AD5121 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD5121
Manufacturer

ADI
ChipWorker Part#

CW760584475
Description

Quad Channel, 128-/256Position, I2C Nonvolatile Digital Potentiometer
Documentation

Datasheet

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AD5121 Specifications

Attribute	Attribute Value

Part Number	AD5121
Manufacturer	ADI
ChipWorker Part#	CW760584475
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
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 low resistor tolerance and low nominal temperature coefficient simplify open-loop applications as well as applications requiring tolerance matching.
The linear gain setting mode allows independent programming of the resistance between the digital potentiometer terminals, through RAW and RWB string resistors, allowing very accurate resistor matching.
The high bandwidth and low total harmonic distortion (THD) ensure optimal performance for ac signals, making it suitable for filter design.
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.
The AD5121/AD5141 is 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.
Applications
Portable electronics level adjustment
LCD panel brightness and contrast controls
Programmable filters, delays, and time constants
Programmable power supplies
### Features and Benefits
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
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
Qualified for automotive applications

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