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ML145159
Serial-Input PLL Frequency Synthesizer with Analog Phase Detector
INTERFACES WITH DUAL–MODULUS PRESCALERS
Legacy Device: Motorola MC145159-1 The ML145159 has a programmable 14–bit reference counter, as well as fully programmable divide–by–N/divide–by–A 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 device's frequency limit. For higher VCO frequency operations, a down mixer or a dual–modulus prescaler can be used between the VCO and the PLL.