Download: • Complete Dual Conversion Circuitry FM RECEIVER • Low Voltage: VCC = 2.0 to 6.0 Vdc SEMICONDUCTOR • Low Drain Current (3.6 mA (Typical) @ VCC = 3.0 Vdc) TECHNICAL DATA

Order this document by MC3362/D .includes dual FM conversion with oscillators, mixers, quadrature discriminator, and meter drive/carrier detect circuitry. The MC3362 also has LOW–POWER buffered first and second local oscillator outputs and a comparator circuit for FSK detection. DUAL CONVERSION • Complete Dual Conversion Circuitry FM RECEIVER • Low Voltage: VCC = 2.0 to 6.0 Vdc SEMICONDUCTOR • Low Drain Current (3.6 mA (Typical) @ VCC = 3.0 Vdc) TECHNICAL DATA • Excellent Sensitivity: Input Voltage 0.6 µVrms (Typical) for 12 dB SINAD • Externally Adjustable Carrier Detect Function • Low Number...
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Order this document by MC3362/D .includes dual FM conversion with oscillators, mixers, quadrature discriminator, and meter drive/carrier detect circuitry. The MC3362 also has LOW–POWER buffered first and second local oscillator outputs and a comparator circuit for

FSK detection. DUAL CONVERSION

• Complete Dual Conversion Circuitry FM RECEIVER • Low Voltage: VCC = 2.0 to 6.0 Vdc SEMICONDUCTOR • Low Drain Current (3.6 mA (Typical) @ VCC = 3.0 Vdc) TECHNICAL DATA • Excellent Sensitivity: Input Voltage 0.6 µVrms (Typical) for 12 dB SINAD • Externally Adjustable Carrier Detect Function • Low Number of External Parts Required P SUFFIX • Manufactured Using Motorola s MOSAIC Process Technology PLASTIC PACKAGE CASE 724 • MC13135 is Preferred for New Designs DW SUFFIX PLASTIC PACKAGE CASE 751E (SO-24L)

Figure 2. Pin Connections and Representative Block Diagram Figure 1. Simplified Application in a PLL Frequency Synthesized Receiver

RF Input 1st Mixer Input 1 24 1st Mixer Input to 200 MHz X

Figure 2. 2nd LO Output 2 23 Varicap Control

2nd LO Emitter 3 22 1st LO Tank Input Match 0.01 2nd LO Base 4 21 1st LO Tank VCC 1 24 120 pF From PLL Phase 2nd Mixer Output5X20 1st LO Output 2 Detector23 VCC 6 19 1st Mixer Output0.01 50 pF 3 22 10.245 MHz 0.41 µH Limiter Input 7 18 2nd Mixer Input 4 21 Limiter Decoupling 8 17 2nd Mixer InputCeramic Filter 5 20 To PLL or Prescaler 455 kHz MC3362 Limiter 6 19 Decoupling 9 16 VEE Ceramic Filter 10.7 MHz 7 18 Meter Drive 10 15 Comparator Output 8 17 1.0+ Carrier Detect 11 14 Comparator Input 0.1 0.1 9 16 Quadrature Coil 12 X 13 Detector Output 10 k 0.1 0.1 10 15200 k Data V 14 CC11 10 k To Carrier 0.001 ORDERING INFORMATION Detect 12 13 Recovered Indicator 39 K 8.2 k 0.01 Audio Operating Device Temperature Range Package Lp = 680 µH Cp = 180 pF MC3362DW SO–24L TA = – 40 to +85°C MC3362P Plastic DIP Motorola, Inc. 1996 Rev 2

