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LMX2315TM Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LMX2315TM Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 20 page  TLW11766 March 1995 LMX2314LMX2315 PLLatinum TM 12 GHz Frequency Synthesizer for RF Personal Communications General Description The LMX2314 and the LMX2315 are high performance fre- quency synthesizers with integrated prescalers designed for RF operation up to 12 GHz They are fabricated using Na- tional’s ABiC IV BiCMOS process The LMX2314 and the LMX2315 contain dual modulus pre- scalers which can select either a 6465 or a 128129 divide ratio at input frequencies of up to 12 GHz Using a proprie- tary digital phase locked loop technique the LMX231415’s linear phase detector characteristics can generate very sta- ble low noise local oscillator signals Serial data is transferred into the LMX2314 and the LMX2315 via a three line MICROWIRETM interface (Data Enable Clock) Supply voltage can range from 27V to 55V The LMX2314 and the LMX2315 feature very low current consumption typically 6 mA at 3V The LMX2314 is available in a JEDEC 16-pin surface mount plastic package The LMX2315 is available in a TSSOP 20-pin surface mount plastic package Features Y RF operation up to 12 GHz Y 27V to 55V operation Y Low current consumption ICC e 6 mA (typ) at VCC e 3V Y Dual modulus prescaler 6465 or 128129 Y Internal balanced low leakage charge pump Y Power down feature for sleep mode ICC e 30 mA (typ) at VCC e 3V Y Small-outline plastic surface mount JEDEC 0150 wide (2314) or TSSOP 0173 wide (2315) package Applications Y Cellular telephone systems (GSM IS-54 IS-95 RCR-27) Y Portable wireless communications (DECT ISM902-928 CT-2) Y Other wireless communication systems Block Diagram TLW11766 – 1 TRI-STATE is a registered trademark of National Semiconductor Corporation MICROWIRETM and PLLatinumTM are trademarks of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
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