LMX2315 - National Semiconductor

LMX2315 Frequency Synthesizer

The LMX2315 2320 2325’s are high performance frequency synthesizers with integrated prescalers designed for RF operation up to 2 5 GHz They are fabricated using National’s ABiC IV BiCMOS process A 64 65 or a 128 129 divide ratio can be selected for the LMX2315 and LMX2320 RF synthesizer at input frequencies of up to 1 2 GHz and 2 0 GHz while 32 33 and 64 65 .

Features

Y Y Y Y Y Y Y RF operation up to 2 5 GHz 2 7V to 5 5V operation Low current consumption Dual modulus prescaler LMX2325 32 33 or 64 65 LMX2320 LMX2315 64 65 or 128 129 Internal balanced low leakage charge pump Power down feature for sleep mode ICC e 30 mA (typ) at VCC e 3V Small-outline plastic surface mount TSSOP 0 173 wide Applications Y Y Y Y Cellular telephone systems (GSM IS-54 IS-95 (RCR-27) Portable wireless communications (DECT PHS) CATV Other wireless communication systems Block Diagram TL W 12339
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