MoroRo6A Low-Power Narrowband Receiver includes dual convers

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MoroRo6A Low-Power Narrowband Receiver includes dual convers

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Order this document MC336~
MoroRo6A
Low-Power Narrowband Receiver
includes dual conversion with oscillators, mixers, quadrature discriminator, meter drive/carrier detect circuitry. MC3362 also buffered first second local "oscillator outputs comparator circuit detection.
MC3362
Complete Dual Conversion Circuitry Voltage: Drain Current (3.6 (Typical) Vdc) Excellent Sensitivi& SINAD Input Voltage pVrms (Typical)
Externally Adjustable Carrier Detect Function Number External Parts Required Manufactured Using Motorola's MOSAIC@ Process Technology
MC13135 Preferred Designs
Figure Connections Representative Figure Simplified Application iq.~@Frequency Synthesized Re@~&r, Input ,.:F+::+, `,.$* &$*8j$Y" to200MHz
Block Diagram
Wxer Inpti Ou@ti Emitier Base Wxer Ou@ut
Mixer Inpti Vericsp Control Tank Tank Otiput Mxer O@ut Mixer Input Mixer Input Comparator O@ti Comparator Input Detester Odpti
.a?s~era~ .2~o
0.41pH
Umiter Inpti Limiter Dmupling hmiter Dmuphng Metar Drive Carrier Dated
`opLLorprescaler
Ceramic Filter 10.7MHz
Carrier Detect Indicator 39-K
Data
Quadrahra Coil
660VH 180pF
Motorola,
ORDERING
Inc. 1996
INFORMATION
MC3362
MWIMUM RATING 25°C, unless otherwise noted)
Rating Power Supply Voltage (See Figure Operating Supply Voltage Range (Recommended) Input Voltage (Vcc Junction Temperature Operating Ambient Temperature Storage Temperature Range Range Vdc) 1,24 Symbol VCC(max) Value -40to Unit Vrms
Vi-24 Tstg
ELECTRICAL
CHARACTERISTICS
(VCC Vdc, 49.7 MHz, Deviation=
unless otherwise noted) Characteristic Drain Current (Carrier Detect Figure Input -3.0 Limiting Inputfor SINAD (See Figure Input Impedence
.,,y.:.! :.::,b.,$;, *,$3$,, ~.,$.! Y<)z kHz, 25°C, Test C[rcuit Hgur~,~:t;~ .s.~:.: -65to +150 *+:;?* .$$$&50 ;?$;'~350 0.64 ,,tg $;';$"$" >,<3' z~ij<.~h "2iJ Unite VVrms pVrms mVrms mVrms nNdB KVrms
Series Equivalent
Recovered Audio signal level Noise Output signal level Carrier Detect Threshold Meter Drive Slope Input N)/N (See' Figure First Mixer Order Intercept (Input) First Mixer Input Resistance (Rp) First Mixer Input Capacitance (Cp) (below Vcc)
`i<y ~i,)~. *~&::*s!,&
Conversion Voltage Gain, First Mixer Conversion Voltage Gain, Second Mixer Dector Output Resistance
,,., ;.$,~{.+fi, .$!ll, ,\,,.$*. .'*.i*, ,$\s* .,.,,. ;)th\ ,*,.!.*,.,>,,<$. ,,{,: .'\*t, >.,, .*:S$,h,?:: j::i., ,.i,f,. ,Ggf$ >.,? ,.), .x>,,, ,`,\:i:>i,t,,, ",!. ~,.,,, .,~$. ,.'$ "rFigure3. Test Circuit
J""''*~$"~
Input
,$4,* !$,3. -:.$,., ,,;r-~?::j .,>\J/* ,~,, ;*.,.-,,,., \\*. ~i$. ~,?,:j ,,,{$,+),~.$it., `.~:::>$:t< tit,, .*W. ~;i,.~t:,.,jt .<+.,
FL1m
MC3362
muRata CFU455D Toko LFM551 FL2: muRata SFEI 0.7MA TokoSK107M%A&l
180pF
TokoRMG2A6597HM NOTE: AN960 Additional Design Information.
