an7195k Panasonic Corporation of North America, an7195k Datasheet - Page 11

• Manufacturer Part Number: an7195k
• Description: Dual 15 W Btl Power Ic For Car Audio
• Manufacturer: Panasonic Corporation of North America

I Technical Information (continued)
[2] Application note (continued)
10. Beep sound input function
11. Two IC use
Standby
S-GND
1) The application circuit using the beep sound input is shown in figure 7. Connect the beep signals from the
2) The voltage gain of beep sound terminal is approx. −4.5 dB. With settings shown in the following drawing,
3) The beep signal is outputted to output terminals, pins 2 and 15 only.
Figure 8 shows the application circuit example when two ICs are used :
In(RR)
In(RL)
Power supply
In(FR)
In(FL)
In(FL)
Mute
microcomputer to pin 10 via the capacitor C1 for DC cut and the resistor R1 for voltage gain adjustment.
it is approx.−19 dB (f = 1 kHz).
G
2.2 kΩ
22 µF
47 µF
0.022 µF
V
1 µF
1 µF
1 µF
1 µF
=
1/jωC1+R1+
150
47 kΩ
2 200 µF
25 k+300
Beep input
2
× 50
0.022 µF R1
4.7 kΩ
4.7 kΩ
C1
SDC00021BEB
47 kΩ
Figure 8
10
V
V
REF
REF
= 2.1 V
= 2.1 V
4.7 kΩ
4.7 kΩ
Figure 7
300 Ω
25 kΩ
300 Ω
25 kΩ
0.1 µF 0.1 µF
0.1 µF 0.1 µF
0.1 µF 0.1 µF
0.1 µF 0.1 µF
2.2 Ω
2.2 Ω
2.2 Ω
2.2 Ω
34 dB
34 dB
2.2 Ω
2.2 Ω
2.2 Ω
2.2 Ω
Out(FR)
Out(RR)
Out(RL)
Out(FL)
AN7195K
15
2
11