DS8911 - National Semiconductor

DS8911 Sound Up-Conversion Frequency Synthesizer

The DS8911 is a digital Phase-Locked Loop (PLL) frequency synthesizer intended for use as a Local Oscillator (LO) in electronically tuned radios The device is used in conjunction with a serial data controller a loop filter some varactor diodes and several passive elements to provide the local oscillator function for both AM and FM tuning The conventional sup.

Features

Y Y Y Y Y Y Direct synthesis of LW MW SW FM and WB frequencies Serial data entry for simplified processor control 10 12 5 25 and 100 kHz reference frequencies 8 possible tuning resolutions (see Table II) An op amp with high impedance inputs for loop filtering Programmable mixer with high dynamic range TRI-STATE is a registered trademark of National Semiconductor Corporation MICROWIRETM is a trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 7398 RRD-B30M105 Printed in U S A Connection Diagram Plastic Chip Carrier TL F 7398
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