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LA1844M Fiches technique(PDF) 6 Page - Sanyo Semicon Device

No de pièce LA1844M
Description  For Home Stereo Single-chip Tuner IC
Download  11 Pages
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Fabricant  SANYO [Sanyo Semicon Device]
Site Internet  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA1844M Fiches technique(HTML) 6 Page - Sanyo Semicon Device

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LA1844,LA1844M
No.7930A-6/11
Pin Functions
Pin No.
Function
Pin voltage
(V)
Equivalent circuit
Notes
1
FM IF input
Vreg
Input impedance Ri = 330Ω
2
AM mixer output
VCC
Connect the mixer coil between this pin and VCC
3
REG
2.1
Vreg = 2.4V
4
AM IF input
Vreg
Input impedance Ri = 2kΩ
5
GND
0
6
7
Tu-LED
ST-LED / AM-IF
output
VCC
Active low
Open collector
8
FM detector
VCC
The 600BEAS-10471 (Toko Mfg. Co., Ltd.) is
recommended for detector coil.
9
VCC
5.0
10
AM / FM IF
counter output,
output control
switch,
mute switch
0
V10 ≤ 0.5V : Reception state (Normal)
1.4V
≤ V10 ≤ 2.2V : Muting on (Mute)
V10 ≥ 3.5V : IF counter output and muting on
(Seek)
11
Phase comparator
low-pass filter
(AM/FM switching)
VCC-1.0
The device operates in AM mode when a current
of over 200
μA flows from pin 12.
Continued on next page.


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