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MX7225, MX7226
CMOS, Quad, 8-Bit DAC with Voltage-Output Amplifier Latches


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Description
FULL DATA SHEET (PDF, 7.8MB)
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Maxim's MX7225 and MX7226 each contain four 8-bit voltage-output digital-to-analog converters (DACs). They include output buffer amplifiers and input logic for simple microprocessor and TTL/CMOS interfaces. 8-bit performance is achieved over the full operating temperature range without external trimming.

The MX7225 contains double-buffered logic inputs that allow all analog outputs to be simultaneously updated using one control signal. There are also four separate reference inputs so that the range of each DAC can be independently set. The MX7226 has separate inputs registers for each of its four DACS. Data is transferred into an input register from a common 8-bit TTL/CMOS-compatible input port. Address inputs A0 and A1 determines which DAC is loaded when WR goes low. All DACs share a common reference input. For -7225 and -7226 designs utilizing a 5V supply, see the MAX505 and MAX506 data sheet.

Key Features   Applications/Uses
  • Buffered Voltage Output
  • Double-Buffered Inputs (MX7225)
  • Microprocessor and TTL/CMOS Compatible
  • Operate from Single or Dual Supplies
  • Require No External Adjustments

 
  • Arbitrary Function Generators
  • Automatic Test Equipment
  • Digital Offset/Gain Adjustment
  • Industrial Process Control
  • Microprocessor-Controlled Calibration
  • Minimum Component Count Analog Systems

    Key Specifications:   Precision DACs (4-12 Bits)
    Part Number Number of Bits Number of Channels Output Type Reference Max. INL (±LSB) Interface Min. Single Supply (V) Max. Single Supply (V) Operating Temp. Range (°C) Price**
    MX7225  8 4 Voltage- Buffered Ext. 0.5 Parallel - Full Word -5.5 16.5 -55 to +125
    -40 to +85
    0 to +70
    $14.14 @ 1k
    MX7226  1 $11.80 @ 1k
    See All Precision DACs (4-12 Bits) (261)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MX7225, MX7226: Functional Block Diagram
    Functional Block Diagram

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    Document Ref.: 19-0932; Rev 1; 1993-04-01
    This page last modified: 2008-09-26


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