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參數(shù)資料
| 型號： | LA4165M |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| 封裝： | 0.375 INCH, PLASTIC, MFP-24 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 1590K |
| 代理商： | LA4165M |
LA4165M
No. 2824-9/16
Continued from preceding page.
R10 : (15k
)
Recording head bias set resistor. Since the bias reference voltage is the filtered DC voltage on pin 19, excessive
current should not be drawn by R10, or the reference voltage on pin 21 will be affected.
The following diagram shows the internal circuit of the reference voltage generator.
DC Bias Equivalent Circuit
23
1.5V
2.8V
3.0V
22
21
20
19
18
VCC
VREF
IOUT2
IOUT1
4k
5k
The voltage on pin 19 drops by (IOUT1×100),
affecting the reference voltage.
100
R11 : (5 to 20k
)
Select this to match the electrostatic microphone output characteristics.
VR1 : (10 to 30k
)
Adjusts the output level in playback mode, and the voice sensor sensitivity in record mode.
VR2 : (5 to 30k
)
Motor speed fine adjustment.
LED : (Red LED)
Illuminated while recording. The LED starts to go out when VCC drops to 2.2V, and is completely extinguished
when VCC drops to 1.8V.
Pin No.
Symbol
Pin Name
Voltage [V]
1
VEQ C
Equalizer C
1.5
2
VPRE OUT
Pre out
1.5
3
VPWR IN
Power in
1.5
4
VOUT
Power out
1.5
5
ALC
Auto Level Cont
0
6
VOX CONT
Voice Ope Cont
0
7
VOX SW
Voice Ope Switch
3.0
8
VOX RECOV
Voice Ope Recorder
0
9
VOX C
Voice Ope C
0
10
VCC
GVN VCC
3.0
11
VOUT GVN
GVN out
12
GND GVN
GVN GND
0
13
VS GVN
14
VREF GVN
GVN VREF
1.2
15
GVN CONT
GVN Cont
16
LED
LED Drive
17
GND
Power GND
0
18
VCC
3.0
19
R.F
Ripple Filter
2.8
20
R/P CONT
REC/PLAY Cont
3.0
21
VREF
1.5
22
IN
Pre in
1.5
23
NF
Pre NF
1.5
24
GND
Pre GND
0
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