Power Narrowband MC3371 MC3372 perform single conversion receptio
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Power Narrowband
MC3371 MC3372 perform single conversion reception consist oscillator, mixer, limiting amplifier, quadrature discriminator, active filter, squelch switch, meter drive circuitry. These devices designed dual conversion communication equipment. MC3371/MC3372 similar MC3361/MC3357 IFs, except that signal strength indicator replaces scan function controlling driver which MC3361/MC3357. MC3371 designed parallel components, while MC3372 designed with either ceramic discriminator, parallel components. These devices also require fewer external parts than earlier products. MC3371 MC3372 available dual-in-line surface mount packaging. Wide Operating Supply Voltage Range:
POWER
SUFFIX PLASTIC PACKAGE CASE
LIFETIME
Input Limiting Voltage Sensitivity -3.0 Drain Current: Squelch Minimal Drain Current Increase When Squelched Signal Strength Indicator: Dynamic Range Mixer Operating Frequency Fewer External Parts Required than Earlier Devices
SUFFIX PLASTIC PACKAGE CASE 751B (SO-16)
MAXIMUM RATINGS
Rating Power Supply Voltage Input Voltage (VCC Detector Input Voltage Squelch Input Voltage (VCC Vdc) Symbol VCC(max) Tstg Value -0.7 +150 Unit Vrms
Vdc)
SUFFIX PLASTIC PACKAGE CASE 948F (TSSOP-16)
ORDERING INFORMATION
Device MC3371D MC3371DTB MC3371P MC3372D MC3372DTB MC3372P -30° +70°C Operating Temperature Range Package SO-16 TSSOP-16 Plastic SO-16 TSSOP-16 Plastic
Mute Function Mute Sink Current Junction Temperature Storage Temperature Range
NOTES: Devices should operated these values. "Recommended Operating Conditions" table provides conditions actual device operation. data available upon request.
CONNECTIONS
Mixer Input Mute MC3371 (Top View) Meter Drive Squelch Input Filter Output Filter Input Recovered Audio Crystal Mixer Input Mute MC3372 (Top View) Meter Drive Squelch Input Filter Output Filter Input Recovered Audio
Crystal
Mixer Output Limiter Input Decoupling
Mixer Output Limiter Input Decoupling Limiter Output Quad Input
Motorola, Inc. 1996
Quad Coil
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MC3371 MC3372
MC3371 MC3372
RECOMMENDED OPERATING CONDITIONS
Supply Voltage 25°C) -30°C +75°C) Rating Symbol Vlocal Value 0.0005 Unit mVrms mVrms mVrms mVrms
Input Voltage Input Frequency Oscillator Input Voltage Intermediate Frequency Limiter Input Voltage Filter Input Voltage Squelch Input Voltage Mute Sink Current Ambient Temperature Range
ELECTRICAL CHARACTERISTICS (VCC Vdc, 58.1125 MHz, ±3.0 kHz, fmod kHz, source,
flocal 57.6575 MHz, Vlocal dBm, 25°C, unless otherwise noted) Characteristic Input SINAD Matched Input (See Figures Unmatched Input (See Figures Input Recovered Audio Output Voltage Recovered Audio Drop Voltage Loss dBm, Meter Drive Output Voltage Modulation) -100 Filter Gain kHz, mVrms Mixer Conversion Gain dBm, Signal Noise Ratio Total Harmonic Distortion dBm, Detector Output Impedance Detector Output Voltage Modulation) Meter Drive -100 Meter Drive Dynamic Range RFIn IFIn (455 kHz) Mixer Third Order Input Intercept Point 58.125 58.1375 Mixer Input Resistance Mixer Input Capacitance Symbol VSIN VNQS AFloss -8.0 MDrv AV(Amp) AV(Mix) ITOMix 1.45 µA/dB -1.5 µVrms mVrms Unit µVrms
LIFETIME
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MC3371 MC3372
ELECTRICAL CHARACTERISTICS (VCC Vdc, 25°C, unless otherwise noted)
Drain Current Input Signal) Squelch Off, Squelch Squelch Off, Detector Output Input Signal) Voltage, Filter Output Input Signal) Voltage Voltage Change, Trigger Hysteresis lcc1 lcc2 dlcc1 dV11
