MC2833 Motorola, MC2833 Datasheet
MC2833
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MC2833 Summary of contents
Page 1
... 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) Low Drain Current ( 2.9 mA Typ) Low Number of External Parts Required – ...
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... AUXILIARY TRANSISTOR DYNAMIC CHARACTERISTICS Current Gain Bandwidth Product ( 3.0 V) Current Gain Bandwidth Product ( 3.0 mA) Collector Base Capacitance ( 3.0 V) Collector Base Capacitance ( Collector Substrate Capacitance ( 3.0 V) Collector Substrate Capacitance ( MC2833 Symbol Value Unit (max 2.8–9 150 ...
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... Crystal X1 is fundamental mode, calibrated for parallel resonance with load. The final output frequency is generated by frequency multiplication within 2. 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. 2. 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. ...
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... Figure 3. Buffer/Multiplier (x3, Pin 14) (16 MHz Fundamental) Figure 5. Doubler Output 76 MHz (Pin 11) Figure 7. Output Spectrum (49.7 MHz) 4 MC2833 Figure 4. Input to Doubler (Pin 13) (49.7 MHz x 3 Component) Figure 6. Spectrum 38 MHz Figure 8. Modulation Spectrum (1.0 kHz Showing Carrier Null) – MOTOROLA ANALOG IC DEVICE DATA 76 MHz ...
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... OUT GND VCC Figure 11. Ground Plane on Component Side MC2833P MOTOROLA ANALOG IC DEVICE DATA MC2833 Figure 9. 144.6 MHz/x12 Multiplier Figure 10. Circuit Side View MC2833P IN 5 ...
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... MC2833P NOTES: Positive artwork provided. Drill holes must be plated to ensure making all ground ( connections! Resistors labelled * are used for biasing of electret microphone if used. Capacitors labelled SM are silver mica. Final board size 1.5 6 MC2833 Figure 12. Component View 2.0 56p 51p X1 XTAL SM SM 390K ...
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... Pin 9 Pin 8 Pin 11 Pin 13 Pin 10 Pin 14 Pin Pin16 Pin 1 2.2 k Pin 2 2.2 k Pin 3 MOTOROLA ANALOG IC DEVICE DATA MC2833 Figure 13. Circuit Schematic 50 Pin 7 820 Pin 520 570 470 4.7 k 120 570 2.2 k 610 120 4 Pin 6.8 k 6.8 k Pin 5 ...
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... DIM MIN MAX MIN MAX A 9.80 10.00 0.386 0.393 B 3.80 4.00 0.150 0.157 C 1.35 1.75 0.054 0.068 D 0.35 0.49 0.014 0.019 F 0.40 1.25 0.016 0.049 G 1.27 BSC 0.050 BSC J 0.19 0.25 0.008 0.009 K 0.10 0.25 0.004 0.009 5.80 6.20 0.229 0.244 R 0.25 0.50 0.010 0.019 Mfax is a trademark of Motorola, Inc. MC2833/D MOTOROLA ANALOG IC DEVICE DATA ...