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AD5228BUJZ100-RL7 PDF预览

AD5228BUJZ100-RL7

更新时间： 2024-01-14 05:58:00
品牌 Logo 应用领域
亚德诺 - ADI 转换器电位器数字电位计电阻器光电二极管PC
页数 文件大小 规格书
20页 341K
描述
32-Position Manual Up/Down Control Potentiometer

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AD5228BUJZ100-RL7 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：VSSOP,针数：8
Reach Compliance Code：unknown风险等级：5.79
标称带宽：0.05 kHz控制接口：PUSH-BUTTON
转换器类型：DIGITAL POTENTIOMETERJESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：2.9 mm
湿度敏感等级：1功能数量：1
位置数：32端子数量：8
最高工作温度：105 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：VSSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：COMMERCIAL
电阻定律：LINEAR最大电阻容差：20%
最大电阻器端电压：5.5 V最小电阻器端电压：
座面最大高度：1 mm标称供电电压：3 V
表面贴装：YES标称温度系数：35 ppm/ °C
温度等级：INDUSTRIAL端子面层：MATTE TIN
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
标称总电阻：100000 Ω宽度：1.6 mm
Base Number Matches：1

AD5228BUJZ100-RL7 数据手册

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32-Position Manual Up/Down Control  
Potentiometer  
AD5228  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
32-position digital potentiometer  
10 kΩ, 50 kΩ, 100 kΩ end-to-end terminal resistance  
Simple manual up/down control  
Self-contained, requires only 2 pushbutton tactile switches  
Built-in adaptive debouncer  
Discrete step-up/step-down control  
D
AD5228  
UP/DOWN  
E
CONTROL  
LOGIC  
V
DD  
C
O
D
E
A
R1 R2  
W
B
DISCRETE  
STEP/AUTO  
SCAN DETECT  
Autoscan up/down control with 4 steps per second  
Pin-selectable zero-scale/midscale preset  
Low potentiometer mode tempco, 5 ppm/°C  
Low rheostat mode tempco, 35 ppm/°C  
Digital control compatible  
PUSH-UP  
BUTTON  
PU  
PD  
ADAPTIVE  
DEBOUNCER  
ZERO- OR MID-  
SCALE PRESET  
PUSH-DOWN  
BUTTON  
PRE  
GND  
Ultralow power, IDD = 0.4 µA typ and 3 µA max  
Low operating voltage, 2.7 V to 5.5 V  
Automotive temperature range, −40°C to +105°C  
Compact thin SOT-23-8 (2.9 mm × 3 mm) Pb-free package  
Figure 1.  
The AD5228 can increment or decrement the resistance in  
discrete steps or in autoscan mode. When the or button  
PU PD  
is pressed briefly (no longer than 0.6 s), the resistance of the  
AD5228 changes by one step. When the or button is held  
APPLICATIONS  
Mechanical potentiometer and trimmer replacements  
LCD backlight, contrast, and brightness controls  
Digital volume control  
Portable device-level adjustments  
Electronic front panel-level controls  
Programmable power supply  
PU PD  
continuously for more than a second, the device activates the  
autoscan mode and changes four resistance steps per second.  
The AD5228 can also be controlled digitally; its up/down  
features simplify microcontroller usage. The AD5228 is available  
in a compact thin SOT-23-8 (TSOT-8) package. The part is  
guaranteed to operate over the automotive temperature range of  
−40°C to +105°C.  
GENERAL DESCRIPTION  
The AD5228 is Analog Devices’ latest 32-step-up/step-down  
control digital potentiometer emulating mechanical potenti-  
ometer operation1. Its simple up/down control interface allows  
manual control with just two external pushbutton tactile  
switches. The AD5228 is designed with a built-in adaptive  
debouncer that ignores invalid bounces due to contact bounce  
commonly found in mechanical switches. The debouncer is  
adaptive, accommodating a variety of pushbutton tactile  
switches that generally have less than 10 ms of bounce time  
during contact closures. When choosing the switch, the user  
should consult the timing specification of the switch to ensure  
its suitability in an AD5228 application.  
The AD5228’s simple interface, small footprint, and very low  
cost enable it to replace mechanical potentiometers and  
trimmers with typically 3× improved resolution, solid-state  
reliability, and faster adjustment, resulting in considerable cost  
saving in end users’ systems.  
Users who consider EEMEM potentiometers should refer to the  
recommendations in the Applications section.  
Table 1. Truth Table  
PU  
PD  
Operation1  
0
0
1
1
0
1
0
1
RWB Decrement  
RWB Increment  
RWB Decrement  
RWB Does Not Change  
1RWA increments if RWB decrements and vice versa.  
1 The terms digital potentiometer and RDAC are used interchangeably.  
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 that may result from its use.  
Specifications subject to change without notice. No license is granted by implication  
or otherwise under any patent or patent rights of Analog Devices. Trademarks and  
registered trademarks are the property of their respective owners.  
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  
© 2004 Analog Devices, Inc. All rights reserved.  
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