High-Speed 12-Bit ADC with External Reference Input

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The MX7672 is a 12-bit, high-speed, BiCMOS, analog-to-digital converter (ADC) that performs conversions in as little as 3μs while consuming only 110mW of power. The MX7672 is a plug-in replacement for AD7672.

The MX7672 requires an external -5V reference. A buffered reference input minimizes reference current requirements and allows a single reference to drive several ADCs. External reference specifications can be chosen to suit the accuracy of the application. The ADC clock can be driven from either a crystal or an external clock source, such as a microprocessor (µP) clock.

Average input range is pin-selectable for 0 to +5V, 0 to +10V, or ±5V, making the ADC ideal for data-acquisition and analog input/output cards. A high-speed digital interface (125ns data-access time) with three-state data outputs is compatible with most µPs.
MX7672: Functional Diagram MX7672: Functional Diagram Enlarge+

Key Features

  • Plug-In Replacement for AD7672
  • 12-Bit Resolution and Accuracy
  • Fast Conversion Time
    • MX7672_ _03 - 3µs
    • MX7672_ _05 - 5µs
    • MX7672_ _10 - 10µs
  • Operates with +5V and -12V Supplies
  • Buffered Reference Input
  • Low 110mW Power Consumption
  • Choice of +5V, +10V, or ±5V Input Ranges
  • Fast 125ns Bus-Access Time


  • High-Speed Data-Acquisition Systems
  • Personal Computer I/O Boards
  • Sonar and Radar Signal Processing
  • Telecommunications

See parametric specs for Precision ADCs (< 5Msps) (437)

Part NumberResolution
Input Chan.Conv. Rate
ADC ArchitectureData BusDiff/S.E. InputExternal VREF
External VREF
Unipolar VIN
ADCmaxminmaxmaxSee Notes
MX7672 121308SARµP/12S.E. Only-4.95-5.05-51
$25.00 @500

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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