an7191nz Panasonic Corporation of North America, an7191nz Datasheet - Page 13

• 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)
4. Ripple filter (continued)
5. GND terminal
6. Cooling fin
Technical Information (continued)
6) After power off (STB-low), it takes about 10 seconds or less for the total circuit current to become the stand-
1) Be sure to short-circuit each
2) For each GND terminal, the one-
3) Each GND terminal is not electrically short-circuited inside. Only pin 8 is connected with the substrate.
4) Pin 9 is input signal GND. Connect only pin 9 with Pre-GND.
1) The radiation 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 not necessary to connect
by current (10 A or less). In order to reduce the inspection time at the set, insert the resistor of approx. 47 k
between the ripple filter terminal and GND. This can shorten the time to reach the standby current.
GND terminal of pin 3, pin 8,
pin 9 and pin 14 at the outside
of the IC when use.
point earth, referenced to the
GND connection point of elec-
trolytic capacitor between the
supply terminal and GND, is
most effective for reducing the
distortion. Even in the worst case, ground pin 8, pin 9 of input GND separately from all the other GND
terminals.
through the substrate.
Otherwise, IC lead failure may occur.
with GND in use, but connect with the power GND when connect with GND.)
33 F
12
200 A
30 k
1
20 k
20 k
Figure 4
3
1.2 mA
_
V
current source
Figure 5
REF
3.5 k
V
Constant
8
CC
3.5 k
_ g
9
Protection
circuit
14
To GND of input
AN7191NZ
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