an7195k Panasonic Corporation of North America, an7195k Datasheet - Page 9

• 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)
4. Ripple filter (continued)
5. GND terminal
6. Cooling fin
7. Shock noise
1) Be sure to short-circuit each GND terminal of
2) For each GND terminal, the one-point earth,
3) Each GND terminal is not electrically short-circuited inside. Only pin 8 is connected with substrate.
4) Pin 9 is input signal GND. Connect only pin 9 with Pre-GND.
1) The cooling fin is not connected with GND terminal by using Au wire. Only pin 8 is electrically connected
2) Always attach an outside heat sink to the cooling fin. The cooling fin must be fastened onto a chassis for use.
3) Do not give the cooling fin any potential other than the GND potential. Otherwise, it may cause breakdown.
4) Connection of the cooling fin with GND can reduce the incoming noise hum. (It is unnecessary to connect
1) STB on/off
2) Mute on/off
pin 3, 8, 9 and 14 at the outside of the IC in use.
referenced to the GND connection point of
electrolytic capacitor between the supply ter-
minal and GND, is most effective for reduc-
ing the distortion. Even in the worst case,
ground pin 8, 9 of input GND separately from
all the other GND terminals.
through substrate.
Otherwise, IC lead failure may occur.
with GND in use, but connect with the power GND when the cooling fin is connected with GND)
shock noise. In such a case, insert a capacitor of approx. 0.01 µF between the standby terminal and GND.
No shock noise is released. However, the changeover switch of the standby terminal may make a slight
No shock noise is released. Refer to the section on the mute function.
33 µF
12
30 kΩ
200 µA
30 kΩ
10 kΩ
10 kΩ
SDC00021BEB
Figure 4
AN7195K
V
Constant
current source
3.5 kΩ
REF
1
V
CC
3.5 kΩ
3
Protection
circuit
Quick discharge
circuit
8
Figure 5
To muting circuit
9
Detection
circuit
To GND of input
AN7195K
14
9