SBOA323A December   2018  – June 2021 OPA333 , TLV9002

 

  1.   Design Goals
  2.   Design Description
  3.   Design Notes
  4.   Design Steps
  5.   Design Simulations
    1.     DC Transfer Results
  6.   Design References
  7.   Design Featured Op Amp
  8.   Design Alternate Op Amp
  9.   Revision History

Design Notes

  1. Use the op amp in a linear operating region. Linear output swing is usually specified under the AOL test conditions. TLV9002 linear output swing 0.05 V to 3.25 V.
  2. The connection, Vin, is a positive temperature coefficient output voltage. To correct a negative temperature coefficient (NTC) output voltage, switch the position of R1 and the NTC thermistor.
  3. Choose R1 based on the temperature range and the value of NTC.
  4. Using high value resistors can degrade the phase margin of the amplifier and introduce additional noise in the circuit. It is recommended to use resistor values around 10 kΩ or less.
  5. A capacitor placed in parallel with the feedback resistor will limit bandwidth, improve stability and help reduce noise.