MOTOROLA ANALOG IC DEVICE DATA 1

, MAXIMUM RATING (TA = 25°C, unless otherwise noted) Rating Pin Symbol Value Unit Power Supply Voltage (See Figure 2) 6 VCC(max) 7.0 Vdc Operating Supply Voltage Range (Recommended) 6 VCC 2.0 to 6.0 Vdc Input Voltage (VCC 5.0 Vdc) 1, 24 V1–24 1.0 Vrms Junction Temperature – TJ 150 °C Operating Ambient Temperature Range – TA – 40 to + 85 °C Storage Temperature Range – Tstg – 65 to + 150 °C ELECTRICAL CHARACTERISTICS (VCC = 5.0 Vdc, fo = 49.7 MHz, Deviation = 3.0 kHz, TA = 25°C, Test Circuit of Figure 3, unless otherwise noted) Characteristic Pin Min Typ Max Units Drain Current (Carrier Detect Low – See Figure 5) 6 – 4.5 7.0 mA Input for –3.0 dB Limiting – 0.7 2.0 µVrms Input for 12 dB SINAD (See Figure 9) – 0.6 – µVrms Series Equivalent Input Impedence – 450–j350 – Ω Recovered Audio (RF signal level = 10 mV) 13 – 350 – mVrms Noise Output (RF signal level = 0 mV) 13 – 250 – mVrms Carrier Detect Threshold (below VCC) 10 – 0.64 – Vdc Meter Drive Slope 10 – 100 – nA/dB Input for 20 dB (S + N)/N (See Figure 7) – 0.7 – µVrms First Mixer 3rd Order Intercept (Input) – –22 – dBm First Mixer Input Resistance (Rp) – 690 – Ω First Mixer Input Capacitance (Cp) – 7.2 – pF Conversion Voltage Gain, First Mixer – 18 – dB Conversion Voltage Gain, Second Mixer – 21 – Dector Output Resistance 13 – 1.4 – kΩ Figure 3. Test Circuit RF Ferronics Input 12–345–K 50Ω124 0.01 120 pF 2:6 2 23 10.245 50 pF 3 22 10.5 Turns MHz 33 pF Coilcraft 4 21 UNI–10/142 5 20 FL1: FL1 MC33626 19 muRata CFU455D FL2 or 0.1 7 18 Toko LFC–4551 8 17 0.1 FL2: 68 kΩ 9 16 muRata SFE10.7MA 10 15 or 0.1 180 pF Toko SK107M3–A0–1011 14 12 13 1.0 µF Toko RMC–2A6597HM V +CC VEE NOTE: See AN980 for Additional Design Information. 2 MOTOROLA ANALOG IC DEVICE DATA,

Figure 5. Drain Current, Recovered Audio Figure 4. IMeter versus Input versus Supply

12 8.0 800 11 VCC 7.0 700 10 10 ICC, Carr. Det. Low (RF in = 10 mV) A MC3362 6.0 600 9.0 8.0 5.0 ICC, Carr. Det. High (RF in = 0 mV) 500 7.0 4.0 400 6.0 3.0 300 5.0 Recovered Audio 2.0 200 4.0 3.0 1.0 100 2.000– 130 – 120 – 110 – 100 – 90 – 80 – 70 – 60 – 50 – 40 – 30 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 RF INPUT (dBm) VCC (V)

Figure 6. Signal Levels Figure 7. S + N, N, AMR versus Input

30 20 20 10 S + N 1000– 10 Second Mixer Output – 10 – 20 First Mixer Output – 20 – 30 Second Mixer Input S + N 30% AM – 30 – 40 – 40 – 50 MC3362 13 N – 50 First Mixer Input 10 k 10 k – 60 0.01 0.01 – 60 – 70 RF Input to Transformer – 70 – 80 – 130 – 120 – 110 – 100 – 90 – 80 – 70 – 60 – 50 – 40 – 30 – 130 – 120 – 110 – 100 – 90 – 80 – 70 – 60 – 50 – 40 – 30 RF INPUT (dBm) RF INPUT (dBm)

Figure 8. 1st Mixer 3rd Order Intermodulation Figure 9. Detector Output versus Frequency

20 4.0 3.0 – 10 – 20 – 30 2.0 – 40 Desired Products – 50 3rd Order Intermod. Products 1.0– 60 – 70 – 80 0 – 100 – 90 – 80 – 70 – 60 – 50 – 40 – 30 – 20 – 10 0 – 40 – 30 – 20 – 10 0 10 20 30 40 RF INPUT (dBm) RELATIVE INPUT FREQUENCY (kHz)

MOTOROLA ANALOG IC DEVICE DATA 3

dB POWER (dBm) I10( µ A) V1 3 (Vdc) S + N, N, AMR (dB) ICC(mA) V1 3 (mVrms),

Figure 10. PC Board Test Circuit

(LC Oscillator Configuration Used in PLL Synthesized Receiver) RF Input 18 p 1000 p 49.67 MHz 1 24 50 Ω 0.01 0.47 µ Varactor Control2 23 (keep 0.7 V V23 VCC) 0.01 VCC = 2.0 to 7.0 Vdc (This network must be tuned to exactly 3 22 10.7 MHz above or below the incoming 120 p 50 p 33 p 0.41 µ RF signal. 4 21 NOTE: The IF is rolled off above 10.7 10.245, Fund. Mode MHz to reduce L.O. feedthrough.) 32 pF Load First Local Oscillator5 20 Buffered Output 455 kHz CRF1 VCC 3.0 k Cer. Filt. 6 19 CRF1 = muRata CFU 455X – the X to VCC suffix denotes 6.0 dB bandwidth. CRF2 Rin = Rout = 1.5 to 2.0 kΩ. 7 18 10.7 MHz 0.1 Cer. Filt. CRF2 = muRata SFA10.7 MF5 or 8 17 SFE10.7 or equivalent. Rin = Rout 0.1 0.1 = 330 Ω . Crystal filters can be 0.11916 used but impedance matching will 100 k need to be added to ensure proper 51 k filter characteristics are realized. 10 15 CD Adjust 10 k 10 k – + FSK Data Output 11 14 (optional)Carrier Detect 39 k 0.001 Recovered 12 13 8.2 k Audio0.01 455 kHz LC Resonator (MC3362)

