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LMX2572LP Datasheet(PDF) 1 Page - Texas Instruments |
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LMX2572LP Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 83 page  Charge Pump Serial Interface CPout Vtune CSB SCK SDI Lock Detect or Register Readback x2 Ramp Generator FSK Generator OSCinP OSCinM RFoutBP RFoutBM RFoutAP RFoutAM MUXout SYNC SysRefReq MULT , ÷2/4/8«/256 RampClk RampDir CE Pre-R Divider Post-R Divider Enable Phase Sync û Modulator N-Divider LDOs Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LMX2572LP SNAS764 – MAY 2018 LMX2572LP 2-GHz Low Power Wideband RF Synthesizer With FSK Modulation 1 1 Features 1 • Output Frequency: 12.5 MHz to 2 GHz • Low Power Consumption: 70 mA at 3.3-V Supply • –124-dBc/Hz Phase Noise at 100-kHz Offset With 800-MHz Carrier • PLL Figure of Merit: –232 dBc/Hz • PLL Normalized 1/f Noise: –123.5 dBc/Hz • 32-Bit Fractional-N Divider • Remove Integer Boundary Spurs With Programmable Input Multiplier • Synchronization of Output Phase Across Multiple Devices • Support for Ramp and Chirp Functions • Support for FSK Direct Digital Modulation • Two Programmable Output Power Level Differential Outputs • Fast VCO Calibration Speed: < 20 µs • Single 3-V to 3.5-V Power Supply 2 Applications • Test and Measurement Equipment • Digital 2-Way Radios • Low Power Radio Communication Systems • Satellite Communication • Wireless Microphones • Propriety Wireless Connectivity • MIMO • High-Speed Data Converter Clocking 3 Description The LMX2572LP is a low-power, high-performance wideband synthesizer that can generate one frequency from 12.5 MHz to 2 GHz without the use of an internal doubler. The PLL delivers excellent performance while consuming just 70 mA from a single 3.3-V supply. For applications like digital mobile radio (DMR) and wireless microphones, the LMX2572LP supports FSK modulation. Discrete level FSK and pulse-shaping FSK are supported. Direct digital FSK modulation is achievable through programming or pins. The LMX2572LP allows users to synchronize the output of multiple devices and also enables applications that need deterministic delay between input and output. The LMX2572LP provides an option to adjust the phase with fine granularity to account for delay mismatch on the board or within devices. A frequency ramp generator can synthesize up to two segments of ramp in an automatic ramp generation option or a manual option for maximum flexibility. The fast calibration algorithm allows the user to change frequencies faster than 20 µs. The LMX2572LP integrates LDOs from a single 3.3-V supply, thus eliminating the need for onboard low- noise LDOs. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LMX2572LP VQFN (40) 6.00 mm × 6.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Functional Block Diagram |
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