an12940aa Panasonic Corporation of North America, an12940aa Datasheet - Page 15
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an12940aa
Manufacturer Part Number
an12940aa
Description
Audio Signal Processing Ic For Notebook Pc
Manufacturer
Panasonic Corporation of North America
Datasheet
1.AN12940AA.pdf
(25 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
an12940aa-VF
Manufacturer:
PHI
Quantity:
1 472
■ Terminal Equivalent Circuits (continued)
Pin No.
40
39
38
36
V
40
REG
220 kΩ
44 kΩ
V
8 kΩ
8 kΩ
38
REG
(4 V)
216 kΩ
96 kΩ
48 kΩ
(4.5 V)
80 kΩ
Equivalent Circuits
120 kΩ
V
V
REG
15 kΩ
61 kΩ
REG
240 kΩ
40 kΩ
(4.5 V)
(4.5 V)
80 kΩ
90 Ω
36
SDC00044AEB
39
AGC detection pin:
It is the detection circuit to detect the
signal level of the AGC circuit of the
SP output for the clip prevention. It
connects a condenser for the detection.
The entry impedance: Unsettled
AGC on/off control pin:
It is the pin which controls the operating
operation of the AGC circuit of the
SP output for the clip prevention in
on/off. At the time of off, the AGC
circuit doesn't work.
The entry impedance: About 76 kΩ
Offset cancellation pin:
It is the condenser connection pin of
the offset cancellation circuit to remove
the DC offset voltage of the signal
which enters a distinction circuit in
the audio signal automatic detection
system. As the principle, it composes
HPF by entry impedance "R" and
connection condenser "C".
The entry impedance: About 80 kΩ
It changes AGC-on level:
It is the pin which changes the on
level of AGC.
Low : The standard level
Open: −1 dB of standards
High : −3 dB of standards
The entry impedance: About 120 kΩ
High: AGC-on
Low: AGC-off
Description
AN12940AA
and Voltage
Corrugation
DC 0 to 1 V
DC 2.25 V
DC 1.5 V
DC
15