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LA1824 Datasheet(PDF) 2 Page - Sanyo Semicon Device

Part No. LA1824
Description  Single Chip Tuner IC for Use in Radio/Cassette Products with Manual Tuning
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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LA1824 Datasheet(HTML) 2 Page - Sanyo Semicon Device

 
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LA1824
No.6855-2/10
Operating Characteristics at Ta = 25
°C, VCC = 4.5 V, in the specified test using
the IC179-2 socket (Yamaichi Electric Co.,Ltd.)
FM front-end characteristics at fc = 98 MHz, fm = 1 kHz, 22.5 kHz dev
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Local oscillator voltage
VOSC
No input, fosc = 108.7 MHz, the pin 20 output
15
30
60
mVrms
with FET buffer gain ·=· --10 dB
Input limiting voltage
3 dB L.S.
Referenced to VIN = 60 dBµV EMF,
--
13
-- dB
µV EMF
22.5 kHz dev, a 3 dB down input
Quieting sensitivity
Q.S.
30 dB quieting sensitivity
--
12
-- dB
µV EMF
FM IF characteristics (monaural) at fc = 10.7 MHz, fm = 1 kHz, 75 kHz dev
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Quiescent current
ICC(FM)
No input
7.0
13.7
20
mA
Demodulation output
VO
VIN = 100 dBµV, the pin 16 output
130
190
260
mVrms
Signal-to-noise ratio
S/N
VIN = 100 dBµV, the pin 16 output
62
70
--
dB
Total harmonic distortion (mono)
THD
VIN = 100 dBµV, the pin 16 output
--
0.4
1.2
%
Input limiting voltage
3 dB L.S.
Referenced to VIN = 100 dBµV,
21
32
42
dB
µV
75 kHz dev, a 3 dB down input
Station detector sensitivity
SD-ON
No mod, an input level great enough to turn
--
33
--
dB
µV
on the station detector
FM IF characteristics (stereo) at fc = 10.7 MHz, fm = 1 kHz, L + R = 90 %, Pilot = 10 %
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Separation
SEP
VIN = 100 dBµV, L modulation, the pin
25
40
--
dB
16 output/the pin 17 output
Stereo on level
ST-ON
VIN = 100 dBµV, the pilot modulation
1.5
3.5
6.3
%
search that V8 < 0.5 V
Total harmonic distortion (main)
THD
VIN = 100 dBµV, Main modulation, the pin
--
0.5
1.2
%
16 output
AM characteristics at fc = 1000 kHz, fm = 1 kHz, 30 % modulation
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Quiescent current
ICC(AM)
No input
5.0
8.5
15
mA
Detector output
VO(1)
VIN = 23 dBµV, the pin 16 output
18
40
70
mVrms
VO(2)
VIN = 80 dBµV, the pin 16 output
50
85
130
mVrms
Signal-to-noise ratio
S/N(1)
VIN = 23 dBµV, the pin 16 output
15
20
--
dB
S/N(2)
VIN = 80 dBµV, the pin 16 output
47
53
--
dB
Total harmonic distortion
THD(1)
VIN = 80 dBµV, the pin 16 output
--
0.5
1.3
%
THD(2)
VIN = 107 dBµV, the pin 16 output
--
0.5
1.5
%
Station detector sensitivity
SD-ON
No mod, an input level great enough to turn
--
26
--
dB
µV
on the station detector


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