Features: Small Size5.0 mm X 4.0 mm X 0.75 mm 24-Pin LLP Package RF Synthesizer SystemTwo Integrated VCOsIntegrated Loop FilterLow Spurious, Low Phase Noise Fractional-N RF PLLBased on 10-Bit Delta Sigma ModulatorFrequency Resolution Down to 20 kHz Supports Various Reference Frequencies12.6 MHz, 1...
LMX2525: Features: Small Size5.0 mm X 4.0 mm X 0.75 mm 24-Pin LLP Package RF Synthesizer SystemTwo Integrated VCOsIntegrated Loop FilterLow Spurious, Low Phase Noise Fractional-N RF PLLBased on 10-Bit Delta ...
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Parameter |
Symbol |
Ratings |
Units |
Supply Voltage |
VCC,VDD |
-0.3 to 3.6 |
V |
Voltage on any pin |
VI |
-0.3toVCC+0.3 |
V |
-0.3toVDD+0.3 |
V | ||
Storage Temperature |
TSTG |
-65 to 150 |
|
LMX2525 is a highly integrated, high performance, lowpower frequency synthesizer system optimized for dual-band Japan PDC mobile handsets. Using a proprietary digi-tal phase locked loop technique, LMX2525 generates verystable, low noise local oscillator signals for up and downconversion in wireless communications devices.
LMX2525 includes dual voltage controlled oscillators (VCOs)for the upper and lower Japan PDC frequency bands, a loopfilter, and a fractional-N RF PLL based on a delta sigmamodulator. In concert, these blocks form a closed loop RFsynthesizer system. The RF synthesizer system supportstwo frequency bands:PDC1500 and PDC800.
Serial data is transferred to the device via a three-wireMICROWIRE interface (DATA, LE, CLK).Operating supply voltage ranges from 2.5 V to 3.3 V.
LMX2525 features low current consumption: 10 mA at 2.8 Vwhen operating in the PDC800 mode.LMX2525 is available in a 24-pin leadless leadframe pack-age (LLP).