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參數(shù)資料
| 型號： | AN12942B |
| 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)： | 12/31頁 |
| 文件大?。?/td> | 577K |
| 代理商： | AN12942B |
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12
SDC00047AEB
AN12942B
Technical Data (continued)
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.
The output
impedance
:
Equal
to or less than
about 10
The entry
impedance
:
About 200 k
Signal less time:
Constant current
source
Signal's there
being:
The output
impedance
:
About 200
Impedance
It is the output pin of the line amplifier.
Line out
AC:
9.17 dBV
DC : 2.25 V
29,
30
It is the standard voltage pin to fix the
DC bias of the speaker output. It
connects a condenser to remove a ripple.
V
REF
(SP)
DC: 2.20 V
43
It is the GND pins of the signal system.
It is connected with the substrate
potential of the IC. Pin 15, pin 42
connect with the lead frame of the IC.
GND
DC: 0.0 V
9,
15,
26,
38,
42,
48
It connects a condenser for the peak
detection. It is the circuit which detects
a peak after rectifying the audio signal
of the audio signal automatic detection
circuit in both waves. By changing a
capacity value, the time which the power
saving depends on in case of the
switchover which is without signal with
signal's there being can be changed.
Audio automatic
detection
detection pin:
Signal nothing
DC: 0.0 V
Signal’s there
being
DC: 2.0 V
7
Description
Inner circuit
Waveform
and voltage
Pin
No.
400k
43
V
_SP
(5.0 V)
400k
7
40k
100
V
REG
(4.5 V)
Pin 29,
Pin 30
V
REG
(4.5 V)
9.6k
17.4k
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