Order this document by MC3363/D The MC3363 is a single chip narrowband VHF FM radio receiver. It is a dual conversion receiver with RF amplifier transistor, oscillators, mixers, quadrature detector, meter drive/carrier detect and mute circuitry. The MC3363 also has a buffered first local oscillator output for use with frequency synthesizers, and a data slicing comparator for FSK detection. • Wide Input Bandwidth – 200 MHz Using Internal Local Oscillator Wide Input Bandwidth – 450 MHz Using External Local Oscillator • RF Amplifier Transistor • • • • • • • • • LOW POWER DUAL CONVERSION FM RECEIVER SEMICONDUCTOR TECHNICAL DATA Muting Operational Amplifier Complete Dual Conversion Low Voltage: VCC = 2.0 V to 6.0 Vdc Low Drain Current: ICC = 3.6 mA (Typical) at VCC = 3.0 V, Excluding RF Amplifier Transistor Excellent Sensitivity: Input 0.3 µV (Typical) for 12 dB SINAD Using Internal RF Amplifier Transistor Data Shaping Comparator DW SUFFIX PLASTIC PACKAGE CASE 751F (SO-28L) Received Signal Strength Indicator (RSSI) with 60 dB Dynamic Range Low Number of External Parts Required Manufactured in Motorola′s MOSAIC Process Technology ORDERING INFORMATION Device Operating Temperature Range Package MC3363DW TA = – 40 to +85°C SO–28L Figure 1. Pin Connections and Representative Block Diagram 1 28 1st Mixer Input Base 2 27 Varicap Control Emitter 3 26 1st LO Tank Collector 4 25 1st LO Tank 2nd LO Emitter 5 24 1st LO Output 2nd LO Base 6 23 1st Mixer Output 2nd Mixer Output 7 22 2nd Mixer Input VCC 8 21 2nd Mixer Input Limiter Input 9 20 VEE Limiter Decoupling 10 19 Mute Output Limiter Decoupling 11 18 Comparator Output Meter Drive (RSSI) 12 17 Comparator Input Carrier Detect 13 16 Recovered Audio Quadrature Coil 14 15 Mute Input – + 1st Mixer Input + – Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA Rev 0 1 MC3363 MAXIMUM RATINGS (TA = 25°C unless otherwise noted) Rating Pin Symbol Value Unit Power Supply Voltage 8 VCC(max) 7.0 Vdc Operating Supply Voltage Range (Recommended) 8 VCC 2.0 to 6.0 Vdc Input Voltage (VCC = 5.0 Vdc) 1, 28 V1–28 1.0 Vrms Mute Output Voltage 19 V19 – 0.7 to 8.0 Vpk 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, Mod 1.0 kHz, test circuit of Figure 2 unless otherwise noted) Characteristic Pin Min Typ Max Units 8 – 4.5 8.0 mA –3.0 dB Limiting Sensitivity (RF Amplifier Not Used) – 0.7 2.0 µVrms Input For 12 dB SINAD – 0.3 – 20 dB S/N Sensitivity (RF Amplifier Not Used) – 1.0 – Drain Current (Carrier Detect Low) 1st Mixer Input Resistance (Parallel – Rp) 1, 28 – 690 – Ω 1st Mixer Input Capacitance (Parallel – Cp) 1, 28 – 7.2 – pF 1st Mixer Conversion Voltage Gain (Avc1, Open Circuit) – 18 – dB 2nd Mixer Conversion Voltage Gain )Avc2, Open Circuit) – 21 – µVrms 2nd Mixer Input Sensitivity (20 dB S/N) (10.7 MHz i/p) 21 – 10 – Limiter Input Sensitivity (20 dB S/N) (455 kHz i/p) 9 – 100 – RF Transistor DC Current Drain 4 1.0 1.5 2.5 mAdc Noise Output Level (RF Signal = 0 mV) 16 – 70 – mVrms Recovered Audio (RF Signal Level = 1.0 mV) 16 120 200 – mVrms THD of Recovered Aduio (RF Signal = 1.0 mV) 16 – 2% – % Detector Output Impedance 16 – 400 – Ω Series Equivalent Input Impedance 1 – 450– j350 – Data (Comparator) ( p ) Output p Voltage g – High g D t (Comparator) Data (C t ) Output O t t Voltage V lt –L Low 18 – 0.1 0 1 – 0.1 0 1 VCC – Vdc Data (Comparator) Threshold Voltage Difference 17 70 110 150 mV Meter Drive Slope 12 70 100 135 nA/dB Carrier Detect Threshold (Below VCC) 12 0.53 0.64 0.77 