Quad Channel, 128-Position, SPI, Nonvolatile Digital Potentiometer
The AD5124/AD5144/AD5144A 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.
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, RAW and RWB, allowing very accurate resistor matching.
The high bandwidth and low total harmonic distortion (THD) ensure an optimal performance for ac signals, making it suitable for filter design.
The low wiper resistance at the ends of the resistor array of only 40 Ω, allowing pin-to-pin connection.
The wiper values can be set through an SPI-/I2C-compatible digital interface that is also used to readback the wiper register and EEMEM content.
The AD5124/AD5144/AD5144A are available in a compact 24-lead, 4 mm × 4 mm LFCSP and a 20-lead TSSOP. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C.
- Portable electronics level adjustment
- LCD panel brightness and contrast controls
- Programmable filters, delays, time constants
- Programmable power supplies
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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
This evaluation kit can also be used for the AD5124 and AD5144A generics.
The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CS1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.