TLV9001: TLV9001 consumption

Ian Wang

Mastermind 25095 points

Part Number: TLV9001

Hi Sir,

Do you have TLV9001 fully power consumption data for reference?

Thanks, IAN.

over 3 years ago

0 kai klaas69 over 3 years ago

Guru 140200 points

Hi Ian,

what do you mean by "fully"?

Kai

0 Ian Wang over 3 years ago in reply to kai klaas69

TI__Mastermind 25095 points

Hi Kai,

I means detail power consumption spec.

Thanks, Ian.

0 Former Member over 3 years ago in reply to Ian Wang

Hi Ian,

Full power consumption consists of two things: the quiescent power draw of the amplifier and the output power consumption.

The first is very easy to calculate: (V+ - V-) * IQ. The second is a bit more complicated and depends on the output signal.

I would highly recommend you take a look at these resources. They will explain things in much more detail than I can in a single e2e post. Make sure to click on the link at the bottom of Thomas Kuehl's blog to see part 2.

TI Precision Labs – Op Amps: Power and Temperature

Thomas Kuehl – Top questions on op amp power dissipation – Part 1

Please let me know if you have any further questions.

Regards,

Daniel

0 Ian Wang over 3 years ago in reply to Former Member

TI__Mastermind 25095 points

Hi Daniel,

Thanks.

1. The Iq below is base on Vs=5.5V , how to know if Vs =1.8V?

2. The Iq is for no output from OP , if OP have output , usually its iq will increase , how to estimation this part?

Thanks, Ian.

0 Former Member over 3 years ago in reply to Ian Wang

Hi Ian,

To answer your questions:

1. I would point to figure 21 in the data sheet. Although the quiescent current is not specified in the EC table, it seems to be pretty constant across supply voltage.

2. Correct, the IQ is basically how much the amplifier needs to stay on. To measure any more current that may be needed to drive the load, you need to know your load and your output signal.

If your output is DC, I would recommend you use this method to calculate your answer. This resource covers calculations for both DC and AC (sinusoidal) outputs.

Let me know if you have any further questions.

Regards,

Daniel

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TLV9001: TLV9001 consumption