The MCP434X devices are non-volatile, 7-bit (129 wiper steps) digital potentiometers with EEPROM and an SPI compatible interface. The MCP434X family is available with end-to-end resistor values of 5KΩ, 10KΩ, 50kΩ and 100KΩ. These devices offer WiperLock™ Technology which allows the user unlimited reprogramming and locking of the wiper setting. It is useful for equipment that requires factory trimming or recalibration. The MCP434X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.
Quad Resistor Network
Potentiometer or Rheostat Configuration Options
Resistor Network Resolution:
7-bit: 128 Resistors (129 Taps)
RAB Resistances Options of:
Zero Scale to Full Scale Wiper Operation
Low Wiper Resistance: 75 Ω (typical)
Absolute (Rheostat): 50 ppm typical (0°C to 70°C)
Ratiometric (Potentiometer): 15 ppm typical
Automatic Recall of Saved Wiper Setting
SPI serial interface
Brown-out reset protection (1.5V typical)
Serial Interface Inactive current (2.5 uA typical)
The MCP43XX Evaluation Board allows the system designer to quickly evaluate the operation of Microchip Technology’s MCP4361 Digital Potentiometer device. The board uses the TSSOP20EV Generic PCB and has been populated for the MCP4361. The 6-pin header (PICkit Serial) has been jumpered to the MCP4361’s appropriate pins. This allows the PICkit Serial to communicate with the device....