Figure MC3371 Functional Block Diagram Test Fixture Schematic
Input
RSSI Output
LIFETIME
0.01 SqIn FilterOut
FilterIn
Mute
0.01
Filter
Squelch Trigger with Hysteresis
Demodulator Mixer Limiter Oscillator Quad Coil TOKO 2A6597 7MC-8128Z
57.6575
0.33 0.001 muRata CFU455D2 equivalent
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Audio Power
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Characteristic
Symbol
Unit
MC3371 MC3372
Figure MC3372 Functional Block Diagram Test Fixture Schematic
Input
RSSI Output
SqIn FilterOut
FilterIn 0.01 Mute 0.01 Filter Audio Power
LIFETIME
Squelch Trigger with Hysteresis
Demodulator Mixer Limiter Oscillator 0.33 0.001 muRata CFU455D2 equivalent
57.6575
Ceramic Resonator muRata CDB455C16
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MC3371 MC3372
TYPICAL CURVES
(Unmatched Input)
Figure Total Harmonic Distortion versus Temperature
THD, TOTAL HARMONIC DISTORTION AMBIENT TEMPERATURE (°C) Input 10.7 RSSI OUT(µ
Figure RSSI versus Input
75°C
-30°C 25°C
10.7 75°C -100 -30°C
-140 -120
INPUT (dBm)
LIFETIME
Figure RSSI Output versus Temperature
RSSI OUTPUT( -110 AMBIENT TEMPERATURE (°C) 10.7 MIXER OUTPUT (dBm)
Figure Mixer Output versus Input
Desired Products
Order Products
27°C
INPUT (dBm)
Figure Mixer Gain versus Supply Voltage
RSSI OUTPUT( -30°C 25°C 10.7 RFin Load MIXER GAIN (dB) 75°C
Figure Mixer Gain versus Frequency
27°C RFin
-5.0
1000
VCC, SUPPLY VOLTAGE
FREQUENCY (MHz)
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MC3371 MC3372
MC3371 FUNCTION DESCRIPTION
Internal Equivalent Circuit
Symbol OSC1
Description base Colpitts oscillator. high impedance capacitance probe "sniffer" view wave- form without altering frequency. Typical level mVpp.
Waveform
OSC1 OSC2 OSC2
emitter Colpitts oscillator. Typical signal level mVpp. Note that signal somewhat distorted compared that
LIFETIME
MXOut MixerOut
Output Mixer. Riding carrier component. typical level approximately mVpp.
Supply Voltage -2.0 operating range. decoupled ground.
IFIn IFIn DEC1
Input amplifier after passing through ceramic filter. signal attenuated filter. typical level approximately mVpp.
DEC1 DEC2
DEC2
Decoupling. External capacitors connected VCC.
Quad Coil
Quad Coil
Quadrature Tuning Coil. Composite (not demodulated) signal present. typical level mVpp.
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OPERATING CONDITIONS Vdc, RFIn fmod kHz, fdev kHz. MC3371 10.7 (see Figure 11).
MC3371 MC3372
MC3371 FUNCTION DESCRIPTION (continued)
Internal Equivalent Circuit
Symbol
Description Recovered Audio. This composite demodulated output having signal carrier component. typical level Vpp.
Waveform
filtered recovered audio carrier component removed typically mVpp.
LIFETIME
FilIn
Filter Amplifier Input FilterIn
FilOut FilterOut
Filter Amplifier Output. typical signal level mVpp.
SqIn SqIn
Squelch Input. discussion application text.
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OPERATING CONDITIONS Vdc, RFIn fmod kHz, fdev kHz. MC3371 10.7 (see Figure 11).
MC3371 MC3372
MC3371 FUNCTION DESCRIPTION (continued)
Internal Equivalent Circuit
Symbol RSSI
Description RSSI Output. Referred Received Signal Strength Indicator RSSI. chip sources over linear range. This used many ways, such AGC, meter drive carrier triggered squelch circuit.
Waveform
Bias
RSSIOut Mute Output. discussion application text.
MUTE
Mute SqOut
Ground. ground area should continuous unbroken. two- sided layout, component side ground plane. one-sided layout, ground plane fills around traces circuit side board interrupted. Mixer Input Series Input Impedance: MHz: MHz:
LIFETIME
MIXIn MixerIn
*Other pins same pins MC3371.