Figure 10A. Crystal Oscillator Configuration for Single Channel Application

Crystal used is series mode resonant (no load capacity specified), 3rd overtone. 20 k This method has not proven adequate for 22 fundamental mode, 5th or 7th overtone crystals. 0.68 µ The inductor and capacitor will need to be 300 V changed for other frequency crystals. SeeCC AN980 for further information. 0.68 µ 20 k 38.97 MHz 4 MOTOROLA ANALOG IC DEVICE DATA MC3362, Figure 11. Component Placement View Showing Crystal Oscillator Circuit Figure 11A. LC Oscillator Component View 8 .41 µH .47 µH .68µH 120p .68 10.245MHz µH XT 39 MHz .1 XT

CF

1. 455KHz .1 100K .1 2 .1 3 51K 2 10K 2 10K 1 68K31

TOKO

55VLC06379GT531

METER

DRIVE DATA REC. AUDIO NOTES: 1. Recovered Audio components may be deleted when using 5. Meter Drive cannot be used simultaneously with Carrier Detect output. data output. For analog meter drive, remove components labelled ″2″ and measure 2. Carrier Detect components must be deleted in order to obtain meter current (4–12 µA) through ammeter to VCC. linear Meter Drive output. With these components in place the 6. Either type of oscillator circuit may be used with any output circuit Meter Drive outputs serve only to trip the Carrier Detect indicator. configuration. 3. Data Output components should be deleted in applications 7. LC Oscillator Coil: Coilcraft UNI 10/42 10.5 turns, 0.41 µH Crystal where only audio modulation is used. For combined audio/data Oscillator circuit: trim coil, 0.68 µH. Coilcraft M1287–A. applications, the 0.047 µF coupling capacitor will add distortion 8. 0.47 H, Coilcraft M1286–A. Input LC network used to match first mixer to the audio, so a pull–down resistor at pin 13 may be required. input impedance to 50 Ω . 4. Use Toko 7MC81282 Quadrature coil. CIRCUIT DESCRIPTION APPLICATIONS INFORMATION The MC3362 is a complete FM narrowband receiver from The first local oscillator can be run using a free–running antenna input to audio preamp output. The low voltage dual LC tank, as a VCO using PLL synthesis, or driven from an conversion design yields low power drain, excellent external crystal oscillator. It has been run to 190 MHz.* A sensitivity and good image rejection in narrowband voice and buffered output is available at Pin 20. The second local data link applications. oscillator is a common base Colpitts type which is typically In the typical application (Figure 1), the first mixer run at 10.245 MHz under crystal control. A buffered output is amplifies the signal and converts the RF input to 10.7 MHz. available at Pin 2. Pins 2 and 3 are interchangeable. This IF signal is filtered externally and fed into the second The mixers are doubly balanced to reduce spurious mixer, which further amplifies the signal and converts it to a responses. The first and second mixers have conversion 455 kHz IF signal. After external bandpass filtering, the low IF gains of 18 dB and 22 dB (typical), respectively, as seen in is fed into the limiting amplifier and detection circuitry. The Figure 6. Mixer gain is stable with respect to supply voltage. audio is recovered using a conventional quadrature detector. For both conversions, the mixer impedances and pin layout Twice–IF filtering is provided internally. are designed to allow the user to employ low cost, readily The input signal level is monitored by meter drive circuitry available ceramic filters. Overall sensitivity and AM rejection which detects the amount of limiting in the limiting amplifier. are shown in Figure 7. The input level for 20 dB (S + N)/N is The voltage at the meter drive pin determines the state of the 0.7 µV using the two–pole post–detection filter pictured. carrier detect output, which is active low. * If the first local oscillator (Pins 21 and/or 22) is driven from a strong external source (100 mVrms), the mixer can be used to over 450 MHz. MOTOROLA ANALOG IC DEVICE DATA 5 18p 50p 1Kp MC3362P .01 .047 10.7 MHzCF .01 8.2 K .01 3K 10K 10K 330 L.O.OUT CONTROL .01 10.7MHz .047 CF 33p .01 .2K 3K L.O.OUT CONTROL

