Figure 18. Turn ON/OFF suggested sequence

PLAY

OFF

ST-BY

MUTE

MUTE

ST-BY

OFF

5V

5V

+Vs

(V)

+35

-35

VMUTE

PIN #10

(V)

VST-BY

PIN #9

(V)

-Vs

VIN

(mV)

IP

(mA)

VOUT

(V)

In addition to the overload protection described above, the device features a thermal shutdown circuit which

initially puts the device into a muting state (@ Tj = 145 °C) and then into stand-by (@ Tj = 150 °C).

Full protection against electrostatic discharges on every pin is included.

Figure 19. Single signal ST-BY/MUTE control circuit

1N4148

10K

30K

20K

10µF

10µF

MUTE

STBY

MUTE/

ST-BY

TDA7294

Protections

DS0013 - Rev 8

page 15/31