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LA1838 bảng dữ liệu(PDF) 4 Page - Sanyo Semicon Device

tên linh kiện LA1838
Giải thích chi tiết về linh kiện  Single-Chip Home Stereo IC with Electronic Tuning Support
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nhà sản xuất  SANYO [Sanyo Semicon Device]
Trang chủ  https://www.sanyo-av.com/us/
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Pin No.
Pin function
Pin voltage
Notes
Equivalent circuit
Vreg – 1.4
VCC
Vreg
Coil Specifications
• AM oscillator (for the DUT)
HW-50425 (Mitsumi)
Pin Functions
• IFT
YD-1073-1 (Mitsumi)
No. 5888-4/9
LA1838
3
1
2
4
6
A10633
Ž -  2T
 - ‘ 9T
 - x 86T
QO ≥ 80
L = 270
µH
3
1
2
4
S
S
6
YD-1073
SFU450B
A10634
 - x 58T
 - ‘ 7T
 - Ž 94T
fO = 450 kHz
QO = 110
A 180-pF capacitor is built in
With an external SFU450B
FM IF input
AM mixer output
1
2
Input impedance ri = 330 Ω
Connect the mixer coil between this pin and VCC
1
3
A10635
2
A10636
1
3
A10635
Vreg
FM IF input
bypass
3
Also used for the MPX regulator filter
4
A10637
Vreg
0 V
AM IF input
GND
4
5
Input impedance ri = 2 kΩ
6
7
A10638
VCC
VCC
TU-LED
ST-LED,
AF-IF output
6
7
Active low
Open collector
AM stereo IF output (pin 7)
The influx current must be held under 150 µA.
A10639
9
28
VCC
FM detector
9
The CDA10.7 MG74 (Murata Mfg. Co., Ltd.) is
recommended as the ceramic discriminator. A
device with a series resistance of 270
Ω must be
used.
VCC
8
Continued on next page.


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