The MCP446X devices are non-volatile, 8-bit (257 wiper steps) digital potentiometers with EEPROM and an I2C compatible interface. The MCP446X 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 MCP446X 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 Taps)
- Four RAB Resistances options:
- 5kΩ
- 10kΩ
- 50kΩ
- 100kΩ
- Zero-scale to Full-scale Wiper Operation
- Low Wiper Resistance – 75Ω typical
- Low Tempco:
- Absolute (Rheostat) – 50 ppm typical (0°-70°C)
- Ratiometric (Potentiometer) – 15 ppm typical
- Non-volatile Memory
- Automatic Recall of Saved Wiper Setting
- WiperLock™ Technology
- I2C™Compatible Serial Interface Support:
- 100 kHz
- 400 kHz
- 3.4 MHz
- Serial Protocol Allows :
- High-Speed Read/Write to wiper
- Read/Write to EEPROM
- Write Protect to be enabled/disable
- WiperLock to be enabled/disabled
- Resistor Network Terminal Disconnect Feature via 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 Characteristics Specified
- 1.8V to 5.5V - Device Operation
- Wide Bandwidth (-3 dB) Operation – 2 MHz typical for 5.0Ω Device
- Extended Temperature Range (-40°C to +125°C)
- Package Types: 4x4 QFN-20 and TSSOP-20
- AEC-Q100 Grade 1 quarlified
