SBOA367B December   2019  – June 2022 TLV9001 , TLV9002 , TLV9004 , TLV9051 , TLV9052 , TLV9054 , TLV9061 , TLV9062 , TLV9064

 

  1.   Designing for TLV90xxS operational amplifiers with shutdown
  2.   Trademarks
  3. 1 Introduction
  4. 2 Shutdown Specifications
  5. 3  SHDN Pin Limits and Connections
  6. 4 Output Behavior During Enable and Shutdown
  7. 5 Enable Time and Shutdown Time Factors
    1. 5.1 Quiescent Current
    2. 5.2 Temperature
    3. 5.3 Load
    4. 5.4 Feedback Path
  8. 6 Impact on Commonly Used Circuit Configurations
    1. 6.1 Inverting Amplifier Circuit
    2.     14
    3. 6.2 Non-Inverting Amplifier Circuit
    4.     16
    5. 6.3 Buffer Circuit
    6.     18
  9. 7 Advanced Circuit Functionality Using Amplifiers With Shutdown
  10. 8 Conclusion
  11. 9 References
  12. 10Revision History

5.1 Quiescent Current

It is generally the case that amplifiers in the TLV90xxS family with higher quiescent current specifications will have faster enable and shutdown times. Note that this is not universally true for all amplifiers. There are a variety of factors that determine these times. But for these devices of similar structure, selecting a part with faster enable and shutdown times generally means the device will consume more power.

Table 5-1 Data Sheet Quiescent Current vs Enable and Shutdown Times
Device Quiescent Current
(IQ)		 Gain Bandwidth Product
(GBW)		 Enable Time
(Full Shutdown, ton)		 Enable Time
(Partial Shutdown, ton)		 Disable Time
(toff)
TLV900xS

60 µA

 1 MHz

70 µs

50 µs

4 µs
TLV905xS

330 µA

5 MHz

35 µs

10 µs

6 µs
TLV906xS 538 µA 10 MHz 10 µs — 0.6 µs