unisonic technologies co., ltd mc3361bp linear integrated circuit www.unisonic.com.tw 1 of 5 copyright ? 2010 unisonic technologies co., ltd qw-r108-010.d low voltage/power narrow band fm if ? description the utc mc3361bp is designed for use in fm dual conversion communication. it contains a complete narrow band fm demodulation system operable to less than 2.5v supply voltage. this low-power narrow-band fm if system provides the second converter, second if, demodulator. filter amp and squelch circuitry for communications and scanning receivers. ? features *low power consumption (4.0ma typ. at vcc=4.0v) *excellent input sensitivity (-3db limiting, 2.0 vrms typ.) *minimum number of external components required. *operating voltage: 2.5~7.0v ? applications *cordless phone (for home use) *fm dual conversion communications equipment ? ordering information order number normal lead free plating halogen free package packing MC3361BP-D16-T mc3361bpl-d16-t mc3361bpg-d16-t dip-16 tube mc3361bp-n16-r mc3361bpl-n16-r mc3361bpg-n16-r tssop-16 tape reel mc3361bp-n16-t mc3361bpl-n16-t mc3361bpg-n16-t tssop-16 tube mc3361bp-s16-r mc3361bpl-s16-r mc3361bpg-s16-r sop-16 tape reel mc3361bp-s16-t mc3361bpl-s16-t mc3361bpg-s16-t sop-16 tube
mc3361bp linear integrated circuit unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r108-010.d ? pin configuration
mc3361bp linear integrated circuit unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r108-010.d ? block diagram local osc 16 2 3 1 4 1.8k 15 14 13 12 squelch trigger with hysteresis 11 + - 10 9 af amp 8 5 6 if amp qual detector 7 1.8k
mc3361bp linear integrated circuit unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r108-010.d ? absolute maximum ratings (t a =25 c) parameter symbol rating unit max. supply voltage vcc (max) 10 v supply voltage range vcc 2.5 to 7.0 v detector input voltage v i(det) 1.0 vp-p rf input voltage (vc c R 4.0v) v i(rf) 1.0 vrms mute function v mute -0.5 ~ + 5.0 vpeak operating temperature t opr -20 ~ +70 c storage temperature t stg -65 ~ +150 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics (vcc=4.0v, fo=10.7mhz, f= 3khz, f mod =1khz, ta=25 c, unless otherwise specified) parameter symbol test conditions min typ max unit squelch off (v 12 =2v) 4.0 ma operating current icc squelch on (v 12 =gnd) 6.0 ma input limiting voltage v i(limit) -3.0db limiting 2.0 v detector output voltage v o(det) 2.0 vdc detector output impedance z o(det) 400 audio output voltage v o v in =10mv 100 160 mvrms filter gain g v f=10khz,v in =5mv 40 48 db filter output dc voltage v o(dc) 1.5 vdc trigger hysteresis of filter v th 50 mv mute switch-on resistance r on(mute) mute ?low? 10 mute switch-off resistance r off(mute) mute ?high? 10 m scan control ?low? output v l(scan) mute off (v 12 =2v) 0.5 vdc scan control ?high? output v h(scan) mute on (v 12 =gnd) 3.0 vdc mixer conversion gain g v(mixer) 24 db mixer input resistance r i(mixer) 3.3 k mixer input capacitance c i(mixer) 2.2 pf
mc3361bp linear integrated circuit unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r108-010.d ? application circuit 120k 510 audio volume murata cfu 455d in the above typical application, the audio signal is recovered using a conventional quadrature fm detector. the absence of an input signal is indicated by the presence of noise above the desired audio frequencies. this ?noise band: is monitored by an active filter and a detector. a squelch trigger circuit indicates the presence of noise (or a tone) by an output which can be used to control scanning. at the same time, an internal switch is operated which can be used to mute the audio. utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior writ ten consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
|
