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Focus on Motion with the ADXL367 Digital output MEMS accelerometer from Analog Devices that offers excellent resolution and ultralow power consumption. Evaluation board and samples available from Anglia
The ADXL367 from Analog Devices is an ultralow power, 3-axis microelectromechanical systems (MEMS) accelerometer that consumes just 0.89 μA at a 100 Hz output data rate and 180 nA when in motion-triggered wake-up mode
 

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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