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OPERATING CONDITIONS Vdc, RFIn fmod kHz, fdev kHz. MC3371 10.7 (see Figure 11).
MC3371 MC3372
MC3372 FUNCTION DESCRIPTION
Internal Equivalent Circuit
Symbol IFIn
Description Amplifier Input
Waveform
IFIn DEC1 Decoupling. External capacitors connected VCC.
IFOut IFOut
Amplifier Output Signal level typically mVpp.
LIFETIME
QuadIn QuadIn
Quadrature Detector Input. Signal level typically mVpp.
Recovered Audio. This composite demodulated output having signal carrier components. Typical level mVpp.
RAOut filtered recovered audio carrier signal removed typically mVpp.
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OPERATING CONDITIONS Vdc, RFIn fmod kHz, fdev kHz. MC3372 (see Figure 13).
MC3371 MC3372
Figure MC3371 Circuit Schematic
MixerIn MixerOut Meter FilterIn Squelch OSC1 OSC2 Bias FilterOut Bias
Squelch
QuadIn
LIFETIME
IFIn DEC1 DEC2
RAOut
Figure MC3372 Circuit Schematic
MixerIn MixerOut Meter FilterIn Squelch OSC1 OSC2 Bias FilterOut Bias QuadIn
Squelch
IFIn IFOut
RAOut
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MC3371 MC3372
CIRCUIT DESCRIPTION
MC3371 MC3372 power narrowband receivers with operating frequency MHz. voltage design provides power drain, excellent sensitivity, good image rejection narrowband voice data link applications. This part combines mixer, (intermediate frequency) limiter with logarithmic response signal strength indicator, quadrature detector, active filter squelch trigger circuit. typical application, mixer amplifier converts input signal signal. Passing through external bandpass filter, signal into limiting amplifier detection circuit where audio signal recovered. conventional quadrature detector used. absence input signal indicated presence noise above desired audio frequencies. This "noise band" monitored active filter detector. squelch switch used mute audio when noise tone present. input signal level monitored meter drive circuit which detects amount signal limiting amplifier. amplifier approximately gain. MC3371 MC3372 different limiter quadrature detector circuits. MC3371 resistor providing internal biasing output limiter internally connected, both directly through capacitor quadrature detector; whereas, MC3372 these components provided internally. Thus, MC3371, external components necessary match ceramic filter, while MC3372, external biasing resistors needed between Pins respectively (see Figures 13). MC3371, parallel quadrature tank circuit connected externally from (similar MC3361). MC3372, quadrature capacitor needed externally from parallel ceramic discriminator with damping resistor also needed from (similar MC3357). above external quadrature circuitry provides phase shift center frequency enables recovered audio. damping resistor determines peak separation detector somewhat critical. resistor decreased, separation bandwidth increased recovered audio decreased. Receiver sensitivity dependent value this resistor bandwidth ceramic filter. chip composite recovered audio, consisting carrier component modulating signal, passed through pass filter amplifier reduce carrier component then which output impedance signal still requires further filtering eliminate carrier component, deemphasis, volume control, further amplification before driving loudspeaker. relative level composite recovered audio signal should considered proper interaction with audio post amplifier given load element. MC13060 recommended power audio amplifier. meter output indicates strength level output current proportional logarithm input signal amplitude. maximum source current available used drive meter detect carrier presence. This referred Received Strength Signal Indicator (RSSI). output provides current source. Thus, resistor ground yields voltage proportional input carrier signal level. value this resistor estimated (VCC(Vdc) V)/60 Vdc, resistor approximately provides maximum voltage swing about simple inverting output inverting input noninverting input connected used noise triggered squelch active noise filter. bandpass filter designed with external impedance elements discriminate between frequencies. With external detector, filtered audio signal checked tone signal presence noise above normal audio band. This information applied
