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Signal Processing Systems : Converters : Analog Devices, Inc. - AD7945
 
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12-bit 3.3/5 V Multiplying D/A Converter with Parallel Interface

Model: AD7945

  • 12-bit multiplying DACs
  • 0.5 LSBs INL and DNL
  • Fast interface
  • 40 ns write pulsewidth (AD7945, A7948)
  • Guaranteed Specifications with +3.3 V/+5 supply
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The AD7945 is fast 12-bit multiplying DACs that operate from a single +5 V supply (Normal Mode) and a single +3.3 V to +5 V supply (Biased Mode). The AD7943 has a serial interface, the AD7945 has a 12-bit parallel interface, and the AD7948 has an 8-bit byte interface. They will replace the industry-standard AD7543, AD7545 and AD7548 in many applications, and they offer superior speed and power consumption performance.

The AD7945 is available in 20-pin DIP, 20-pin SOP and 20-pin SSOP.

  • 12-bit multiplying DACs
  • 0.5 LSBs INL and DNL
  • Fast interface
  • 40 ns write pulsewidth (AD7945, A7948)
  • Guaranteed Specifications with +3.3 V/+5 supply
  • 5 µW typ low power
  • 60 nV-s with amplifier connected low glitch
  • 600 ns to 0.01% with AD843 fast settling
  • Application
    • Battery-powered instrumentation
    • Laptop computers
    • Upgrades for All 754x series DACs (5 V designs)
 
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