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TPA6100A2: looking for the lowest Supply Current OPAMP for driving 2X32 Ohm speaker of the headset
Part Number: TPA6132A2
Hi TI Support,
Question to Idd supply current to the TPA6132A. I'm very confusing to the data sheet and EVM documents.
From The TPA6132A2 Data sheet, I read that, Table 2, Design Parameter Shown Current is only 3mA to 3.2mA, with input voltage range from 2.2V to 5.3V.
But, on the TPA6132A2 EVM document specified the supply current Idd =0.5A Maximum.
Please confirm that why the values were a lot different.
I do want to have a low current supply for driving 2 X32 Ohm speakers of the headset, please provide me which is the best solution?
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In reply to Ivan Salazar:
Does TI have the current value for that condition (@ 2.5VDC, 2X32 Ohm speakers 1Khz Tone input) ?
In reply to DaveLee75:
Hi IVAN, Would you please let me know why that High to compare to
Table 2, Design Parameter Shown Current is only 3mA to 3.2mA, with input voltage range from 2.2V to 5.3V.
So what is these values (3mA to 3.2mA)?
At 2XAAA batteries, I can not have to pay that 56-67mA
What is the Best solution for less current load (2 X32 Ohm) Speakers for portable devices
Many Thanks for your reply
Thanks for your input. I'm looking forward to seeing your latest update.
I performed some listening and current measurement test and got some information as below table. The test setup is the following:
I did this test only with a current meter in series with the bench supply, So take these values as reference and not a complete trustworthy source.All devices have very good audio quality. TPA6133A2 is the one that might sound most distorted but it is most likely due to the fixed +4dB gain.
The device that shows the lowest consumption levels is TPA6141A2, which is Class-G device.
Also please take into account that this test was performed so that all devices operated under similar circumstances, it does not have anything to do with output power.
Best regards,-Ivan SalazarApplications Engineer - Low Power Audio & Actuators
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