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AD5252BRU100-RL7 PDF预览

AD5252BRU100-RL7

更新时间: 2024-02-17 07:32:02
品牌 Logo 应用领域
亚德诺 - ADI 转换器电位器数字电位计存储电阻器光电二极管
页数 文件大小 规格书
28页 1181K
描述
Dual 64-and 256-Position I2C Nonvolatile Memory Digital Potentiometers

AD5252BRU100-RL7 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:TSSOP
包装说明:TSSOP,针数:14
Reach Compliance Code:unknown风险等级:5.84
Is Samacsys:N其他特性:NONVOLATILE MEMORY; DEVICE SUPPORTS DUAL SUPPLY OPERATION
标称带宽:0.04 kHz控制接口:2-WIRE SERIAL
转换器类型:DIGITAL POTENTIOMETERJESD-30 代码:R-PDSO-G14
JESD-609代码:e0长度:5 mm
湿度敏感等级:1标称负供电电压:-2.5 V
功能数量:2位置数:256
端子数量:14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:TSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):240
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:2.75 V
最小电阻器端电压:-2.25 V座面最大高度:1.2 mm
标称供电电压:2.5 V表面贴装:YES
技术:CMOS标称温度系数:650 ppm/ °C
温度等级:INDUSTRIAL端子面层:TIN LEAD
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:30
标称总电阻:100000 Ω宽度:4.4 mm
Base Number Matches:1

AD5252BRU100-RL7 数据手册

 浏览型号AD5252BRU100-RL7的Datasheet PDF文件第2页浏览型号AD5252BRU100-RL7的Datasheet PDF文件第3页浏览型号AD5252BRU100-RL7的Datasheet PDF文件第4页浏览型号AD5252BRU100-RL7的Datasheet PDF文件第5页浏览型号AD5252BRU100-RL7的Datasheet PDF文件第6页浏览型号AD5252BRU100-RL7的Datasheet PDF文件第7页 
Dual 64-and 256-Position I2C Nonvolatile  
Memory Digital Potentiometers  
AD5251/AD5252  
White LED brightness adjustment  
FEATURES  
AD5251: Dual 64-position resolution  
AD5252: Dual 256-position resolution  
1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ  
Nonvolatile memory1 stores wiper setting w/write protection  
Power-on refreshed with EEMEM settings in 300 µs typ  
EEMEM rewrite time = 540 µs typ  
RF base station power amp bias control  
Programmable gain and offset control  
Programmable voltage-to-current conversion  
Programmable power supply  
Sensor calibrations  
Resistance tolerance stored in nonvolatile memory  
12 extra bytes in EEMEM for user-defined information  
I2C compatible serial interface  
Direct read/write access of RDAC2 and EEMEM registers  
Predefined linear increment/decrement commands  
Predefined 6 dB step change commands  
Synchronous or aysynchronous dual channel update  
Wiper setting read back  
FUNDAMENTAL BLOCK DIAGRAM  
RDAC EEMEM  
V
RDAC1  
DD  
A1  
W1  
B1  
RDAC1  
REGIS-  
TER  
EEMEM  
POWER-ON  
REFRESH  
RAB  
TOL  
V
SS  
DGND  
WP  
DATA  
RDAC3  
A3  
W3  
B3  
SCL  
SDA  
RDAC3  
REGIS-  
TER  
2
I C  
SERIAL  
INTERFACE  
CONTROL  
AD0  
AD1  
COMMAND  
DECODE LOGIC  
4 MHz bandwidth—1 kΩ version  
Single supply 2.7 V to 5.5 V  
Dual supply 2.25 V to 2.75 V  
2 slave address decoding bits allow operation of 4 devices  
100-year typical data retention TA = 55°C  
Operating temperature –40°C to +85°C  
ADDRESS  
DECODE LOGIC  
AD5251/  
AD5252  
POWER-  
ON RESET  
CONTROL LOGIC  
Figure 1.  
APPLICATIONS  
1The terms nonvolatile memory and EEMEM are used interchangeably.  
2The terms digital potentiometer and RDAC are used interchangeably.  
Mechanical potentiometer replacement  
General purpose DAC replacement  
LCD panel VCOM adjustment  
they are restored automatically to the RDAC registers at system  
power-on; the settings can also be restored dynamically.  
GENERAL DESCRIPTION  
The AD5251/AD5252 are dual-channel, I2C, nonvolatile mem-  
ory, digitally controlled potentiometers with 64/256 positions,  
respectively. These devices perform the same electronic adjust-  
ment functions as mechanical potentiometers, trimmers, and  
variable resistors. The parts’ versatile programmability allows  
multiple modes of operation, including read/write access in the  
RDAC and EEMEM registers, increment/decrement of  
resistance, resistance changes in 6 dB scales, wiper setting  
readback, and extra EEMEM for storing user-defined infor-  
mation such as memory data for other components, look-up  
table, or system identification information.  
The AD5251/AD5252 provide additional increment,  
decrement, +6 dB step change, and –6 dB step change in  
synchronous or asynchronous channel update modes. The  
increment and decrement functions allow stepwise linear  
adjustments, while 6 dB step changes are equivalent to  
doubling or halving the RDAC wiper setting. These functions  
are useful for steep-slope nonlinear adjustments such as white  
LED brightness and audio volume control. The parts have a  
patented resistance tolerance storing function which enable the  
user to access the EEMEM and obtain the absolute end-to-end  
resistance values of the RDACs for precision applications.  
The AD5251/AD5252 allow the host I2C controllers to write  
any of the 64- or 256-step wiper settings in the RDAC registers  
and store them in the EEMEM. Once the settings are stored,  
The AD5251/AD5252 are available in TSSOP-14 packages in  
1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ options and all parts can  
operate over the –40°C to +85°C extended industrial  
temperature range.  
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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