List of figures

TDA7561

4/27

Doc ID 8326 Rev 6

List of figures

Figure 1.

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2.

Test and application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3.

Pins connection diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4.

Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 5.

Output power vs. supply voltage, RL = 2  

Figure 6.

Output power vs. supply voltage, RL = 4  

Figure 7.

Distortion vs output power, RL =2 

Figure 8.

Distortion vs output power, RL =4 

Figure 9.

Distortion vs. frequency, RL = 2  

Figure 10.

Distortion vs. frequency, RL = 4  

Figure 11.

Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 12.

Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 13.

Power dissipation and efficiency vs. output power (4

, SINE). . . . . . . . . . . . . . . . . . . . . . 11

Figure 14.

Power dissipation vs. average output power (audio program simulation, 4

) . . . . . . . . . . 11

Figure 15.

Power dissipation vs. average output power (audio program simulation, 2



Figure 16.

Turn-on diagnostic: working principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 17.

SVR and output behaviour (case 1: without turn-on diagnostic). . . . . . . . . . . . . . . . . . . . . 12

Figure 18.

SVR and output pin behaviour (case 2: with turn-on diagnostic) . . . . . . . . . . . . . . . . . . . . 13

Figure 19.

Short circuit detection thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 20.

Load detection thresholds - high gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 21.

Load detection threshold - low gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 22.

Restart timing without diagnostic enable (permanent) - Each 1 mS time,

a sampling of the fault is done . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 23.

Restart timing with diagnostic enable (permanent). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 24.

Data validity on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 25.

Timing diagram on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 26.

Acknowledge on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 27.

Flexivatt25 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 24

Figure 28.

Flexivatt25 (horizontal) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . 25