Linear Integrated Circuits

Frequency Translator using PLL

Frequency Translator using PLL

Frequency Translator using PLL: The Frequency Translator means shifting the frequency of an oscillator by a small factor. Fig. 2.134 shows the block schematic for frequency translator using PLL. It consists of mixer, low pass filter and the PLL. The input frequency fs which has to be shifted is applied to the mixer. Another input […]

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AM Detection using PLL

AM Detection using PLL: AM Detection – A PLL can be used to demodulate AM signals as shown in the Fig. 2.133. The PLL is locked to the carrier frequency of the incoming AM signal. Once locked the output frequency of VCO is same as the carrier frequency, but it is in unmodulated form. The

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PLL FM Detector or Demodulator

PLL FM Detector Circuit or Demodulator

PLL FM Detector or Demodulator: The PLL can be very easily used as an FM detector or demodulator. Fig. 2.131 shows the PLL FM Detector or Demodulator Block Diagram. When the PLL is locked in on the FM signal, the VCO frequency follows the instantaneous frequency of the FM signal, and the error voltage or

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IC 565 PLL

Monolithic Phase Locked Loop IC 565

IC 565 PLL | Pin Diagram | Block Diagram: IC 565 PLL is available in a 14 pin DIP package and 10 pin metal can package. Fig. 2.124 shows 14-pin package configuration for IC 565 and Fig. 2.125 shows the block diagram for IC 565. IC 565 Pin Diagram: IC 565 Pll Block Diagram: The

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Foldback Current Limiting Circuit

Foldback Current Limiting Circuit

Foldback Current Limiting Circuit: The disadvantage of constant current limit is relatively large power dissipation in the series pass transistor when the load terminals are shorted. Thus a large power rating transistor is required. The Foldback Current Limiting technique allows us to provide the necessary load current at rated voltage but reducing the short circuit

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