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LC72148V - Electronic Tuning PLL Frequency Synthesizer

Features

  • r>.
  • 2 CE Chip enable S 3 DI Input data S 4 CL Clock S 15 VDD Power supply 18 VSSd Ground.
  • 21 22 23 AIN AOUT VSSa Low-pass filter amplifier transistor.
  • Connections to the internal n-channel MOS transistor provided to implement an active low-pass filter for the PLL.
  • A high-speed locking circuit can be implemented by using these.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Ordering number : ENN6974A CMOS IC LC72148V Electronic Tuning PLL Frequency Synthesizer for Car Stereo Systems Overview The LC72148V is a 3 V version of the LC72146 PLL frequency synthesizer that can easily implement a variety of 3 V power supply tuners, including in-car navigation system receivers based on the VICS FM multiplex system. Functions • High-speed programmable divider — FMIN: 10 to 180 MHz ... Pulse swallower technique — AMIN: 2 to 40 MHz ... Pulse swallower technique 0.5 to 10 MHz ... Direct division technique • IF counters — HCTR: 0.4 to 25 MHz ... Frequency measurement — LCTR: 10 to 500 kHz ... Frequency measurement 1.0 to 20 × 103 Hz ... Period measurement • Reference frequency — One of 12 reference frequencies can be selected (Crystal resonator: 7.2 or 4.
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