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AD5112BCPZ10-1-RL7 PDF预览

AD5112BCPZ10-1-RL7

更新时间： 2024-11-19 08:16:23
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
28页 517K
描述
Single-Channel, 128-/64-/32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer

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Single-Channel, 128-/64-/32-Position, I2C, 8%  
Resistor Tolerance, Nonvolatile Digital Potentiometer  
Data Sheet  
AD5110/AD5112/AD5114  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
V
V
DD  
LOGIC  
Single-channel, 128-/64-/32-position resolution  
5 kΩ, 10 kΩ, 80 kΩ nominal resistance  
Maximum 8ꢀ nominal resistor tolerance error  
Low wiper resistance  
AD5110/AD5112/AD5114  
POWER-ON  
RESET  
A
6 mA maximum wiper current density  
Resistor tolerance stored in EEPROM (0.1ꢀ accuracy)  
Rheostat mode temperature coefficient: 35 ppm/°C  
Potentiometer mode temperature coefficient: 5 ppm/°C  
2.3 V to 5.5 V single-supply operation  
1.8 V to 5.5 V logic supply operation  
W
B
DATA  
DATA  
EEPROM  
SDA  
SCL  
2
I C  
SERIAL  
INTERFACE  
RDAC  
REGISTER  
Power-on EEPROM refresh time < 50 μs  
I2C-compatible interface  
GND  
Figure 1.  
Wiper setting and EEPROM readback  
50-year typical data retention at 125°C  
1 million write cycles  
Wide operating temperature: −40°C to +125°C  
Thin, 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package  
APPLICATIONS  
Mechanical potentiometer replacement  
Portable electronics level adjustment  
Audio volume control  
Low resolution DAC  
LCD panel brightness and contrast control  
Programmable voltage to current conversion  
Programmable filters, delays, time constants  
Feedback resistor programmable power supply  
Sensor calibration  
GENERAL DESCRIPTION  
The AD5110/AD5112/AD5114 provide a nonvolatile solution  
for 128-/64-/32-position adjustment applications, offering  
guaranteed low resistor tolerance errors of 8% and up to  
6 mA current density in the A, B, and W pins. The low resistor  
tolerance, low nominal temperature coefficient and high  
bandwidth simplify open-loop applications, as well as tolerance  
matching applications.  
The AD5110/AD5112/AD5114 are available in a 2 mm × 2 mm  
LFCSP package. The parts are guaranteed to operate over the  
extended industrial temperature range of −40°C to +125°C.  
Table 1. 8% Resistance Tolerance Family  
Model  
Resistance (kΩ)  
Position  
128  
128  
64  
64  
64  
Interface  
I2C  
Up/down  
I2C  
Up/down  
Push-button  
I2C  
AD5110  
AD5111  
AD5112  
AD5113  
AD5116  
AD5114  
AD5115  
10, 80  
10, 80  
5, 10, 80  
5, 10, 80  
5, 10, 80  
10, 80  
The new low wiper resistance feature minimizes the wiper  
resistance in the extremes of the resistor array to only 45 Ω,  
typical.  
The wiper settings are controllable through an I2C-compatible  
digital interface that is also used to readback the wiper register  
and EEPROM content. Resistor tolerance is stored within  
EEPROM, providing an end-to-end tolerance accuracy of 0.1%.  
32  
32  
10, 80  
Up/down  
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 registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2011 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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