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LA1845N Arkusz danych(PDF) 4 Page - Sanyo Semicon Device

Numer części LA1845N
Szczegółowy opis  For Home Stereo IC Single-Chip Tuner IC
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Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA1845N Arkusz danych(HTML) 4 Page - Sanyo Semicon Device

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LA1845N
No.7185-4/9
Test Circuit
Pin Functions
Pin No.
Pin function
Pin voltage (V)
Pin description
Equivalent circuit
1
FM IF input
Vreg
Input impedance ri = 330Ω
1
3
2
AM mixer output
VCC
Connect the mixer coil between this pin and VCC.
2
3
REG
2.3
Vreg = 2.3V
3
4
AM IF input
Vreg
Input impedance ri = 2kΩ
4
5
GND
0
6
7
Tu-LED
ST-LED /
AM-IF output
VCC
VCC
Active low
Open collector
6
7
8
FM detector
VCC
The 600BEAS-10471 (Toko Mfg. Co., Ltd.) is
recommended for detector coil.
9
VCC
10
AM / FM IF
counter output,
output control
switch, mute
switch
0
V10 ≤ 0.5V : Reception state
1.4V
≤ V10 ≤ 2.2V : Muting on
V10 ≤ 3.5V : IF counter output and muting on
10
Continued on next page.
+
+
+
1
2
5
6
10
24
23
22
21
20
19
18
17
16
15
14
13
VCC
5.0V
Top view
MONO
+
OSC
BUFF
FM-IN
(10.7MHz)
+
AM/FM
IF-BUFF
SEEK
1
μF1μF
+
0.47
μF
3k
Ω
50k
Ω
33
μF
75
Ω
300
Ω
6.8k
Ω
5.6k
Ω
1000pF
20pF
39pF
1000pF
0.047
μF
0.047
μF
22
μF
0.047
μF
0.0047
μF
0.015
μF
0.015
μF
10
μF
0.1
μF
0.01
μF
+
4.7
μF
0.047
μF
3.3
μF
39MH
HW50425
50k
Ω
10k
Ω
1000pF
NORMAL
TU-LED
ST-LED
V-SD
V-ST
AM IF
600BEAS-10471
Detector coil
Discriminator
HW6215
7
4
9
8
11
3
AM
FM
12
20pF
1000pF
50
Ω
20k
Ω
20k
Ω
65k
Ω
AM-IN
(1MHz)
LPF
A
LPF
A
0dB
LOUT
ROUT
LA1845N


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