MOTORO~
ANALOG DEVICE DATA
MC3362
Figure Drain Current, Recovered Audio versus Supply
Figure lMeter versus input
8"0~aoo
ICC, Carr. Det.
MC3362
i~:=
ICC, Carr. Det. High
-130-120
-110-100
INPUT (dBm)
Figure Signal Levels
C~-fimA h~;vevn,,
N30%AM
MC*Y -130-120-110-100
INPUT (dBm)
Figure Detector Output versus Frequency
-100 (kHz) INPUT (dBm) RELATIVE INPUT FREQUENCY
MOTOROLA
ANALOG DEVICE DATA
MC3362
Figure Board Test Circuit
Oscillator Configuration Used Synthesized Receiver)
Carrier Detect
Resonator
-,,,,.$,
(Mc3$~@~&.
Crystal used series mode reeonant load capacity specified), overtone, This method proven adequate fundamental mode, overtone cystals. inductor capacitor will need changed other frequency crystals. AN980 further information,
MC3362
Figure Component Placement View Showing Crystal Oscillator Circuit
Figure 11A. Oscillator Component View
NOTES: Recovered Audio components maybe deleted when using 5i,MeX.Drive cannot used simultaneously with Carrier Detect output. data output. a~log meter drive, remove components Iabelled measure Carrier Detect components must deleted order obtain `i:?@eter urrent (4-12@) through ammeter Vcc. linear Meter Drive output. With these components place $":~:~. type oscillator circuit maybe used with output circuit Meter Drive outputs serve only trip Carrier Detect indicator. configuration. Data Output components should deleted applications `,,,,,.`~i{. Oscillator Coil: Coilcraft 10/42 10.5 turns, 0.41 Cryetal where only audio modulation used. combined audio/data "<$:~x~' Oscillator circuit trim coil, 0.68 Coilcraff 287-A. applications, 0.047 WFcoupling capacitor will distortion 8.0.47 Coi[crsff M128&A. Input network used match first mixer autio, pull+own resistor r~uire~$ input impedance ,.,f$~ UseToko7MC81282 Quadrature coil. b:.,
:~.:>. `~t: *,&,,, :t:i'~.'~ ,i.? <?~+, *,*$-'
\.t:,\,,
.~:t,,,J.' `,I::J,$,. `4&.f CIRCUIT DESCRIPTION ,$,:;,.\.,,\\. MC3362 complete nayQ~&Rd receiver from antenna input audio preamp out~t: voltage dual conversion design yields lo~" pQWr drain, excellent sensitivity good image r$J~<@Jfi narrowband voice data link applications. .,,,, typical app@al]$~'[Figure first mixer amplifies signal ,Qnd@$Yetis input 10.7 MHz. This signal ,:~$ ehernally into second mixer, which f~plifies signal converts si~fiker external bandpass filtering, int~yt$~'''hiting amplifier detection rcuitry. The, "It> audio~s~e~ered using conventional quadrature detector. provided internally, #~J~R,&put signal level monitored meter drive circuit~ \&w~ detects amount limiting limiting amplifier. ~z~'voltage meter drive determines state ~arrier detect output, which active low.
Twlw,$ltefing
APPLICATIONS INFORMATION first local oscillator using free-running tank, using synthesis, dtiven from external c~stal oscillator, been MHz.* buffered output available second local oscillator common base Colpitts type which typically 10.245 under crystal control. buffered output available Pins interchangeable. mixers doubly balanced reduce spurious responses. first second mixers have conversion gains (typical), respectively, seen Figure Mixer gain stable with respect supply voltage. both conversions, mixer impedances layout designed allow user employ cost, readily available ceramic filters. Overall sensitivity rejection shown Figure input level N)/N using W-pole post-detection filter pictured.
first local oscillator (Hns and/or driven from strong external source (100 mVrms), mixer used over MHz.
