an7191nz Panasonic Corporation of North America, an7191nz Datasheet - Page 15

• Manufacturer Part Number: an7191nz
• Description: Dual 20 W Btl Audio Power Amplifier
• Manufacturer: Panasonic Corporation of North America

ICs for Audio Common Use
[2] Application note (continued)
10. Beep sound input function
11. Two IC use
S-GND
In(RR)
In(RL)
In(FR)
In(FL)
In(FL)
Technical Information (continued)
Standby
Power supply
Mute
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. 3.4 dB. With settings shown in the following drawing, it
3) The beep sound is outputted to output terminals pin 2 and pin 15 only.
microcomputer to pin 10 via the capacitor C1 for DC cut and the resister R1 for voltage gain adjustment.
is approx. 12.7 dB (f
Figure 8 shows the application circuit example when two ICs are used :
2.2 k
22 F
47 F
0.022 F
1 F
1 F
1 F
1 F
G
V
47 k
2 200 F
1/j C1
R1
1 kHz).
600
20 k
2
1 200
Beep
input
4.7 k
4.7 k
0.022 F R1
Figure 8
C1
25
47 k
10
V
V
REF
REF
4.7 k
2.1 V
2.1 V
Figure 7
1.2 k
1.2 k
20 k
20 k
0.22 F 0.22 F
0.22 F 0.22 F
0.22 F 0.22 F
0.22 F 0.22 F
2.2
2.2
2.2
2.2
AN7191NZ
28 dB
28 dB
Out(RR)
Out(FR)
Out(RL)
Out(FL)
15
15
2