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NTE1254 Integrated Circuit Phase–Lock Loop (PLL) Frequency Synthesizer for CB
Features: D Programmable Divider – Divided by 3 to 255 D 10–Bit Divider D Phase Detector D Reference Oscillation Circuit D On–Chip Filter Amplifier D Code Converter D Only two or three crystals required for CB radio AM frequency selection D Unlocked signals are detected at instant stop “IS” terminal D Two type program mode can be selected to change input mode level M: Low level . Binary code input enables, divided by 3 to 255 M: High level . BCD code enables that the data at P1 to P6 port is offset 90 by code converter D Internal active filter amplifier has a long holding time due to very high input impedance characteristics of the CMOS–this is to obtain very good spurious response.
NTE1254 Datasheet
