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7-Bit Quad Digital POT with NVM and I2C™
Overview
- Resolution (Number of Taps):129
- Resistance (ohms) k:5, 10, 50, 100
- Quad Resistor Network
- Rheostat configuration options
- 7-bit – 128 Resistors (129 Taps)
- 5kO
- 10kO
- 50kO
- 100kO
- Zero-scale to Full-scale Wiper Operation
- Low Wiper Resistance – 75O typical
- Absolute (Rheostat) – 50 ppm typical (0°-70°C)
- Ratiometric (Potentiometer) – 15 ppm typical
- Automatic Recall of Saved Wiper Setting
- WiperLock™ Technology
- 5 General Purpose Memory Locations
- 100 kHz
- 400 kHz
- 3.4 MHz
- 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
- 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
- 2.7V to 5.5V - Device Characteristics Specified
- 1.8V to 5.5V - Device Operation
- Wide Bandwidth (-3 dB) Operation – 2 MHz typical for 5.0O Device
- Extended Temperature Range (-40°C to +125°C)
- Package Types: TSSOP-20
- AEC-Q100 Grade 1 quarlified
- Rheostat Configuration Options
The MCP444X devices are non-volatile, 7-bit (129 wiper steps) digital potentiometers with EEPROM and an I2C compatible interface. The MCP444X 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 MCP444X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.
We welcome questions, comments and recommendations for improvements to this page - please contact us at: Digipotwebrequests@microchip.com if you have any; please mention the part number in the email subject header.
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