Vdc Mute Output Impedance – High M te Output O tp t Impedance – Lo Mute Low 19 – – 10 25 – – MΩ 2 MOTOROLA ANALOG IC DEVICE DATA 1st Mixer Input 50 MHz MOTOROLA ANALOG IC DEVICE DATA LC1 0.1 0.1 CRF 2 68 k 10 k 1000 pF 10.245 M 120 pF VCC = 5.0 Vdc 0.1 2.6 + – 0.01 5.0 k 0.01 10 µ F To PLL Phase Detector 10 k 15 14 17 5.0 k 0.01 Mute Input Comparator Test Input Recovered Audio Output Comparator Output 10 k 0.1 + From PLL Phase Deetector 18 390 k 10 k L1 LC1: Toko 7MC8128Z L1: Coilcraft UNI 10/142 10–1/2 Turns Mute Output 1.0 k 10.7 MHz CRF 1 33 pF L1 0.41 µ H CRF 2: muRata CFU 455D or Equivalent CRF 1: muRata SFE 10.7 mA or Equivalent 19 20 21 22 23 24 25 26 27 28 16 Carrier Detect Output – + 13 12 11 10 9 8 7 6 5 4 3 2 1 Ferronics 12–345–K Core Figure 2. Test Circuit MC3363 Figure 2. 3 MC3363 CIRCUIT DESCRIPTION The MC3363 is a complete FM narrowband receiver from RF amplifier to audio preamp output. The low voltage dual conversion design yields low power drain, excellent sensitivity and good image rejection in narrowband voice and data link applications. In the typical application, the input RF signal is amplified by the RF transistor and then the first mixer amplifies the signal and converts the RF input to 10.7 MHz. This IF signal is filtered externally and fed into the second mixer, which further amplifies the signal and converts it to a 455 kHz IF signal. After external bandpass filtering, the low IF is fed into the limiting amplifier and detection circuitry. The audio is recovered using a conventional quadrature detector. Twice-IF filtering is provided internally. The input signal level is monitored by meter drive circuitry which detects the amount of limiting in the limiting amplifier. The voltage at the meter drive pin determines the state of the carrier detect output, which is active low. APPLICATIONS INFORMATION The first local oscillator is designed to serve as the VCO in a PLL frequency synthesized receiver. The MC3363 can operate together with the MC145166/7 to provide a two-chip ten–channel frequency synthesized receiver in the 46/49 cordless telephone band. The MC3363 can also be used with the MC14515X series of CMOS PLL synthesizers and MC120XX series of ECL prescalers in VHF frequency synthesized applications to 200 MHz. For single channel applications the first local oscillator can be crystal controlled. The circuit of Figure 4 has been used successfully up to 60 MHz. For higher frequencies an external oscillator signal can be injected into Pins 25 and/or 26 — a level of approximately 100 mVrms is recommended. The first mixer′s transfer characteristic is essentially flat to 450 MHz when this approach is used (keeping a constant 10.7 MHz IF frequency). The second local oscillator is a Colpitts type which is typically run at 10.245 MHz under crystal control. The mixers are doubly balanced to reduce spurious responses. The first and second mixers have conversion gains of 18 dB and 21 dB (typical), respectively. Mixer gain is stable with respect to supply voltage. For both conversions, the mixer impedances and pin layout are designed to allow the user to employ low cost, readily available ceramic filters. Following the first mixer, a 10.7 MHz ceramic bandpass filter is recommended. The 10.7 MHz filtered signal is then fed into the second mixer input Pin 21, the other input Pin 22 being connected to VCC. The 455 kHz IF is filtered by a ceramic narrow bandpass filter then fed into the limiter