MAX5489

• Dual, 256-Tap, Linear-Taper 10kΩ Digital Potentiometers
• Wiper Position Stored in Nonvolatile Memory (EEPROM) and Recalled on Power-Up or by an Interface Command
• IC is Pin-Compatible with 50kΩ (MAX5488) and 100kΩ Versions (MAX5489)
• Solder Links Allowing Configuration as Variable Resistors
• 6-Pin Pmod-Compatible Connector (SPI)
• Example Software Written in C for Portability
• RoHS Compliant
• Proven PCB Layout
• Fully Assembled and Tested

Applications

• Gain Control
• LCD Screen Adjustment
• Low-Drift Programmable Filters
• Low-Drift Programmable-Gain Amplifiers
• Mechanical Potentiometer Replacement

• Power-On Recall of Wiper Position from Nonvolatile Memory
• 2.7V to 5.25V Single-Supply Operation
• SPI-Compatible Serial Interface
• Convenient GUI Software
• Labeled Test Points for H_, W_, and L_
• Assembled and Tested USB-Compatible PCB Layout
• Socketed 16-Pin Thin QFN-EP (3mm x 3mm)
• Evaluates MAX5487/MAX5488/MAX5489

The MAX5488 evaluation kit (EV kit) is an assembled and tested printed-circuit board (PCB) that demonstrates the functionality of the MAX5488 dual, 256-tap, nonvolatile, SPI-interface, linear-taper digital potentiometer. Windows® 98SE/2000/XP-compatible software provides a handy user interface to exercise the features of the MAX5488.

The tiny 16-pin, 3mm x 3mm, thin QFN-packaged device is socketed, allowing for easy evaluation of the MAX5487 (10kΩ end-to-end resistance), MAX5488 (50kΩ end-to-end resistance), or MAX5489 (100kΩ end-to-end resistance) ICs. To evaluate the MAX5487 or the MAX5489, request a free sample (ETE suffix) along with the MAX5488 EV kit.

Applications

• Audio Volume Control
• LCD Screen Adjustment
• Low-Drift Programmable Filters
• Low-Drift Programmable-Gain Amplifiers
• Mechanical Potentiometer Replacement

• Data Converter, Interface, Clock, Sensor, and Other Modules Included to Address Many Design Needs
• Plug in Modules Enable Rapid Hardware Prototyping
• Proven Software Drivers Reduce Development Time
• FPGA Configuration Files Included to Simplify Design Effort

Maxim Analog Essentials is a collection of peripheral modules which can plug directly into any FPGA/CPU expansion port which follows the Pmod™ standard established by Digilent, Inc. The collection includes modules containing a wide variety of commonly used analog and mixed signal functions. The modules are supported by software which includes FPGA configuration files for three popular FPGA platforms: Avnet LX-9, Digilent Nexys 3 and Avnet ZEDBoard, as well as example programs to exercise and demonstrate each module. While the example programs demonstrate the module’s functionality, they are well partitioned and documented allowing the core routines to be easily cut and pasted into your own programs. The combination of plug-in simplicity and easy software integration allows for quick migration from idea to working prototype.