Part # LMX2515 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LMX2515 PLLatinum™ Frequency Synthesizer System with Integrated VCO

Part Details:

LMX2515 April 2004 LMX2515 PLLatinum PLLatinumTM Frequency Synthesizer Systemwith Integrated VCOGeneral Description Features LMX2515 is a highly integrated, high performance, low n Small size Frequency power frequency synthesizer system optimized for Japan 5.0 mm X 5.0 mm X 0.75 mm 28-Pin LLP Package PDC mobile handsets. Using a proprietary digital phase n RF Synthesizer System locked loop technique, LMX2515 generates very stable, low Integrated RF VCO noise local oscillator signals for up and down conversion in Integrated Loop Filter wireless communications devices. Low Spurious, Low Phase Noise Fractional-N RF PLL LMX2515 includes a voltage controlled oscillator (VCO), a Based on 10-Bit Delta Sigma Modulator loop filter, and a fractional-N RF PLL based on a delta sigma Frequency Resolution Down to 20 kHz modulator. In concert these blocks form a closed loop RF n Supports Various Reference Frequencies Synthesizer synthesizer system. The LMX2515LQ0701 supports the Ja- 12.6/14.4/25.2/26.0 MHz pan PDC800 band and the LMX2515LQ1321 supports Ja- n Fast Lock Time: 300 µs pan PDC1500 band. n Low Current Consumption Serial data is transferred to the device via a three-wire n 2.5 V to 3.3 V operation MICROWIRE interface (DATA, LE, CLK). n Digital Filtered Lock Detect Output Operating supply voltage ranges from 2.5 V to 3.3 V. n Hardware and Software Power Down Control LMX2515 features low current consumption. LMX2515 is available in a 28-pin leadless leadframe pack- Applications System age (LLP). n Japan PDC systems at 800 MHz frequency band. n Japan PDC systems at 1500 MHz frequency band. Functional Block Diagram with Integrated VCO 20068807 FastLockTM is a trademark of National Semiconductor Corporation.TRI-STATE® is a registered trademark of National Semiconductor Corporation.PLLatinumTM is a trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation DS200688

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LMX2515.pdf Datasheet