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EVAL-AD5143DBZ

更新时间： 2024-02-24 11:26:03
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亚德诺 - ADI 电位器
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28页 642K
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Quad Channel, 128-/256-Position, I2C Nonvolatile Digital Potentiometer

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Quad Channel, 128-/256-Position, I2C,  
Nonvolatile Digital Potentiometer  
Data Sheet  
AD5123/AD5143  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
V
DD  
10 kΩ and 100 kΩ resistance options  
Resistor tolerance: 8% maximum  
Wiper current: 6 mA  
Low temperature coefficient: 35 ppm/°C  
Wide bandwidth: 3 MHz  
AD5123/AD5143  
POWER-ON  
RESET  
RDAC1  
A1  
INPUT  
REGISTER 1  
W1  
B1  
Fast start-up time < 75 μs  
RDAC2  
A2  
Linear gain setting mode  
INPUT  
W2  
B2  
REGISTER 2  
SCL  
SDA  
Single- and dual-supply operation  
Wide operating temperature: −40°C to +125°C  
3 mm × 3 mm package  
SERIAL  
INTERFACE  
RDAC3  
7/8  
INPUT  
REGISTER 3  
W3  
B3  
ADDR  
4 kV ESD protection  
RDAC4  
APPLICATIONS  
INPUT  
REGISTER 4  
W4  
B4  
Portable electronics level adjustment  
LCD panel brightness and contrast controls  
Programmable filters, delays, and time constants  
Programmable power supplies  
EEPROM  
MEMORY  
GND  
V
SS  
Figure 1.  
GENERAL DESCRIPTION  
Table 1. Family Models  
The AD5123/AD5143 potentiometers provide a nonvolatile  
solution for 128-/256-position adjustment applications, offering  
guaranteed low resistor tolerance errors of 8% and up to 6 mA  
current density in the Ax, Bx, and Wx pins.  
Model  
Channel Position Interface Package  
AD51231  
AD5124  
AD5124  
AD5143  
AD5144  
AD5144  
Quad  
Quad  
Quad  
Quad  
Quad  
Quad  
128  
128  
128  
256  
256  
256  
256  
128  
128  
256  
256  
128  
256  
I2C  
LFCSP  
LFCSP  
TSSOP  
LFCSP  
LFCSP  
TSSOP  
SPI/I2C  
SPI  
I2C  
SPI/I2C  
SPI  
I2C  
The low resistor tolerance and low nominal temperature coefficient  
simplify open-loop applications as well as applications requiring  
tolerance matching.  
AD5144A Quad  
AD5122 Dual  
AD5122A Dual  
AD5142 Dual  
AD5142A Dual  
TSSOP  
The linear gain setting mode allows independent programming  
of the resistance between the digital potentiometer terminals,  
through the RAW and RWB string resistors, allowing very accurate  
resistor matching.  
SPI  
LFCSP/TSSOP  
LFCSP/TSSOP  
LFCSP/TSSOP  
LFCSP/TSSOP  
LFCSP  
I2C  
SPI  
I2C  
SPI/I2C  
SPI/I2C  
The high bandwidth and low total harmonic distortion (THD)  
ensure optimal performance for ac signals, making the devices  
suitable for filter design.  
AD5121  
AD5141  
Single  
Single  
LFCSP  
1 Two potentiometers and two rheostats.  
The low wiper resistance of only 40 Ω at the ends of the resistor  
array allows for pin-to-pin connection.  
The wiper values can be set through an I2C-compatible digital  
interface that is also used to read back the wiper register and  
EEPROM contents.  
The AD5123/AD5143 are available in a compact, 16-lead, 3 mm ×  
3 mm LFCSP. The parts are guaranteed to operate over the extended  
industrial temperature range of −40°C to +125°C.  
Rev. A  
Document Feedback  
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 ©2012–2013 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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