LIFETIME
APPLICATIONS INFORMATION
oscillator internally biased Colpitts type with collector, base, emitter connections Pins respectively. This oscillator under crystal control. fundamental mode crystals crystal characterized parallel resonant load. higher frequencies, overtone series mode type crystals. coil (L2) resistor (R13) needed ensure proper stable operation frequency (see Figure application circuit). mixer doubly balanced reduce spurious radiation. Conversion gain stated Electrical Characteristics table typically This power gain measurement made under stable conditions using source input external load provided ceramic filter mixer output which connected (Pin input (Pin filter impedance closely matches internal load resistance (mixer output). Since input impedance strongly influenced internal biasing resistor capacitance, useful gain actually much higher than shown standard power gain measurement. Smith Chart plot Figure shows measured mixer input impedance versus input frequency with mixer input matched source impedance given frequencies. order assure stable operation under matched conditions, necessary provide shunt resistor ground. Figures show input networks used derive mixer input impedance data. Following mixer, ceramic bandpass filter recommended filtering (i.e. types having bandwidth ±2.0 with input output impedance from stage limiting
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MC3371 MC3372
external positive bias sets squelch trigger circuit such that audio mute (Pin open connected ground. pulled down below noise tone detector, internally shorted ground. There about hyteresis prevent jitter. Audio muting accomplished connecting appropriate point audio path between audio amplifier. voltage should lower than -0.7 this assured connecting point that component. Another possible application squelch switch carrier level triggered squelch circuit, similar MC3362/MC3363 receivers. this case meter output used directly trigger squelch switch when input input frequency falls below desired level. level which this occurs determined resistor placed between meter drive output (Pin ground (Pin 15).
Figure Typical Application MC3371 10.7
RSSI Output 10.7 from Input Front TKANS9443HM 1N5817 0.001 0.001 Filter Demodulator Toko 2A6597 7MC-8128Z 0.022 0.22 Audio Power (Squelch Control)
LIFETIME
Squelch Trigger with Hysteresis Mixer Oscillator 10.245 muRata CFU455D2 equivalent
Limiter
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MC3371 MC3372
Figure Typical Application MC3372 10.7
RSSI Output 10.7 from Input Front TKANS9443HM 1N5817 0.001 0.001 Filter 0.022 0.22 Audio Power (Squelch Control)
0.01
LIFETIME
Squelch Trigger with Hysteresis Mixer Oscillator 10.245 muRata CFU455D2 equivalent
Demodulator Limiter 1.8k muRata CDB455C16
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MC3371 MC3372
Figure Typical Application MC3372
RSSI Output Meter (Triplett 0.245 Coilcraft 150-07J08 0.01 1N5817 0.001 0.001 Filter Demodulator Limiter muRata CDB455C16 (Squelch Control)
Input
0.022 0.22 Audio Power
LIFETIME
Squelch Trigger with Hysteresis Mixer Oscillator 0.01 Coilcraft 143-13J12 44.545 0.84 muRata CFU455D2 equivalent
Figure RSSI Output versus Input
RSSI OUTPUT (Vdc) RSSI OUTPUT (Vdc) -120 -100 10.7 Reference Figure -120
Figure RSSI Output versus Input
Reference Figure
-100
INPUT (dBm)
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MC3371 MC3372
Figure versus Input
(dB) -130 -110 INPUT (dBm) Reference Figures 10.7 25°C
LIFETIME
Figure Mixer Input Impedance versus Frequency
+j50
+j25
+j100
+j150 +j10 Input
+j250 +j500
10.7 -j500
-j10
-j250
-j150
-j25 -j50
-j100
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MC3371 MC3372
Figure MC3371 Board Component View with Matched Input 10.7
COMPONENT SIDE .325I 455D .325I
XTAL 10.245 INPUT 10.7
MC3371
MC3371
10.7 FRONT
LIFETIME
METER .325I
Figure MC3371 Board Circuit Solder Side Viewed through Component Side
SOLDER SIDE
Above Board laid circuit Figure
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MC3371 MC3372
Figure MC3372P Board Component View with Matched Input 10.7
COMPONENT SIDE .325 .325
