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Применения > > Programmable Gain Element Using the AD5450/AD5451/AD5452/AD5453 Current Output DAC Family

Programmable Gain Element Using the AD5450/AD5451/AD5452/AD5453 Current Output DAC Family (CN0055)

In applications where the DAC output voltage range is required to be larger than the input voltage, a programmable gain circuit can be used. This circuit provides a programmable gain function using a multiplying DAC, theAD5450/AD5451/ AD5452/AD5453, and a fast, low offset operational amplifier, the AD8065. The maximum gain value and the temperature coefficient are set by external resistors, and the resolution of the programmable gain is set by the resolution of the DAC.



Figure 1. Programmable Gain Circuit Using a Current Output DAC (Simplified Schematic: Decoupling and All Connections Not Shown)

Возможности

  • Programmable gain multiplying DAC
  • Current out DAC

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