TDA7563BPDTR(2006) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7563BPDTR
(Rev.:2006)

4 x 50 W multifunction quad power amplifier with built-in diagnostics feature

STMicroelectronics 

TDA7563B

Diagnostics functional description

Figure 21. SVR and Output pin behaviour (CASE 2: with turn-on diagnostic)

Vsvr

Out

Turn-on diagnostic

acquisition time (100mS Typ)

Permanent diagnostic

acquisition time (100mS Typ)

t

Diagnostic Enable

(Turn-on)

Turn-on Diagnostics data (output)

permitted time

Diagnostic Enable

(Permanent)

FAULT

event

Bias (power amp turn-on)

permitted time

Read Data

Permanent Diagnostics data (output)

permitted time

I2CB DATA

The information related to the outputs status is read and memorized at the end of the

current pulse top. The acquisition time is 100 ms (typ.). No audible noise is generated in the

process. As for SHORT TO GND / Vs the fault-detection thresholds remain unchanged from

30 dB to 16 dB gain setting. They are as follows: TDA7563B

Figure 22.

S.C. to GND x Normal Operation x

S.C. to Vs

0V

1.2V 1.8V

VS-1.8V VS-1.2V

VS

D01AU1253

Concerning SHORT ACROSS THE SPEAKER / OPEN SPEAKER, the threshold varies

from 30 dB to 16 dB gain setting, since different loads are expected (either normal speaker's

impedance or high impedance). The values in case of 30 dB gain are as follows:

Figure 23.

S.C. across Load x Normal Operation x

Open Load

0V

0.5Ω 1.5Ω

70Ω

130Ω

Infinite

D01AU1254

If the Line-Driver mode (Gv= 16 dB and Line Driver Mode diagnostic = 1) is selected, the

same thresholds will change as follows:

Figure 24.

S.C. across Load x Normal Operation x

Open Load

0Ω

1.5Ω 4.5Ω

200Ω 400Ω

infinite

D01AU1252

13/30

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