BL3361 LOW POWER NARROW BAND FM IF BL3361 DESCRIPTION The B L3 361 is de sign e d for u se in FM d ua l co n ve rsio n co mmu n ica tio n. It c on ta ins a co mple te na rro w b and FM d e modu la tio n syste m o pe rab le to less than 2.0V su pp ly vo lta ge. This lo w po we r na rrow ban d FM IF syste m p ro vide s th e sec ond co n verte r, sec ond IF, de modu la tor. Filte r A mp an d squ e lch c ircu itry fo r co mmu n ic a tion s a n d scan n ing rece ive rs. FEATURE Opera ting vo ltag e ran g e : 2 .0V ~ 8. 0V Lo w C urre n t c on su mp tion I C C =3 .9 mA T yp . (V C C =4.0V ) Exce lle nt inp ut sen sitivity (-3dB Li miting = 2. 6 µ Vrms T yp . ) Lo w nu mbe r of e xterna l pa rts requ ired Opera ting freq uen c y up to 6 0MHz Encap su lation： SOP -1 6 PIN CONFIGURATION Page1 www.belling.com.cn V1.2 BL3361 ABSOLUTE MAXIMUM RATINGS (Ta =25°C ) Charac te ristic S ymb o l Value Unit Vcc ( M A X ) 10 V Supp ly Vo ltag e Ra nge Vcc 2.0~8 .0 V Dete c to r Inp ut Vo ltag e VIN(DET) 1.0 Vp -p R F In pu t Voltage VIN(RF) 1.0 Vrms Mute Func tion VMUTE -0. 5~+5.0 Vpeak Junction Te mpe ra ture TJ 150 °C P ower Dissipa tion PD 1.5 W Opera ting Te mpe ra tu re Topr -30~+7 0 °C Storag e Te mpe ra tu re Tstg -65~1 50 °C Max imu m Su pp ly Vo lta ge ELECTRICAL CHARACTERISTICS (Un less o the rwise spe cified : Ta= 25 °C, Vcc= 4V, fo=10. 7MHz , fm= 1 kHz, ∆ f=±3kHz ) Charac te ristics S ymb o l Test cond itio ns Min Typ Max Unit ICC1 Sque lc h o ff (V 1 2 =2V) 2.9 3.9 4.9 ICC2 Sque lc h o n (V 1 2 =0V) 4.4 5.4 6.4 Audio Ou tpu t Vo ltag e VOUT Vin=10 mVrms 130 160 200 mV r m s Inp ut Limitin g Vo lta ge Tota l Ha rmo n ic Disto rtion Dete c to r Ou tp ut Voltag e Drop Voltage A F Ga in Lo ss Dete c to r Ou tp ut Resistanc e Filte r Ga in Filte r Ou tp u t DC Voltag e Mute Lo w Re sista nce VIN(Lim) -3dB Limiting 2.6 6.0 µV THD V O U T =1 70 mVrms 0.86 VNO No In pu t S igna l 1.2 1.5 ∆Gv Vcc=4V → 2V -3 -0. 6 dB 450 Ω 40 50 dB 1.0 1.3 1.6 VDC RON(Mute) Mute Switc h -on 30 50 Ω Mute H igh Re sista nc e ROff(Mute) Mute Switc h -o ff Sque lc h Cu rren t ROUT Gv Vin=5 mVrms, f= 10kHz VO(DC) Scan Con tro l Lo w VL(Scan) Mute o ff(V 1 2 =2V) Scan Con tro l H igh VH(Scan) Mute on (V 1 2 =0V) Trigge r H yste resis VTH Sque lc h o n /o ff 1.0 3.0 % 1.8 11 0 V mΩ 0.4 3.5 45 mA VDC VDC 100 mV r m s Mix e r Con ve rsion Ga in GV(Mix) 28 dB Mix e r Inp ut Re sista nc e Ri(Mix) 3.3 kΩ Mix e r Inp ut Cap ac ita nc e Ci(Mix) 2.2 pF Page2 www.belling.com.cn V1.2 BL3361 BLOCK DIAGRAM AND TEST CIRCUIT 16 14 13 12 8.2K 510 470K 15 AF Out 1.0uF 1.0uF 51 Filter In 10 11 0.01uF Audio Sca n SQ SW Mute Control Input Filter Out 10K 0.01uF Mixe r Input 10.7MHz 9 AF Am p Filter Am p + Squelc h Trigge r with Hyste resis De modulator Lim iter Am p Mixe r 52K 50K 10pF 1.8K Osc illator 1.8K MURATA CFU 455D 6 Page3 8 0.1uF Vc c 7 20K 5 0.1uF 10.245 MHz 4 0.1uF 68pF FL1 1 3 220pF 2 www.belling.com.cn V1.2 BL3361 APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS Page4 www.belling.com.cn V1.2 BL3361 OUTLINE DRAWING Page5 www.belling.com.cn V1.2