input Pin 9. The limiter has 10 µV sensitivity for – 3.0 dB limiting, flat to 1.0 MHz. The output of the limiter is internally connected to the quadrature detector, including a quadrature capacitor. A parallel LC tank is needed externally from Pin 14 to VCC. A 68 kΩ shunt resistance is included which determines the peak separation of the quadrature detector; a smaller value will lower the Q and expand the deviation range and linearity, but decrease recovered audio and sensitivity. A data shaping circuit is available and can be coupled to the recovered audio output of Pin 16. The circuit is a comparator which is designed to detect zero crossings of FSK modulation. Data rates of up to 35000 baud are detectable using the comparator. Best sensitivity is obtained when data rates are limited to 1200 baud maximum. Hysteresis is available by connecting a high-valued resistor from Pin 17 to Pin 18. Values below 120 kΩ are not recommended as the input signal cannot overcome the hysteresis. The meter drive circuitry detects input signal level by monitoring the limiting of the limiting amplifier stages. Figure 5 shows the unloaded current at Pin 12 versus input power. The meter drive current can used directly (RSSI) or can be used to trip the carrier detect circuit at a specified input power. A muting op amp is provided and can be triggered by the carrier detect output (Pin 13). This provides a carrier level triggered squelch circuit which is activated when the RF input at the desired input frequency falls below a present level. The level at which this occurs is determined by the resistor placed between the meter drive output (Pin 12) and VCC. Values between 80 – 130 kΩ are recommended. This type of squelch is pictured in Figures 3 and 4. Hysteresis is available by connecting a high-valued resistor Rh between Pins 12 and 13. The formula is: Hyst = VCC / (Rh x 10 – 7) dB The meter drive can also be used directly to drive a meter or to provide AGC. A current to voltage converter or other linear buffer will be needed for this application. A second possible application of the op amp would be in a noise triggered squelch circuit, similar to that used with the MC3357/MC3359/MC3361B FM IFs. In this case the op amp would serve as an active noise filter, the output of which would be rectified and compared to a reference on a squelch gate. The MC3363 does not have a dedicated squelch gate, but the NPN RF input stage or data shaping comparator might be used to provide this function if available. The op amp is a basic type with the inverting input and the output available. This application frees the meter drive to allow it to be used as a linear signal strength monitor. The circuit of Figure 4 is a complete 50 MHz receiver from antenna input to audio preamp output. It uses few components and has good performance. The receiver operates on a single channel and has input sensitivity of 0.3 µV for 12 dB SINAD. t NOTE: For further application and design information, refer to AN980. 