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AN12945A Datasheet - Page 11

Download or read online Panasonic Corporation AN12945A Monophonic Audio Power IC With Built-in AGC pdf datasheet.
Also see for AN12945A: Datasheet #2 (5 pages)



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AN12945A
Technical Data (continued)
I/O block circuit diagrams and pin function descriptions (continued)
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
Pin
Waveform
No.
and voltage
V
CC
14
DC 3.3 V
V
(3.0 V)
REG
Ripple removal
condenser
terminal for the
15
regulator
15
DC 1.5 V
V
REG
V
REF
16
16
DC 1.5 V
Input amplifier
output terminal
18
DC 1.5 V
AC –22 dBV
(Gv = 0 dB)
AC –28 dBV
(Gv = +6 dB)
V
(3.0 V)
REG
Input amplifier
negative return
terminal
17
17
DC 1.5 V
Internal circuit
V
(3.3 V)
CC
243k
9k
207k
(3.0 V)
180k
180k
V
(3.0 V)
REG
18
SDF00041BEB
Impedance
Description
It is the power V
CC
the regulator circuit to create the inner
power V
with the voltage.
REG
It is separating from V
inside.
To remove a power ripple with the
regulator circuit to create the inner
power V
, it puts a condenser.
REG
With the pin to fix the bias voltage ( the
operation point ) of the system which the
Εntry impedance
inner power (V
REG
= About 90 kΩ
1/2 V
(V).
REG
To remove noise , it connects a
condenser with the interval of GND.
The output
Impedance
It is the output terminal of the input
equal to or less
amplifier.
than 10 Ω
It is the negative feedback of the input
amplifier.
Entry impedance
=the high
The gain of input amplifier can be set up
impedance
by connecting external resistance to Pin
18 and Pin 17.
terminal to supply
of Pin 5 fully
CCSP
) works , it becomes
11

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