Datasheet > AD5121WBCPZ10-RL7

AD5121WBCPZ10-RL7

更新时间： 2024-11-20 01:22:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
32页	791K
描述
Single Channel, 128-/256-Position, I2C/SPI, Nonvolatile Digital Potentiometer

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Single Channel, 128-/256-Position, I²C/SPI,

Nonvolatile Digital Potentiometer

Data Sheet

AD5121/AD5141

FEATURES

FUNCTIONAL BLOCK DIAGRAM

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

AD5121/

AD5141

POWER-ON

RESET

RDAC

INPUT

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 LFCSP

RESET

DIS

SCLK/SCL

SDI/SDA

7/8

SERIAL

INTERFACE

EEPROM

MEMORY

SYNC/ADDR0

SDO/ADDR1

Qualified for automotive applications

GND

APPLICATIONS

Figure 1.

Portable electronics level adjustment

LCD panel brightness and contrast controls

Programmable filters, delays, and time constants

Programmable power supplies

GENERAL DESCRIPTION

The AD5121/AD5141 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 A, B, and W pins.

The AD5121/AD5141 are available in a compact, 16-lead, 3 mm ×

3 mm LFCSP. The devices are guaranteed to operate over the

extended industrial temperature range of −40°C to +125°C.

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

AD5143¹

AD5144

Quad

128

256

128

256

128

256

I²C

LFCSP

TSSOP

LFCSP

TSSOP

SPI/I²C

SPI

The linear gain setting mode allows independent programming

of the resistance between the digital potentiometer terminals,

through R_AWand R_WBstring resistors, allowing very 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 it suitable

for filter design.

SPI

LFCSP/TSSOP

LFCSP

I²C

SPI

I²C

SPI/I²C

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 SPI-/I²C-compatible digital

interface that is also used to read back the wiper register and

EEPROM contents.

AD5121

AD5141

Single

LFCSP

¹Two 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.

Technical Support

www.analog.com

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