MC3372
CFU455D2 XTAL 10.245
INPUT 10.7
.325 METER
MC3372
10.7 FRONT
LIFETIME
Figure MC3372P Board Circuit Solder Side Viewed through Component Side
SOLDER SIDE
Above Board laid circuit Figure
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OUTLINE DIMENSIONS
SUFFIX PLASTIC PACKAGE CASE 648-08 ISSUE
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: INCH. DIMENSION CENTER LEADS WHEN FORMED PARALLEL. DIMENSION DOES INCLUDE MOLD FLASH. ROUNDED CORNERS OPTIONAL. INCHES 0.740 0.770 0.250 0.270 0.145 0.175 0.015 0.021 0.040 0.70 0.100 0.050 0.008 0.015 0.110 0.130 0.295 0.305 0.020 0.040 MILLIMETERS 18.80 19.55 6.35 6.85 3.69 4.44 0.39 0.53 1.02 1.77 2.54 1.27 0.21 0.38 2.80 3.30 7.50 7.74 0.51 1.01
SEATING PLANE
0.25 (0.010)
LIFETIME
SUFFIX PLASTIC PACKAGE CASE 751B-05 (SO-16) ISSUE
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: MILLIMETER. DIMENSIONS INCLUDE MOLD PROTRUSION. MAXIMUM MOLD PROTRUSION 0.15 (0.006) SIDE. DIMENSION DOES INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL 0.127 (0.005) TOTAL EXCESS DIMENSION MAXIMUM MATERIAL CONDITION. MILLIMETERS 9.80 10.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 0.19 0.25 0.10 0.25 5.80 6.20 0.25 0.50 INCHES 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 0.008 0.009 0.004 0.009 0.229 0.244 0.010 0.019
0.25 (0.010)
SEATING PLANE
0.25 (0.010)
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MC3371 MC3372
OUTLINE DIMENSIONS
SUFFIX PLASTIC PACKAGE CASE 948F-01 (TSSOP-16) ISSUE
0.10 (0.004) 0.15 (0.006)
IDENT.
SECTION
0.25 (0.010)
LIFETIME
0.15 (0.006)
DETAIL
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: MILLIMETER. DIMENSION DOES INCLUDE MOLD FLASH. PROTRUSIONS GATE BURRS. MOLD FLASH GATE BURRS SHALL EXCEED 0.15 (0.006) SIDE. DIMENSION DOES INCLUDE INTERLEAD FLASH PROTRUSION. INTERLEAD FLASH PROTRUSION SHALL EXCEED 0.25 (0.010) SIDE. DIMENSION DOES INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL 0.08 (0.003) TOTAL EXCESS DIMENSION MAXIMUM MATERIAL CONDITION. TERMINAL NUMBERS SHOWN REFERENCE ONLY. DIMENSION DETERMINED DATUM PLANE -W-. MILLIMETERS 4.90 5.10 4.30 4.50 1.20 0.05 0.15 0.50 0.75 0.65 0.18 0.28 0.09 0.20 0.09 0.16 0.19 0.30 0.19 0.25 6.40 INCHES 0.193 0.200 0.169 0.177 0.047 0.002 0.006 0.020 0.030 0.026 0.007 0.011 0.004 0.008 0.004 0.006 0.007 0.012 0.007 0.010 0.252
0.10 (0.004) SEATING
PLANE
DETAIL
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MC3371 MC3372
LIFETIME
Motorola reserves right make changes without further notice products herein. Motorola makes warranty, representation guarantee regarding suitability products particular purpose, does Motorola assume liability arising application product circuit, specifically disclaims liability, including without limitation consequential incidental damages. "Typical" parameters which provided Motorola data sheets and/or specifications vary different applications actual performance vary over time. operating parameters, including "Typicals" must validated each customer application customer's technical experts. Motorola does convey license under patent rights rights others. Motorola products designed, intended, authorized components systems intended surgical implant into body, other applications intended support sustain life, other application which failure Motorola product could create situation where personal injury death occur. Should Buyer purchase Motorola products such unintended unauthorized application, Buyer shall indemnify hold Motorola officers, employees, subsidiaries, affiliates, distributors harmless against claims, costs, damages, expenses, reasonable attorney fees arising directly indirectly, claim personal injury death associated with such unintended unauthorized use, even such claim alleges that Motorola negligent regarding design manufacture part. Motorola registered trademarks Motorola, Inc. Motorola, Inc. Equal Opportunity/Affirmative Action Employer. Mfax trademark Motorola, Inc. reach EUROPE Locations Listed: Motorola Literature Distribution; P.O. 5405, Denver, Colorado 80217. 303-675-2140 1-800-441-2447 JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan. 81-3-5487-8488
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