an12940aa Panasonic Corporation of North America, an12940aa Datasheet - Page 7

• Manufacturer Part Number: an12940aa
• Description: Audio Signal Processing Ic For Notebook Pc
• Manufacturer: Panasonic Corporation of North America

■ Electrical Characteristics at V
■ Control terminal , The mode table
Pin No.
Pin No.
Note) * : The holding range of control voltage is shown in page 6 to page 7 of ■ Electrical Characteristics.
■ Terminal Equivalent Circuits
Pin No.
Voltage holding mode (continued)
It changes AGC-on level
Voltage range holding standard voltage
It changes AGC-on level
Voltage range holding Ref. −1 dB
It changes AGC-on level
Voltage range holding Ref. −3 dB
(continued)
39
17
35
18
36
28
29
7
5
Entry signal on/off
AGC on/off
Signal automatic
detection function
Standby on/off
SP power save on/off
The signal automatic detection Low sensitivity mode High sensitivity mode The sensitivity
changes sensitivity
At the time of AGC: on,
It changes on level.
Parameter
Pin name
Pin name
Equivalent Circuits

CC
Symbol
= 5 V, V
Automatic distinction Automatic distinction
V
V
V
36C
36H
36L
Reference level
Signal off
AGC off
Save on
(SP off)
STB on
CC_
Low
Low
off
on
SP = 5 V, (Ta = 25°C ± 2°C unless otherwise specified.)
SDC00044AEB
voltage of Pin
Conditions
V
pin of the speaker amplifier.
Because the big electric current
flows,it is desirable to separate from
the V
the board pattern.



It is the specifically designed power
CC
_SP:
CC
Signal on
Voltage of Pin
Reference level
AGC on
Save off
STB off
• Pin 28 is for R-channel
• Pin 29 is for L-channel
(SP on)
High
line to the other power pin on
on
−1 dB on
Open
Description
Min
0.0
2.5
by pin 35 has priority over
In case of signal off,
the alarm signal is always on.
The power saving operation
any automatic detection
difference is about 6 dB.

Open
Typ
Reference level


Remarks
−3 dB on
AN12940AA



High
Max
0.5
5.0
and Voltage
Corrugation

DC 5 V
Unit
V
V
V
7