TLV320DAC3100-Q1: pin FMEA

Shinji Tsuji

Genius 12668 points

Part Number: TLV320DAC3100-Q1

Hi team,

Could you please advise pin FMEA of the following case?

1. HPL (27pin), HPR (30 pin) are default power down which means those 2pins are High-Z at power up, correct?

In that case, Could you please advise the impact if these pins short to SPKP or SPKM pin?

2. Could you please advise the pin FMEA of SPKM, SPKP pins short to 3.3V?

regards,

8 months ago

0 Ivan Salazar 8 months ago

TI__Guru* 99185 points

Hi Shinji,

I'm working on this request, will come back with further information within a day.

Best regards,
-Ivan Salazar
Applications Engineer

0 Ivan Salazar 8 months ago in reply to Ivan Salazar

TI__Guru* 99185 points

Hi Shinji,

Apologies for the delay, yes HP outputs are Hi-Z by default after power up, although if shorted to SPKx outputs there may be some distortion at the speaker.
You can refer to the table below:

Pin		Short to GND		Short to VDD		Short to Adjacent		Open Circuit
Name	No	Description	Class	Description	Class	Description	Class	Description	Class
SPKP	22/26	Overcurrent protection exercised. Class-D output disabled.	B	Overcurrent protection exercised. Class-D output disabled.	B	Overcurrent protection exercised. Class-D output disabled.	B	No output signal	B
SPKM	19/23	Overcurrent protection exercised. Class-D output disabled.	B	Overcurrent protection exercised. Class-D output disabled.	B	Overcurrent protection exercised. Class-D output disabled.	B	No output signal	B
HPL (Hi-Z)	27	No effect	D	No effect	D	Class-D output performance degradation if shorted to SPKP. No effect if shorted to HPVDD.	C	No effect	D
HPR (Hi-Z)	30	No effect	D	No effect	D	No effect	D	No effect	D

Best regards,
-Ivan Salazar
Applications Engineer

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TLV320DAC3100-Q1: pin FMEA