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AD5122WBRUZ10-RL7 PDF预览

AD5122WBRUZ10-RL7

更新时间： 2024-09-24 19:43:55
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管转换器电阻器
页数 文件大小 规格书
32页 740K
描述
Dual Channel, 128-Position, SPI, Nonvolatile Digital Potentiometer

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AD5122WBRUZ10-RL7 数据手册

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Dual Channel, 128-/256-Position, SPI,  
Nonvolatile Digital Potentiometer  
Data Sheet  
AD5122/AD5142  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
V
V
DD  
LOGIC  
INDEP  
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  
POWER-ON  
RESET  
AD5122/  
AD5142  
RDAC1  
A1  
W1  
B1  
Fast start-up time <75 µs  
Linear gain setting mode  
Single- and dual-supply operation  
Independent logic supply: 1.8 V to 5.5 V  
Wide operating temperature: −40°C to +125°C  
3 mm × 3 mm package option  
INPUT  
RESET  
SCLK  
REGISTER 1  
SERIAL  
INTERFACE  
RDAC2  
A2  
W2  
B2  
SDI  
7/8  
INPUT  
REGISTER 2  
SYNC  
SDO  
EEPROM  
MEMORY  
Qualified for automotive applications  
APPLICATIONS  
GND  
V
SS  
Portable electronics level adjustment  
LCD panel brightness and contrast controls  
Programmable filters, delays, and time constants  
Programmable power supplies  
Figure 1.  
The AD5122/AD5142 are available in a compact, 16-lead, 3 mm ×  
3 mm LFCSP and a 16-lead TSSOP. The devices are guaranteed  
to operate over the extended industrial temperature range of  
−40°C to +125°C.  
GENERAL DESCRIPTION  
The AD5122/AD5142 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.  
Table 1. Family Models  
The low resistor tolerance and low nominal temperature coefficient  
simplify open-loop applications as well as applications requiring  
tolerance matching.  
Model  
Channel Position Interface Package  
AD51231  
AD5124  
AD5124  
AD51431  
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  
The linear gain setting mode allows independent programming  
of the resistance between the digital potentiometer terminals  
through the RAW and RWB string resistors, allowing accurate  
resistor matching.  
I2C  
SPI/I2C  
SPI  
I2C  
AD5144A Quad  
AD5122 Dual  
AD5122A Dual  
AD5142 Dual  
AD5142A Dual  
TSSOP  
The high bandwidth and low total harmonic distortion (THD)  
ensure optimal performance for ac signals, making these devices  
suitable for filter design.  
SPI  
LFCSP/TSSOP  
LFCSP/TSSOP  
LFCSP/TSSOP  
LFCSP/TSSOP  
LFCSP  
I2C  
SPI  
I2C  
SPI/I2C  
SPI/I2C  
The low wiper resistance of only 40 Ω at the ends of the resistor  
array allows pin to pin connection.  
AD5121  
AD5141  
Single  
Single  
LFCSP  
The wiper values can be set through an SPI-compatible digital  
interface that also reads back the wiper register and EEPROM  
contents.  
1 Two potentiometers and two rheostats.  
Rev. C  
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  
rightsof third parties that may result fromits 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 andregisteredtrademarks 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 ©2012–2017 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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