4 MOTOROLA ANALOG IC DEVICE DATA RF Input 49.670 to 49.970 MHz MOTOROLA ANALOG IC DEVICE DATA Mute Control CF1 10.245 M 0.01 200 k VCC = 5.0 Vdc LC1 0.001 39 k 10 k 0.1 0.1 50 pF L = 680 µ H C = 180 pF 120 pF 120 pF 390 0.001 27 pF 10.5T 14 13 12 11 10 9 8 7 6 5 4 3 2 1 2.0T T1 0.41 µ H 100 k 15 16 17 18 19 20 21 22 23 24 25 26 27 28 0.01 1.0 µ H + 8.2 k CRF 1 33 pF 10 k 0.41 µ H + 0.01 10 µ H 0.1 µ F 20 k + Volume Control 10 µ F Cr Pin 24 Pin 25 Pin 26 Pin 27 f osc: 200 MHz L = 0.08 µ H Pull–Up Resistor 3.3 k to 20 k VCC (Regulated) NOTE: Pull Up resistor is used to run the oscillator above 50 MHz. Recovered Audio Output Data Output 3.0 k To MC145166/7 Dual PLL Frequency Synchrsizer From PLL Phase Detector CRF 1: muRata SFE 10.7 mA or Equivalent CRF 2: muRata CFU 455D or Equivalent L1: Coilcraft UNI 10/142 10 1/2 Turns LC1: Toko 7MC8128Z Figure 3. Typical Application in a PLL Frequency Synthesized Receiver MC3363 + – – + Figure 3. 5 6 10.01 21 22 23 50 k 139 k 10 k F2 0.1 X1 1.0 k LC1 0.1 1.0 k pF 1.0 k pF Standard 10.7 MHz Filter 2.0–7.0 Vdc Squelch Adjust VCC 0.22 µH 39 pF VCC 9.1 M 0.1 F1 50 pF 120 pF 14 13 12 11 10 9 8 7 6 5 4 3 2 1 15 k 2N4402 100 k MC3363DW Carrier Detect Indicator – + RLED 15 16 17 18 19 20 21 22 23 24 25 26 27 28 0.022 8.2 k 15 pF 5.0–25 pF 0.01 F2X 3.0 k 0.68 µH 0.68 µH P1 100 k 3.3 µH 4.7 µH 0.1 0.01 X2 + 1.0 µF 0.1 1.0 µF 5.0 µF 10 k 1.0 k pF 10 µH 4.7 µH 20 k 300 Ω 20 k 4 3 2 1 50 k MC34119D L.O. Out (optional) 5 6 7 8 100 µF + 8.0 Ω Spkr RLED is used to adjust LED current: I LED ≈ RLED VCC – VLED F1 – 455 kHz ceramic filter, R in = Rout = 1.5 kΩ to 2.0 k Ω MuRata CFU455X or CFW455X, suffix denotes bandwidth F2 – 10.7 MHz ceramic filter, R in = Rout = 330 Ω MuRata SFE10.7MJ–A, SFA10.7MF5, or SFE10.7MS2A. F2X – 10.7 MHz crystal filter, FOX 10M20A or equivalent. Crystal filters improve adjacent channel and second image (unwanted 48.76 MHz) rejection. Sensitivity is degraded very slightly with this circuit. LC1 – 455 kHz quadrature tank circuit; Toko 7MC8128Z P1 – Volume control, miniature potentiometer, logarithmic taper. X11 – 10.245 MHz fundamental mode crystal, load capacity 32 pF. X2 – 38.97 MHz, 3rd overtone crystal, series mode. 0.68 µ H adjustable coil; Coilcraft M1287–A 0.22 µ H adjustable coil; Coilcraft M1175–A + + Figure 4. Single Channel Narrowband FM Receiver at 49.67 MHz + – RF Input 49.67 MHz 50 Ω MC3363 Figure 4. MOTOROLA ANALOG IC DEVICE DATA MOTOROLA ANALOG IC DEVICE DATA 11 9 2.0 k 10 2 Bias 4 3 1.0 k 25 26 27 Bias Bias 1 24 1.0 k 1.0 k 28 12 100 14 23 8 5 6 Bias Figure 5. Circuit Schematic 13 21 400 16 20 17 15 400 Bias Bias 22 1.4 k 18 19 7 MC3363 Figure 5. 7 MC3363 Figure 6. PC Board Component View with High Performance Crystal Filter Figure 7. PC Board Circuit Side View RF IN Gnd BNC .1 .1 .001 3K 3.3 µH 10 µH 5–25P .1 10K 20K 20K 4.7 µH F2 X 15p SM .1 50K 4.7 µH .1 1.0 100K .022 8.2K 9,1M 10K F1 MC3363DW 50p SM .68 µH 5 – 25P 1000p .1 X2 Vcc .01 µH .01 1000p 120p SM 1K X1 .22 68 µ H 300 39p SM 5.0 39K 51K .1 15K 2N 4402 1.0 100 P1 LC1 50K RLED RL 100K SPKR MC3363DW 3.000 I Vcc RF IN Gnd Figure 8. PC Board Component Side Ground Plane SPKR MC3363DW 3.000I 8 MOTOROLA ANALOG IC DEVICE DATA MC3363 OUTLINE DIMENSIONS DW SUFFIX PLASTIC PACKAGE CASE 751F–04 (SO-28L) ISSUE E –A– NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. 15 28 14X –B– 1 P 0.010 (0.25) M B M 14 28X D 0.010 (0.25) M T A S B M S R X 45 _ C 26X –T– G SEATING PLANE K F DIM A B C D F G J K M P R MILLIMETERS MIN MAX 17.80 18.05 7.40 7.60 2.35 2.65 0.35 0.49 0.41 0.90 1.27 BSC 0.23 0.32 0.13 0.29 0_ 8_ 10.01 10.55 0.25 0.75 INCHES MIN MAX 0.701 0.711 0.292 0.299 0.093 0.104 0.014 0.019 0.016 0.035 0.050 BSC 0.009 0.013 0.005 0.011 0_ 8_ 0.395 0.415 0.010 0.029 J MOTOROLA ANALOG IC DEVICE DATA 9 MC3363 Motorola reserves the right to make changes without further notice to any products herein. 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