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Microchip MCP4017/18/19: 7-Bit single I²C™ digital pots with volatile memory in SC70
Microchip MCP4017 MCP4018 MCP4019

Microchip Technology have released the MCP4017, MCP4018, and, MCP4019 families of volatile digital potentiometers.

These device families offer a wide range of product options using an I²C interface. This family of devices supports 7-bit, volatile memory versions, and potentiometer and rheostat configurations.

All devices are specified over the extended industrial temperature range of -40 to +125 degrees Celsius, and are available in several industry-standard package 5/6-ld SC70 packages. Unlike mechanical potentiometers, the MCP4017/8/9 devices can be controlled digitally, through an I2C interface. This eliminates the need for human interaction, which increases system accuracy, flexibility and manufacturing throughput; while decreasing manufacturing costs. Digital control also provides more system flexibility than mechanical control. 

Features

  • Single or Dual Resistor Network options
  • Potentiometer or Rheostat configuration options
  • 7-bit: Resistor Network Resolution

127 Resistors (128 Steps)

  • Zero Scale to Full Scale Wiper operation
  • RAB Resistances: 5 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ
  • Low Wiper Resistance: 100Ω (typical)
  • Low Tempco:
Absolute (Rheostat): 50 ppm typical (0°C to 70°C)
Ratiometric (Potentiometer): 10 ppm typical
    • Simple I²C™ Protocol with read & write commands
    • Brown-out reset protection (1.5V typical)
    • Power-on Default Wiper Setting (Mid-scale)
    • Low-Power Operation:

    2.5 μA Static Current (typical)

    • Wide Operating Voltage Range:

    2.7V to 5.5V - Device Characteristics Specified
    1.8V to 5.5V - Device Operation

    • Wide Bandwidth (-3 dB) Operation:
    2 MHz (typical) for 5.0 kΩ device
      • Extended temperature range (-40°C to +125°C)
      • Very small package (SC70)
      • Lead free (Pb-free) package
      Typical Applications
        • Portable Instrumentation
        • Sensor Conditioning
        • Temperature Measurement
        • DC Offset Correction
        • Medical Instrumentation

        For more information on the full range of Microchip products available from Anglia please call +44 (0)1945 474747 or email info@anglia.com

        Alternatively, click on this link to go to the main Microchip section where you can view other news articles and product data.

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This news article was published in December 2009

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11/11/10