CARRIER

INPUT Vcc DETECT GND, Following the first mixer, a 10.7 MHz ceramic band–pass FSK modulation. Data rates are typically limited to 1200 baud filter is recommended. The 10.7 MHz filtered signal is then to ensure data integrity and avoid adjacent channel “splatter.” fed into one second mixer input pin, the other input pin being Hysteresis is available by connecting a high valued resistor connected to VCC. Pin 6 (VCC) is treated as a common point from Pin 15 to Pin 14. Values below 120 kΩ are not for emitter–driven signals. recommended as the input signal cannot overcome the The 455 kHz IF is typically filtered using a ceramic hysteresis. bandpass filter then fed into the limiter input pin. The limiter The meter drive circuitry detects input signal level by has 10 µV sensitivity for – 3.0 dB limiting, flat to 1.0 MHz. monitoring the limiting amplifier stages. Figure 4 shows the The output of the limiter is internally connected to the unloaded current at Pin 10 versus input power. The meter quadrature detector, including a quadrature capacitor. A drive current can be used directly (RSSI) or can be used to parallel LC tank is needed externally from Pin 12 to VCC. A 39 trip the carrier detect circuit at a specified input power. To do kΩ shunt resistance is included which determines the peak this, pick an RF trip level in dBm. Read the corresponding separation of the quadrature detector; a smaller value will current from Figure 4 and pick a resistor such that: increase the spacing and linearity but decrease recovered audio and sensitivity. R10 0.64 Vdc / I10 A data shaping circuit is available and can be coupled to Hysteresis is available by connecting a high valued resistor the recovered audio output of Pin 13. The circuit is a RH between Pins 10 and 11. The formula is: comparator which is designed to detect zero crossings of Hysteresis = VCC/(RH x 10 –7) dB Figure 12. Circuit Side View MC3362P

METER

REC. AUDIO DATA DRIVE 6 MOTOROLA ANALOG IC DEVICE DATA

CARRIER

GND DETECT VCC INPUT CONTROL L.O. OUT,

MOTOROLA ANALOG IC DEVICE DATA 7 Figure 13. Representative Schematic Diagram

1.0 1.0 kΩ6VΩ400 Ω kΩ CC 100 Ω 1.4 kΩ 20 5 21 bias 1 24 3 17 bias 12 11 2.0 kΩ 9 15 bias bias 13 14 bias

VEE

,

OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE

–A– CASE 724–03

ISSUE D NOTES:

1. CHAMFERED CONTOUR OPTIONAL. 24 13 2. DIMENSION L TO CENTER OF LEADS WHEN –B– FORMED PARALLEL. 1 12 3. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 4. CONTROLLING DIMENSION: INCH.

L INCHES MILLIMETERS C DIM MIN MAX MIN MAX

A 1.230 1.265 31.25 32.13 B 0.250 0.270 6.35 6.85 –T– NOTE1C0.145 0.175 3.69 4.44K D 0.015 0.020 0.38 0.51

SEATING NME0.050 BSC 1.27 BSCPLANEEF0.040 0.060 1.02 1.52 G G 0.100 BSC 2.54 BSCF J 24 PL J 0.007 0.012 0.18 0.30 D 24 PL 0.25 (0.010) MTBM

K 0.110 0.140 2.80 3.55 L 0.300 BSC 7.62 BSC 0.25 (0.010) MTAMM015 0 15 N 0.020 0.040 0.51 1.01

DW SUFFIX PLASTIC PACKAGE

–A– CASE 751E–04 NOTES: (SO-24L) 1. DIMENSIONING AND TOLERANCING PER ANSI 24 13 ISSUE E Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. –B– P 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)12X PER SIDE. 0.010 (0.25) MBM5. DIMENSION D DOES NOT INCLUDE DAMBARPROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN 1 12 EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION.

D MILLIMETERS INCHES24X J DIM MIN MAX MIN MAX

0.010 (0.25) MTASBSA15.25 15.54 0.601 0.612 B 7.40 7.60 0.292 0.299 C 2.35 2.65 0.093 0.104

F D 0.35 0.49 0.014 0.019

F 0.41 0.90 0.016 0.035

R X 45 G 1.27 BSC 0.050 BSC

J 0.23 0.32 0.009 0.013 K 0.13 0.29 0.005 0.011

CM0808

P 10.05 10.55 0.395 0.415 –T– R 0.25 0.75 0.010 0.029 SEATING M PLANE 22XGKMotorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 4–32–1, P.O. Box 5405, Denver, Colorado 80217. 303–675–2140 or 1–800–441–2447 Nishi–Gotanda, Shinagawa–ku, Tokyo 141, Japan. 81–3–5487–8488 Mfax: email is hidden – TOUCHTONE 602–244–6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, – US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 INTERNET: http://motorola.com/sps 8 ◊ MOTOROLA ANALOG IC DEVICMEC D3A36T2A/D]
15

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