MCP4431

The MCP443X devices are quad-channel, volatile, 7-bit (129 wiper steps) digital potentiometers with an I2C compatible interface. The MCP443X family is available with end-to-end resistor values of 5KΩ, 10KΩ, 50kΩ and 100KΩ. These devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.

Features
  • Quad Resistor Network
  • Potentiometer or Rheostat configuration options
  • Resistor Network Resolution: 7-bit – 128 Resistors (129 Taps)
  • 7-bit – 128 Resistors (129 Taps)
  • Four RAB Resistances options: 5kΩ 10kΩ 50kΩ 100kΩ
  • 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
  • Absolute (Rheostat) – 50 ppm typical (0°-70°C)
  • Ratiometric (Potentiometer) – 15 ppm typical
  • I2C™Compatible Serial Interface Support: 100 kHz 400 kHz 3.4 MHz
  • 100 kHz
  • 400 kHz
  • 3.4 MHz
  • Serial Protocol Allows High-Speed Read/Write to Wiper
  • Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register
  • Reset Input Pin
  • 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
  • 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: TSSOP-14
Parameter
Parameter Name Value Value
Temp. Range (°C) -40 to +125 -40 to +125
Volatile / Non Volatile Volatile Volatile
Number of Taps 129 129
Resistance (ohms) K 5, 10, 50, 100 5, 10, 50, 100
# per Package 4 4
INL (Max) 1 1
DNL (Max) 0.5 0.5
Interface I²C™ I²C™
Documents
MCP4431 Data SheetData Sheets11/18/20105954KB
AN1080 - Understanding Digital Potentiometers Resistor VariationsAppNote07/27/2009565KB
AN1316 - Using Digital Potentiometers for Programmable Amplifier GainAppNote04/14/2010441KB
AN219 - Comparing Digital Potentiometers to Mechanical PotentiometersAppNote11/20/2000133KB
AN691 - Optimizing the Digital Potentiometer in Precision CircuitsAppNote05/08/2001240KB
AN692 - Using a Digital Potentiometer to Optimize a Precision Single Supply Photo DetectAppNote02/23/2001253KB
AN737 - Using Digital Potentiometers to Design Low Pass Adjustable FiltersAppNote02/24/2004277KB
Implementing a 10-Bit Digi Pot Using a Quad 8-Bit Digi PotTech Briefs01/10/2013360KB
Analog Solutions for Automotive Applications Design GuideBrochures12/08/2009284KB
Digital Potentiometer Design GuideDesign Guides01/03/2011706KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MCP4431-103E/ML20QFN-40C to +125CTUBE1.351.131.020.990.98
MCP4431-103E/ST20TSSOP-40C to +125CTUBE1.351.131.020.990.98
MCP4431-104E/ML20QFN-40C to +125CTUBE1.351.131.020.990.98
MCP4431-104E/ST20TSSOP-40C to +125CTUBE1.351.131.020.990.98
MCP4431-502E/ML20QFN-40C to +125CTUBE1.351.131.020.990.98
MCP4431-502E/ST20TSSOP-40C to +125CTUBE1.351.131.020.990.98
MCP4431-503E/ML20QFN-40C to +125CTUBE1.351.131.020.990.98
MCP4431-503E/ST20TSSOP-40C to +125CTUBE1.351.131.020.990.98
MCP4431T-103E/ML20QFN-40C to +125CT/R1.351.131.020.990.98
MCP4431T-103E/ST20TSSOP-40C to +125CT/R1.351.131.020.990.98
MCP4431T-104E/ML20QFN-40C to +125CT/R1.351.131.020.990.98
MCP4431T-104E/ST20TSSOP-40C to +125CT/R1.351.131.020.990.98
MCP4431T-502E/ML20QFN-40C to +125CT/R1.351.131.020.990.98
MCP4431T-502E/ST20TSSOP-40C to +125CT/R1.351.131.020.990.98
MCP4431T-503E/ML20QFN-40C to +125CT/R1.351.131.020.990.98
MCP4431T-503E/ST20TSSOP-40C to +125CT/R1.351.131.020.990.98
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MCP4431-502E/ST0.0737000.17567620TSSOP4.4mmMatte Tine3
MCP4431-103E/ST0.0737000.17567620TSSOP4.4mmMatte Tine3
MCP4431T-502E/ST0.0737000.20000020TSSOP4.4mmMatte Tine3
MCP4431T-103E/ST0.0737000.20000020TSSOP4.4mmMatte Tine3
MCP4431-503E/ST0.0737000.17567620TSSOP4.4mmMatte Tine3
MCP4431T-503E/ST0.0737000.20000020TSSOP4.4mmMatte Tine3
MCP4431-104E/ST0.0737000.17567620TSSOP4.4mmMatte Tine3
MCP4431T-104E/ST0.0737000.20000020TSSOP4.4mmMatte Tine3
MCP4431-502E/ML0.0431000.07692320QFN4x4x0.9mmMatte Tine3
MCP4431T-502E/ML0.0431000.21212120QFN4x4x0.9mmMatte Tine3
MCP4431-103E/ML0.0431000.07692320QFN4x4x0.9mmMatte Tine3
MCP4431T-103E/ML0.0431000.21212120QFN4x4x0.9mmMatte Tine3
MCP4431-503E/ML0.0431000.07692320QFN4x4x0.9mmMatte Tine3
MCP4431T-503E/ML0.0431000.21212120QFN4x4x0.9mmMatte Tine3
MCP4431T-104E/ML0.0431000.21212120QFN4x4x0.9mmMatte Tine3
MCP4431-104E/ML0.0431000.07692320QFN4x4x0.9mmMatte Tine3
MCP4431 Data Sheet MCP4431
AN1080 MCP46XXEV
AN1316 MCP46XXEV
AN1316 Excel Files MCP46XXEV
AN219 MCP4662
AN691 MCP4651
AN692 MCP4662
AN737 MCP4662
Implementing a 10-Bit Digi Pot Using a Quad 8-Bit Digi Pot MCP4661
Analog Solutions for Automotive Applications Design Guide MCP2022
Digital Potentiometer Design Guide SOIC8EV
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