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參數(shù)資料
| 型號(hào)： | AN12943A |
| 廠商： | PANASONIC CORP |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Audio signal processing IC for notebook PC |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO56 |
| 封裝： | 0.300 INCH, PLASTIC, HSOP-56 |
| 文件頁數(shù)： | 14/32頁 |
| 文件大?。?/td> | 501K |
| 代理商： | AN12943A |
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14
SDC00057AEB
AN12943A
Technical Data (continued)
y
Circuit diagrams of the input/output part and pin function descriptions (continued)
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
It is the input pin of DC voltage for
switch A-1, A-2, A-3, B-1, B-2 output.
The entry
impedance
:
The
high impedance
BV
REF
DC:
V
20
It is the pin which controls EVR for
speaker amplifier and Headphone
amplifier.
The holding range with control voltage is
0 V to 3.3 V.
The entry
impedance
:
The
high impedance
EVR control for
SP and HP
DC:
V
19
With the pin to fix the bias voltage (the
operation point) of the system which the
inner power supply (V
REG
) works, it
becomes 1/2 V
REG
(V). To remove noise,
it connects a condenser with the interval
of GND.
The entry
impedance
:
About
250 k
V
REF
DC: 2.25 V
18
It change the switch A, B on/off.
High: On
Low: Off
The entry
impedance
:
About
100 k
Switch A/B
on/off
DC: 0 V
(at Open)
17,
33
It is the power supply (V
CC
) pin to supply
the regulator circuit to create the inner
power supply V
REG
with the voltage. It is
separating from V
CC
_SP of pin 1, pin 56
fully inside. It is desirable to separate as
far as it finishes coming out about the P
board pattern, too.
V
CC
DC: 5.0 V
16
Impedance
Description
Inner circuit
Waveform
and voltage
Pin
No.
Pin 17
33
100k
300k
V
SS
(
2.6 V)
450k
18
V
CC
(5 V)
550k
V
SS
(
2.6 V)
19
100k
V
SS
(
2.6 V)
20
V
REG
(4.5 V)
V
SS
(
2.6 V)
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