Datasheet

Table Of Contents
Applications information TDA7292
14/22 Doc ID 15775 Rev 5
5 Applications information
Warning: SOA protection:
If the TDA7292 is operated without a load connected to the
output terminals, the SOA protection circuit could be
activated when a high amplitude and high frequency signal is
applied to the input.
The frequency and amplitude of the signal able to trigger the
protection is a function also of the supply voltage level used.
If the above mentioned condition is possible when the
speakers are not connected, it is recommended to connect
the input to ground or add a dummy resistive load. For
example, a 1-kΩ / 1-W resistor can be used at Vcc = ±26 V. If a
lower supply voltage is used, the resistor value must be
decreased accordingly.
5.1 Applications with dual supply
Figure 18. Test and applications circuit (dual supply)
R3
IN (L)
C1
R2
C3
MUTE/
ST-BY
GND
IN (R)
C2
R7
R10
C8
C9
OUT (L)
OUT (R)
C6
C4
+V
S
3
5
7
9
6
11
2
4+
+
-
-
D94AU087B
RL (L)
RL (R)
+V
S
-V
S
R9
R5
IN- (L)
8
10
IN- (R)
1
SW1
R1
DZ
R4
SW2
C7
R8
R6
C5
Q1
ST-BY
MUTE
SW1 position SW2 position Mode
BAStandby
BBStandby
AAMute
ABPlay
A
A
B
B