Serial-Input PLL Frequency Synthesizer with Aanalog Phase Detector
Interfaces with DualâModulus Prescalers
The MC145159â1 has a programmable 14âbit reference counter, as well as fully programmable divideâbyâN/divideâbyâA counters. The counters are programmed serially through a common data input and latched into the appropriate counter latch, according to the last data bit (control bit) entered.
When combined with a loop filter and VCO, this device can provide all the remaining functions for a PLL frequency synthesizer operating up to the deviceâs frequency limit. For higher VCO frequency operations, a down mixer or a dualâmodulus prescaler can be used between the VCO and the PLL.
⢠Operating Temperature Range: â 40 to 85°C
⢠Low Power Consumption Through Use of CMOS Technology
⢠3.0 to 9.0 V Supply Range
⢠Onâ or OffâChip Reference Oscillator Operation
⢠Compatible with the Serial Peripheral Interface (SPI) on CMOS MCUs
⢠÷ R Range = 3 to 16383
⢠÷ N Range = 16 to 1023, ÷ A Range = 0 to 127
⢠HighâGain Analog Phase Detector
⢠See Application Note AN969
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