microcontrollers in front panel interface designs.  
V
V
V
= 5.5V  
= 5.5V  
= 0V  
COUNT  
DD  
00 v 3F v 00  
H
H
H
A
B
f = 60kHz  
V
WR  
The AD5220 is available in both surface mount (SO-8) and the  
8-lead plastic DIP package. For ultracompact solutions selected  
models are available in the thin µSOIC package. All parts are  
guaranteed to operate over the extended industrial temperature  
range of –40°C to +85°C. For 3-wire, SPI compatible inter-  
face applications, see the AD7376/AD8400/AD8402/AD8403  
products.  
f
= 60kHz  
CLK  
Figure 2b. Full-Scale Up/Down Count  
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  
© Analog Devices, Inc., 1998  

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