TPA3001D1: TPA3001D1

Tim Herbison

Part Number: TPA3001D1

Looking for a capacitor to filter the DC component at 1 to 10 Hz and 600 mV true rms.

Current Circuitry is as follows and is working into a 6 ohm voice coil load.04-08673 Sinewave Generator PWB Schematic.pdf

0 Matthew Miao over 4 years ago

Hi Tim,

What's the requirement of HPF? Cutoff frequency?

Regards,

Matthew

0 Tim Herbison over 4 years ago in reply to Matthew Miao

10 Hz

Additionally I have used the "Maximum Input Voltage Formula" in the datasheet and arrive at a value of 2.15 V!

Please confirm this calculation using a load impedance of 31.3 mH/6.05 ohm wound Helmholtz coil.

0 Sam(MPAA) Zhang over 4 years ago in reply to Tim Herbison

Hi Tim,

To calculate the maximum input voltage, you need to figure out how much power you need to drive.

As gain0=0, gain1=1, according to datasheet, Zi is about 104kOhm. Following eq5 on datasheet, you should have a ~1.5uF on the input.

Regards,

Hao

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