AN7199 Panasonic Semiconductor, AN7199 Datasheet - Page 15

• Manufacturer Part Number: AN7199
• Description: Dual 20 W BTL power IC for car audio
• Manufacturer: Panasonic Semiconductor

ICs for Audio Common Use
[2] Application note (continued)
10. Beep sound input function
11. Two IC use
Technical Information (continued)
G
1) The application circuit using the beep sound input is shown in figure 8. Connect the beep signals from the
2) The voltage gain of beep sound terminal is approx. 6.2 dB. In the setting value of figure 8, it becomes approx.
3) The beep sound is outputted to the output, terminals pin 2 and pin 15.
Figure 9 shows the application circuit example when two ICs are used :
VBEEP
microcomputer to pin 10 via the capacitor C1 for DC cut and the resistor R1 for voltage gain adjustment.
Standby
S-GND
19.7 dB (f
In(RR)
22 F to 47 F
In(RL)
Power supply
In(FR)
In(FL)
Mute
Beep
1/j C1 R1
AN7198Z
AN7199Z
10 k
2.2 F
0.022 F
1 kHz).
47 k
2 200 F
R
2
nf
600
300
R
nf
15 k R
Beep input
2
nf
28 dB
34 dB
G
VA
0.022 F R1
G
VA
C1
10 k
10 k
47 k
Figure 9
10
V
V
REF
REF
7.8 k
6.3 V
6.3 V
10 k
10 k
15 k
15 k
Figure 8
R
R
nf
nf
Out(RR)
Out(FR)
Out(RL)
Out(FL)
G
G
AN7199Z
VA
VA
15
15
2