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High-Speed 12-Bit ADC with External Reference Input

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 1
Conv. Rate (ksps) (max) 308
Data Bus µP/12
ADC Architecture SAR
Diff/S.E. Input S.E. Only
External VREF (V) (min) -4.95
External VREF (V) (max) -5.05
Unipolar VIN (V) (max) -5
INL (±LSB) 1
Package/Pins PDIP/24
PLCC/28
Budgetary
Price (See Notes)
26.25
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Simplified Block Diagram

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 1
Conv. Rate (ksps) (max) 308
Data Bus µP/12
ADC Architecture SAR
Diff/S.E. Input S.E. Only
External VREF (V) (min) -4.95
External VREF (V) (max) -5.05
Unipolar VIN (V) (max) -5
INL (±LSB) 1
Package/Pins PDIP/24
PLCC/28
Budgetary
Price (See Notes)
26.25

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

Applications/Uses

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

Description

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.

Simplified Block Diagram

MX7672: Functional Diagram MX7672: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .