Order this document by MC2833/D LOW POWER FM TRANSMITTER SYSTEM MC2833 is a one–chip FM transmitter subsystem designed for cordless telephone and FM communication equipment. It includes a microphone amplifier, voltage controlled oscillator and two auxiliary transistors. • Wide Range of Operating Supply Voltage (2.8–9.0 V) • • • • • SEMICONDUCTOR TECHNICAL DATA Low Drain Current (ICC = 2.9 mA Typ) Low Number of External Parts Required – 30 dBm Power Output to 60 MHz Using Direct RF Output + 10 dBm Power Output Attainable Using On–Chip Transistor Amplifiers Users Must Comply with Local Regulations on R.F. Transmission (FCC, DOT, P.T.T., etc) P SUFFIX PLASTIC PACKAGE CASE 648 D SUFFIX PLASTIC PACKAGE CASE 751B (SO–16) Representative Block Diagram PIN CONNECTIONS 16 1 RF Osc 2 Variable Reactance 3 15 Buffer 14 Mic Amp 4 13 – + 12 5 11 6 7 VREF Variable Reactance Output 1 16 Decoupling 2 15 Modulator Input 3 14 Mic Amp Output 4 Tr 2 13 Base Mic Amp Input 5 12 Gnd 6 Tr 2 11 Collector Tr 1 Emitter 7 10 VCC Tr 1 Base 8 9 RF Osc RF Output Tr 2 Emitter Tr 1 Collector 10 ORDERING INFORMATION 8 9 Device Operating Temperature Range SO–16 MC2833D MC2833P TA = – 30 to +75°C Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA Package Plastic DIP Rev 1 1 MC2833 MAXIMUM RATINGS Ratings Symbol Value Unit Power Supply Voltage VCC 10 (max) V Operating Supply Voltage Range VCC 2.8–9.0 V Junction Temperature TJ + 150 °C Operating Ambient Temperature TA – 30 to + 75 °C Tstg – 65 to + 150 °C Storage Temperature Range ELECTRICAL CHARACTERISTICS (VCC = 4.0 V, TA = 25°C, unless otherwise noted) Symbol Pin Min Typ Max Unit ICC 10 1.7 2.9 4.3 mA Output RF Voltage (fo = 16.6 MHz) Vout RF 14 60 90 130 mVrms Output DC Voltage (No input signal) Vdc 14 2.2 2.5 2.8 V Modulation Sensitivity (fo = 16.6 MHz) Modulation Sensitivity (Vin = 0.8 V to 1.2 V) SEN 3 14 7.0 – 10 – 15 – Hz/mVdc Maximum Deviation (fo = 16.6 MHz) Maximum Deviation (Vin = 0 V to 2.0 V) Fdev 3 14 3.0 – 5.0 – 10 – kHz Av 4 5 27 – 30 – 33 – dB Output DC Voltage (No input signal) Vout dc 4 1.1 1.4 1.7 V Output Swing Voltage (Vin = 30 mVrms) Output Swing Voltage (fin = 1.0 kHz) Vout p–p 4 0.8 1.2 1.6 Vp–p THD 4 – 0.15 2.0 % Characteristics Drain Current (No input signal) FM MODULATOR MIC AMPLIFIER Closed Loop Voltage Gain (Vin = 3.0 mVrms) Closed Loop Voltage Gain (fin = 1.0 kHz) Total Harmonic Distortion (Vin = 3.0 mVrms) Total Harmonic Distortion (fin = 1.0 kHz) AUXILIARY TRANSISTOR STATIC CHARACTERISTICS Characteristics Symbol Min Typ Max Unit Collector Base Breakdown Voltage (IC = 5.0 µA) V(BR)CBO 15 45 – V Collector Emitter Breakdown Voltage (IC = 200 µA) V(BR)CEO 10 15 – V Collector Substrate Breakdown Voltage (IC = 50 µA) V(BR)CSO – 70 – V Emitter Base Breakdown Voltage (IE = 50 µA) V(BR)EBO – 6.2 – V Collector Base Cut Off Current (VCB = 10 V) Collector Base Cut Off Current (IE = 0) ICBO – – 200 nA hFE 40 150 – – fT – 500 – MHz Collector Base Capacitance (VCE = 3.0 V) Collector Base Capacitance (IC = 0) CCB – 2.0 – pF Collector Substrate Capacitance (VCS = 3.0 V) Collector Substrate Capacitance (IC = 0) CCS – 3.3 – pF DC Current Gain (IC = 3.0 mA) DC Current Gain (VCE = 3.0 V) AUXILIARY TRANSISTOR DYNAMIC CHARACTERISTICS Current Gain Bandwidth Product (VCE = 3.0 V) Current Gain Bandwidth Product (IC = 3.0 mA) 2 MOTOROLA ANALOG IC DEVICE DATA MC2833 Figure 1. Test Circuit 5.1 µH Mod Out 16.605 MHz Crystal: fo CL Co RS 1 16 2 15 3 14 RF Out 13 Base 2 5 12 Emitter 2 6 11 Collector 2 Emitter 1 7 10 Base 1 8 9 39 pF 0.0047 µF = = = = 16.605 MHz 30 pF 6.1 pF 10 Ω Max 68 pF Mod In Mic Amp Out 4 220 k Mic Amp In MC2833 6.3 k + 47 µF 0.01 µF Collector 1 Figure 2. Single Chip VHF Narrowband FM Transmitter Lt X1 1 4700 p 2 16 RF Osc. Variable Reactance 56 p 15 51 p 100 k 3 Buffer Cc1 14 0.22 µ 47 p 4700 p Mic Amp 4 100 k Deviation Adjust 120 k Audio Input Dynamic Mike 2.7 k 390 k – + 1.0 µ C1 13 5 1.0 k Q2 12 L1 C2 6 4.7 k C3 Re1 7 1.0 k VREF 10 470 p Q1 470 p 8 Electret (alternate) Microphone and biasing 9 C4 L2 Rb1 1000 p 11 Cc2 C5 RF Output 5.0 to 10 dBm (see Note 4) + VCC = 9.0 Vdc 1.0 µF tantalum NOTES: 1. Components versus output frequency: 2. 