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參數(shù)資料
| 型號： | AN12942B |
| 廠商： | PANASONIC CORP |
| 元件分類： | 消費家電 |
| 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)： | 11/31頁 |
| 文件大?。?/td> | 577K |
| 代理商： | AN12942B |
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11
SDC00047AEB
AN12942B
The base entry
(With the
resistance)
In the range which
entry limiter does
not depend on, it is
high impedance.
The output
impedance: Equal
to or less than 1
Impedance
It controls on/off of the mute function of
the line output.
Line mute
control
31
It is GND pin for the speaker amplifier.
Pin 6 is for R-channel.
Pin 51 is for L-channel.
Because the big electric current flows, it
is desirable to separate from the GND
line to the other GND pin on the board
pattern. Also, it isn't connected with the
substrate potential in the IC.
GND_SP
DC : 0.0 V
51,
6
Output pins of speaker amplifiers.
It becomes BTL output.
Pin 54, pin 55 for L-channel positive
phase output
Pin 52, pin 53 for L-channel negative
phase output
Pin 2, pin 3 for R-channel positive
phase output
Pin 4, pin 5 for R-channel negative
phase output
To reduce voltage loss caused by the
wire resistance in maximum output, it
makes output 2 terminals.
When the speaker amplifiers save power,
DC voltage is also kept.
Speaker output
Pin 52, pin 53
Pin 2, pin 3
Positive phase
Pin 54, pin 55
Pin 4, pin 5
Negative phase
DC: 2.20 V
AC: 4 dBV
52,
53,
54,
55,
2,
3,
4,
5
Power supply pins specifically designed
for speaker amplifiers.
Pin 1 for R-channel.
Pin 56 for L-channel.
Because the big electric current flows, it
is desirable to separate from the V
CC
line
to the other power supply pins on the
board pattern.
V
CC
_SP
DC: 5.0 V
1,
56
Description
Inner circuit
Waveform
and voltage
Pin
No.
31
25 k
V
_SP
(5.0 V)
18k
3.6k
Pin 52,
pin 53,
pin 2,
pin 3
Pin 54,
pin 55,
pin 4,
pin 5
Technical Data
Circuit diagrams of the input/output part and pin function descriptions
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
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