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MP7226KN Datasheet(PDF) 1 Page - Exar Corporation |
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MP7226KN Datasheet(HTML) 1 Page - Exar Corporation |
1 / 16 page MP7226 1 Rev. 2.00 FEATURES • MPS Pioneered Segmented DAC Approach • Four 8-Bit DACs with Buffer Amplifiers • Bipolar Amplifier Inputs for Low Noise and Drift • Operates with Single or Dual Supplies • µP Compatible (95ns WR) • No External Adjustments Required • Power-on-Reset Function • Specified for 5 to 15 V Operation • ESD Protection: 2000 Volts Minimum • Latch-Up Proof • Octal Available: MP7228 BiCMOS Fixed, Quad, Voltage Output, Single or Dual Supply 8-Bit Digital-to-Analog Converter APPLICATIONS • Function Generators • Automatic Test Equipment • Process Controls BENEFITS • Reduced Board Space; Lower System Cost • Reduced System Errors due to Excellent DAC-to-DAC Matching and Tracking • Easy to Design with Microprocessors • Stable, High Reliability through Advanced Processing • Lower 1/f Noise Increases Useful Dynamic Range GENERAL DESCRIPTION The MP7226 contains four 8-bit voltage-output Digital-to- Analog Converters, with BiCMOS output buffer amplifiers and interface logic on a monolithic chip. Separate on-chip latches are provided for each of the four D/A converters. The control logic is speed compatible with most 8-bit microprocessors. All digital inputs are TTL/CMOS(5V) compatible. The MP7226 is manufactured using advanced thin film resis- tors on a double metal BiCMOS process. The MP7226 incorpo- rates a unique bit decoding technique yielding lower glitch, higher speed and excellent accuracy over temperature and time. The MP7226 maintains 8-Bit accuracy over the full operat- ing temperature range without laser trim or external adjust- ments. SIMPLIFIED BLOCK DIAGRAM LATCH 1 DAC 1 – + 1 DAC 2 – + 2 DAC 3 – + 3 DAC 4 – + 4 VOUT1 VOUT2 VOUT3 VOUT4 VREF VDD LATCH 2 LATCH 3 LATCH 4 VSS AGND MSB LSB DATA (8 BIT) WR A1 A0 CONTROL LOGIC D A T A B U S DGND |
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