SA1021 データシートの表示（PDF） - Silan Microelectronics

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SA1021

FM RADIO RECEIVER FOR PORTABLE SYSTEM

Silan Microelectronics 

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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