TDA7561 Просмотр технического описания (PDF) - STMicroelectronics

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TDA7561

Multifunction quad power amplifier with built-in diagnostics features

STMicroelectronics 

List of figures

List of figures

TDA7561

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Figure 28.

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

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

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

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

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

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

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

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

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

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

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

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

Power dissipation and efficiency vs. output power (4, SINE). . . . . . . . . . . . . . . . . . . . . . 11

Power dissipation vs. average output power (audio program simulation, 4) . . . . . . . . . . 11

Power dissipation vs. average output power (audio program simulation, 2

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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Doc ID 8326 Rev 6

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