mc12149 Freescale Semiconductor, Inc, mc12149 Datasheet
mc12149
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mc12149 Summary of contents
Page 1
... MHz. An external tank circuit is used to determine the desired frequency of operation. The VCO is realized using an emitter–coupled pair topology. The MC12149 can be used with an integrated PLL IC such as the MC12202 1.1 GHz Frequency Synthesizer to realize a complete PLL sub–system. The device is specified to operate over a voltage supply range of 2 ...
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... CSR at 100 kHz Offset, 1Hz BW [Notes 2 and 3] Frequency Stability [Notes 3 and 4] Supply Drift Thermal Drift NOTES: 1. CNTL pin tied to ground. 2. Actual performance depends on tank components selected. 3. See Figure 12, 750 MHz tank 5.0 V 10% 2 MC12149 Symbol Value Unit V CC -0 – ...
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... A simplified schematic of the MC12149 is found in Figure 1. The oscillator incorporates positive feedback by coupling the base of transistor Q2 to the collector of transistor Q1. In order to minimize interaction between the VCO outputs and the oscillator tank transistor pair, a buffer is incorporated into the circuit. This differential buffer is realized by the Q3 and Q4 transistor pair ...
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... Figure 2. MC12149 Typical External Component Connections V CC Supply C3a This input can be left open, tied to ground, or tied with a resistor to ground, depending on the desired output amplitude needed at the Q and QB output pair. 2. Typical values for R1 range from 5.0 kΩ kΩ. A simplified linear approximation of the device, package, and typical board parasitics has been developed to aid the designer in selecting the proper tank circuit values ...
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... VCO sensitivity. Increasing the value of C1 tends to increase the sensitivity of the VCO. The parasitic contributions Lp and Cp are related to the MC12149 as well as parasitics associated with the layout, tank components, and board material selected. The input capacitance of the device, bond pad, the wire bond, ...
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... tune Varactor 6 MC12149 Figure 3. MC12149 Typical Layout (Not to Scale) To Prescaler C3a Ç Ç Ç Ç C7 C2a Ç Ç C6a VCO Output 1 L2a C3b Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç ...
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... Figure 5. Typical Supply Pushing, 750 MHz Tank 750 748 746 744 742 740 738 736 734 732 730 2.7 3.0 3.3 MOTOROLA RF/IF DEVICE DATA MC12149 1.5 2.0 2.5 3.0 3.5 Tuning Voltage (V) 3.6 3.9 4.2 4 Supply Voltage (V) –40 C +25 C +85 C 4.0 4.5 5.0 –40 C +25 C +85 C 4.8 5.1 5.4 7 ...
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... CNTL–N/C –10 2.7 3.0 3.3 Figure 7. Typical Current Drain versus Supply, 750 MHz Tank CNTL–N/C 5 2.7 3.0 3.3 8 MC12149 3.6 3.9 4 Supply Voltage (V) CNTL to GND 3.6 3.9 4.2 4 Supply Voltage (V) –40 C +25 C +85 C +25 C (LP) 4.5 4.8 5.0 –40 C +25 C +85 C +25 C (LP) 4 ...
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... Figure 9. Typical Supply Pushing, 1200 MHz Tank 1210 1208 1206 1204 1202 1200 1198 1196 1194 1192 1190 2.7 3.0 3.3 MOTOROLA RF/IF DEVICE DATA MC12149 ( 5.0 V) 1.8 2.4 3.0 3.6 Tuning Voltage (V) 3.6 3.9 4.2 4.5 4 Supply Voltage (V) –40 C +25 C +85 C 4.2 4.8 –40 C +25 C +85 C 5.1 5.4 9 ...
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... Figure 11. Typical VCO Output Spectrum ATTEN 10 RL 0dBm 10dB/ 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 START 10MHz RBW 1.0MHz VBW 1.0MHz 10 MC12149 3.6 3.9 4.2 4 Supply Voltage (V) MOTOROLA RF/IF DEVICE DATA –40 C +25 C +85 C 4.8 5.0 MARKER 909MHz –7.1dBm STOP 10.0GHz SWP 200ms ...
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... Figure 13. Typical Phase Noise Plot, 1200 MHz Tank HP 3048A CARRIER 0 –25 –50 –75 –100 –125 –150 –170 100 1K MOTOROLA RF/IF DEVICE DATA MC12149 784.2MHz 10K 100K 1M L (f) [dBc/Hz] vs f[Hz] 1220MHz 10K 100K 1M L (f) [dBc/Hz] vs f[Hz] 10M 40M 10M 40M 11 ...
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... MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS DIM MIN MAX A 1.35 1.75 A1 0.10 0.25 B 0.35 0.49 C 0.19 0.25 D 4.80 5.00 E 3.80 4.00 e 1.27 BSC H 5.80 6.20 h 0.25 0.50 L 0.40 1. Mfax is a trademark of Motorola, Inc. MC12149/D MOTOROLA RF/IF DEVICE DATA ...