National LMX2525 Data Sheet
Summary
A high-performance dual-frequency RF synthesizer optimized for wireless communication devices, such as Japan PDC handsets operating at 800 MHz and 1500 MHz. Featuring integrated VCOs in a compact package, it delivers low noise performance, fast lock time, and low power consumption. This technical manual provides comprehensive details on the system's architecture, pinout, operating conditions, and specifications necessary for reliable RF signal generation in advanced communication systems.
Manual Details
| Brand | National |
|---|---|
| Pages | 17 |
| File Size | 216.82 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What external component is necessary to set the resonant frequency of the RF2 VCO?
An external inductor must be required between pins L1 and L2.
How quickly does the system achieve lock on both frequency bands?
The unit features a fast lock time, achieving synchronization in 300 µs.
What voltage supply range must be used for the digital circuitry?
The operational supply voltage ranges from 2.5 V to 3.3 V.
How does the LMX2525 transfer its serial data?
Serial data is transferred via a three-wire MICROWIRE interface, utilizing DATA, LE, and CLK lines.