2. 2. 3. 4. 4. 5. 6. Output RF X1 (MHz) Lt (µH) L1 (µH) L2 (µH) Re1 Rb1 Cc1 Cc2 C1 C2 C3 C4 C5 49.7 MHz 16.5667 3.3–4.7 0.22 0.22 330 390 k 33 p 33 p 33 p 470 p 33 p 47 p 220 p 76 MHz 12.6000 5.1 0.22 0.22 150 300 k 68 p 10 p 68 p 470 p 12 p 20 p 120 p 144.6 MHz 12.05 5.6 0.15 0.10 150 220 k 47 p 10 p 68 p 1000 p 18 p 12 p 33 p Crystal X1 is fundamental mode, calibrated for parallel resonance with a 32 pF load. The final output frequency is generated by frequency multiplication within the MC2833 IC. The RF output buffer (Pin 14) and Q2 transistor are used as a frequency tripler and doubler, respectively, in the 76 and 144.6 MHz transmitters. The Q1 output transistor is a linear amplifier in the 49.7 MHz and 76 MHz transmitters, and a frequency doubler in the 144.6 MHz transmitter. All coils used are 7 mm shielded inductors, CoilCraft series M1175A, M1282A–M1289A, M1312A or equivalent. Power output is ≈ + 10 dBm for 49.7 MHz and 76 MHz transmitters, and ≈ + 5.0 dBm for the 144.6 MHz transmitter at VCC = 8.0 V. Power output drops with lower VCC. All capacitors in microfarads, inductors in Henries and resistors in Ohms unless otherwise specified. Other frequency combinations may be set–up by simple scaling of the 3 examples shown. MOTOROLA ANALOG IC DEVICE DATA 3 MC2833 Figure 3. Buffer/Multiplier (x3, Pin 14) (16 MHz Fundamental) Figure 4. Input to Doubler (Pin 13) (49.7 MHz x 3 Component) Figure 5. Doubler Output 76 MHz (Pin 11) Figure 6. Spectrum 38 MHz 76 MHz Figure 8. Modulation Spectrum (1.0 kHz Showing Carrier Null) Figure 7. Output Spectrum (49.7 MHz) – 43 dB 4 MOTOROLA ANALOG IC DEVICE DATA MC2833 Figure 9. 144.6 MHz/x12 Multiplier Figure 10. Circuit Side View OUT GND VCC IN MC2833P Figure 11. Ground Plane on Component Side MC2833P MOTOROLA ANALOG IC DEVICE DATA 5 MC2833 Figure 12. Component View 2.0″ 120K 1K Re1 .22 µH C1 SM 1Kp Cc1 C3 SM 1.0 390K C2 4.7 Kp 100K 47p MC2833P 4.7 Kp 100K 51p SM 56p SM X1 XTAL Lt L1 1.5″ 470p 4.7 K 2.7K MC2833P NOTES: • • • • • 6 Cc2 Rb1 C4 SM C5 SM 470p 1K L2 1.0 Positive artwork provided. Drill holes must be plated to ensure making all ground (VEE) connections! Resistors labelled * are used for biasing of electret microphone if used. Capacitors labelled ″SM″ are silver mica. Final board size 1.5″ × 2.0″. MOTOROLA ANALOG IC DEVICE DATA MC2833 Figure 13. Circuit Schematic Pin 4 50 Pin 9 50 Pin 7 820 Pin 8 Pin 11 15 k 24 k Pin 12 6.8 k Pin 13 15 k Pin 10 Pin 14 6.8 k 520 570 Pin 5 Pin 15 470 10 k Pin16 18 k 18 k 4.7 k 18 k 8.5 k Pin 1 120 2.2 k 570 2.2 k 610 9.7 k 20.2 k Pin 2 2.2 k 120 4.7 k 2.2 k 18 k 8k 56 k Pin 3 Pin 6 MOTOROLA ANALOG IC DEVICE DATA 7 MC2833 OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 648–08 ISSUE R –A– 16 9 1 8 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. B F C DIM A B C D F G H J K L M S L S SEATING PLANE –T– K H G D M J 16 PL 0.25 (0.010) M T A M D SUFFIX PLASTIC PACKAGE CASE 751B–05 (SO–16) ISSUE J –A– 16 1 P 8 PL 0.25 (0.010) 8 M B S G R K F X 45 _ C –T– SEATING PLANE M D 16 PL 0.25 (0.010) M T B S A S MILLIMETERS MIN MAX 18.80 19.55 6.35 6.85 3.69 4.44 0.39 0.53 1.02 1.77 2.54 BSC 1.27 BSC 0.21 0.38 2.80 3.30 7.50 7.74 0_ 10 _ 0.51 1.01 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS 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 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 9 –B– INCHES MIN MAX 0.740 0.770 0.250 0.270 0.145 0.175 0.015 0.021 0.040 0.70 0.100 BSC 0.050 BSC 0.008 0.015 0.110 0.130 0.295 0.305 0_ 10 _ 0.020 0.040 J DIM A B C D F G J K M P R MILLIMETERS MIN MAX 9.80 10.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.229 0.244 0.010 0.019 Motorola reserves the right to make changes without further notice to any products herein. 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