SA1021 Datasheet, PDF (4/6 Pages) Silan Microelectronics Joint-stock – FM RADIO RECEIVER FOR PORTABLE SYSTEM

SA1021
Fig.6 Stereo operation: signal/noise and channel
separation of SA1021 when used in the circuit of
Fig.8.
Fig.7 Stereo operation: channel separation as a
Function of audio frequency in the circuit of Fig.8.
TEST AND APPLICATION CIRCUITS
Fig.5 Test circuit for mono operation.
AC ELECTRICAL CHARACTERISTICS(STEREO OPERATION)Tamb=25°C; Vp=3V; measured in Fig.8;
frf=96MHz modulated with pilot ∆f=±6.75kHz and AF signal ∆f=±22.5kHz; fm=1kHz; EMF=1mV(e.m.f. at a
source impedance of 75Ω); r.m.s. noise voltage measured unweighted (f=300Hz to 20kHz); Unless otherwise
specified.
Characteristics
Sensitivity (e.m.f.)
for (S+N)/N=26dB
Selectitvity
Signal-to-noise Ratio
Channel Separation
Symbol
Test conditions
Min.
EMF See Fig.8,pilot off
--
S+300
--
See Fig.9.no modulation
S-300
--
(S+N)/N --
--
α
Vi=L-signal;
at frf =97MHz
--
fm=1kHz,pilot on: at frf =87.5MHz
α
--
and 108MHz
Typ.
11
40
22
50
26
14
Max.
--
--
--
--
--
--
Unit
µV
dB
dB
dB
dB
dB
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0 2004.07.31
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