DESCRIPTION:
These devices are 256-position, digital potentiometers available with 10 KΩ resistance. The wiper position varies linearly and is controlled via an industry-standard SPI interface. The devices consume < 1 μA during static operation. A software shutdown feature is provided that disconnects the “A” terminal from the resistor stack and simultaneously connects the wiper to the “B” terminal. During shutdown mode, the value of the wiper can be changed and the potentiometer returns from shutdown to the new value. The wiper is reset to the mid-scale position upon power-up. The RS (reset) pin implements a hardware reset and also returns the wiper to mid-scale. These devices operate from a single 2.7 - 5.5V supply and are specified over a wide temperature range.
These devices come in an 8-pin DIP form factor package that can be used in breadboards or printed circuit boards. The Digital Pot is compatible with the C Stamp^TM microcomputer’s supplies and signal levels. Writing to the Digital Pot is made easy with A-WIT's supplied software command DPOTSET. This simple one command interface is all that is required to set the Digital Pot.

All items are new, fully tested, factory direct!

All software included at no extra charge!

Technical Specifications

• 256 taps
• Potentiometer values up to and including 10 KΩ
• SPI™ serial interface (mode 0,0 and 1,1)
• ±1 LSB max INL & DNL
• Low power CMOS technology
• 1 μA maximum supply current in static operation
• Shutdown feature open circuits of all resistors for maximum power savings
• Flexible single supply operation (2.7V - 5.5V)
• Temperature range supported: -40°C to +125°C
• High reliability
• ESD protection: > 4000V
• 8-pin PDIP
• Compact and breadboard-friendly
• Compatible with C Stamp microcomputer

SPI is a trademark of Motorola Corporation.

Related Items
C Stamp 48-Pin Module

Documentation
CS45800X Digital POTs Reference Guide Manual
CS458001 Data Sheet


Do you need more information?

E-Mail us ... info@a-wit.com