LA1787M Datasheet, PDF (54/54 Pages) Sanyo Semicon Device – Single-Chip Tuner IC for Car Radios

LA1787M
AM Second-Channel Interference
Rejection Characteristics
20
Δ40 kHz
0 desire mod ON
100 dBμ
40 _dBμ ⁶⁰ dB_{μ 80 dBμ}
–20
40 dBμ
desire
–40 _{mod 60 dBμ}
OFF
80
dB^μ
100
dB^μ
50/3Ω ^15pF ANT IN
–60
fD=1MHz
fm=1kHz 30%
50Ω 50/3Ω
50Ω
50/3Ω ^VIN
30Ω
65pF
fu=1040kHz
–80
fm=400Hz 30% JIS ANT. DUMMY
40
60
80
100
120
140
ANT input, IN — dBμ
AM Second-Channel Interference
Rejection Characteristics
20
Δ400kHz
0
desire mod ON
100 dBμ
40 _dBμ 60 dB_{μ 80 dBμ}
–20
–40
–60
–80
40
40 dBμ
desire
mod
OFF
60 dBμ
fD = 1 MHz
fm = 1 kHz 30%
50/3Ω ^15pF ANT IN
50Ω 50/3Ω
50Ω
50/3Ω ^VIN
30Ω
65pF
fu = 1400 kHz
fm = 400 Hz 30% JIS ANT. DUMMY
60
80
100
120
140
ANT input, IN — dBμ
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PS No.6655-54/54