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Lansdale Semiconductor, Inc. - Serial-Input PLL Frequency Synthesizer ML145157
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The ML145157 is typically used as low–power, phase–locked loop frequency synthesizers. When combined with an external low–pass filter and voltage–controlled oscillator, these devices can provide all the remaining functions for a PLL frequency synthesizer operating up to the device's frequency limit. For higher VCO frequency operation, a down mixer or a prescaler can be used between the VCO and the synthesizer IC.
These frequency synthesizer chips can be found in the following and other applications:
CATV TV Tuning
AM/FM Radios Scanning Receivers
Two–Way Radios Amateur Radio
• Operating Temperature Range: TA = – 40 to 85°C
• Low Power Consumption Through Use of CMOS Technology
• 3.0 to 9.0 V Supply Range
• Fully Programmable Reference and ÷ N Counters
• ÷ R Range = 3 to 16383
• ÷ N Range = 3 to 16383
• fV and fR Outputs
• Lock Detect Signal
• Compatible with the Serial Peripheral Interface (SPI) on CMOS MCUs
• "Linearized" Digital Phase Detector
• Single–Ended (Three–State) or Double–Ended Phase Detector Outputs
• Chip Complexity: 6504 FETs or 1626 Equivalent Gates
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