MOTOROLA ANALOG DEVICE DATA
Following first mixer, 1,0.7 ceramic band-pass filter recommended, 10.7 filtered signal then into second mixer input pin, other inputpin being connected VCC. (VCc) treated common point emitier-driven signals. kHz' typically filtered using ceramic bandpass filter then into limiter input pin. limiter sensitivity limiting, flat MHz. output limiter internally connected quadrature detector, including quadrature capacitor. parallel LCtank needed externally from 12to VCC. shunt resistance included which determines peak separation quadrature detecto~ smaller value will increase spacing linearity decrease recovered audio sensitivity. data shaping circuit available coupled recovered audio output circuit comparator which designed detect zero crossings
modulation. Data rates typically limited 1200 baud ensure data integrity avoid adjacent channel "splatier." Hysteresis available connecting high valued resistor from Values below recommended input signal cannot overcome hysteresis. meter drive circuitry detects input signal level monito~ng limiting amplifier stages. Figure shows unloaded current versus input power. ,,~eter drive current used directly (RSSI) be.;~lto trip carrier detect circuit specified input p~l~o this, pick trip level dBm. Read ~%~pnding current from Figure pick resistor SU.?:IE%; .,,,$ ~s,, 0.64 l~;~ ,~'" Hysteresis available connecti@t*&\~#fi" valued resistor between Pins 11,Thq,fo@&
MOTOROLA
ANALOG
DEVICE DATA
OUTLINE DIMENSIONS
SUFFIX
PWSTIC CASE
PACWGE 72~3 NOTES CHAMFEREO CONTOUR OPTIONAL OIMENSION LTOCENTER FLEAOS FORMEDARALLEL DIMENSIONING TOLERANCING ANSI ,*!. Y14.5M, 1982, `*{,3, eg.<.\.*:,2,\, CONTROLLING DIMENSION INCH.
ISSUE
NOTES DIMENSIONING TOLERANCING ANSI
Y14.5M, 1982. CONTROLLING DIMENSION MILLIMETER, DIMENSIONS INCLUOE MOLO PROTRUSION, MAXIMUM MOLD PROTRUSION 0.15 (0,006) SIDE. INCLUOE DAMBAR OIMENSION DOES
PROTRUSION, ALLOWABLE DAMBAR PROTRUSION BE0.13(0.005) SHALL TOTAL MCESSOFOOIMENSION MAXIMUM
MATERIAL CONOITION,
`{.i$
`:!~t>+,i<$,i
Motorola rese@~ right make changes without furfher notice products herein. Motorola makes warranty, representation guarantee regarding suitebili~roducts particular purpose, does Motorola assume liabili~ arising apphcation product circuit, specific@d,#ms liability, including without fimifefionconsequential incidental damages. Typical" parameters which maybe provided Motorola data:h~s~tiorspecificationscan anddovaryin different applicationa actual performance mayvaryovertime. Alloperetingparemeters, Inciuding'Typicals" ~ated each customer aP,PfiCafiOn customer's technical experts. Motorola does convey license under patent rights rights oW~''%tOrOla products deslgnad, intended, authorized components systems intended surgical implant into body, other :Wf!$fionsintended suPPofior sus~n iife, orforanY other application which failure Motorola product could create situation where personal injuy ,efh occur. Should Buyerpurchaseor Motorola productsforanysuch unintended orunauthonzed application, Buyer shall indemnify hold Motorola officers, employees, subsidiaries, affiliates, diatnbutors harmless against claims, costs, damagea, expenses, reasonable attorney fees arising directiy indirectly, claim personal injury death associated with such unintended unauthorized use, even such claim alleges that Motorola negligent regarding design manufacture part. Motorola and@ registered trademarks Motorola, Inc. Motorola, Inc. Equal Opportunity/Affirrnafive Action Employer. Mfex trademark Motorola, inc. reach USA/EUROPE/Locstions Hsted: Motorola Literature Dsbfbution; P.O. 5405, Denver, Colorado 80217. 30=7+2140 l+til-2447 Mfax~: RMFWO@email.sps.mot.com INTERNET http://motorola.com/sps TOUCHTONE 602-2=609 Canada ONLY 1+OG77+1848 JAPAN Nippn Moto~a Ltd; SPD, Stitsgic Planning~cs, --1, Nishffiotanda, Shinagawa-ku, To~o 141, Japan. 81+S487+88 A&W/PACIFIC: Mototia Semicond~ors Ltd; Ping Indusfdal Road, N.T, Hong Kong, 852-2M29298
MOTOROLA
MC336~D

MoroRo6A Low-Power Narrowband Receiver includes dual convers

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