The MCP436X devices are non-volatile, 8-bit (257 wiper steps) digital potentiometers with EEPROM and an SPI compatible interface. The MCP436X 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 MCP436X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.
Feature
- Quad Resistor Network
- Potentiometer or Rheostat Configuration Options
- Resistor Network Resolution:
- 8-bit: 256 Resistors (257 Steps)
- RAB Resistances Options of:
- 5kΩ
- 10kΩ
- 50kΩ
- 100kΩ
- Zero Scale to Full Scale Wiper Operation
- Low Wiper Resistance: 75 Ω (typical)
- Low Tempco:
- Absolute (Rheostat): 50 ppm typical (0°C to 70°C)
- Ratiometric (Potentiometer): 15 ppm typical
- Non-volatile Memory
- Automatic Recall of Saved Wiper Setting
- WiperLock™ Technology
- SPI serial interface (10 MHz, modes 0,0 & 1,1)
- High-Speed Read/Writes to wiper registers
- Read/Write to Data EEPROM registers
- Serially enabled EEPROM write protect
- Resistor Network Terminal Disconnect Featurevia Terminal Control (TCON) Register
- Reset input pin
- Write Protect Feature:
- Hardware Write Protect (WP) Control pin
- Software Write Protect (WP) Configuration bit
- Brown-out reset protection (1.5V typical)
- Serial Interface Inactive current (2.5 uA typical)
- High-Voltage Tolerant Digital Inputs: Up to 12.5V
- Supports Split Rail Applications
- Wide Operating Voltage:
- 2.7V to 5.5V - Device CharacteristicsSpecified
- 1.8V to 5.5V - Device Operation
- Wide Bandwidth (-3 dB) Operation:
- 2 MHz (typical) for 5.0 kΩ device
- Extended temperature range (-40°C to +125°C)
