PE3238
1.5 GHz Integer-N PLL for Low Phase Noise Applications

Peregrine's PE3238 is a high performance integer-N PLL capable of frequency synthesis up to 1.5 GHz. The superior phase noise performance of the PE3238 is ideal for applications such as LMDS / MMDS / WLL basestations and demanding terrestrial systems.

The PE3238 features a 10/11 dual modulus prescaler, counters and a phase comparator. Counter values are programmable through either a serial or parallel interface and can also be directly hard wired. This programming flexibility, combined with the dual latch architecture enabling ping-pong loading of the main divide counter, makes these PLLs well suited as the core for fractional-N or sigma-delta implementation. It is offered in a 44-lead PLCC package.

Application Notes

• AN8 - Design Considerations for Using the PE3236 in the Qualcomm Q0420 Evaluation Kit
• AN9 - Performance Advantages of the PE3236 Compared to the Q3236
• AN 10 - Connecting the PE9601 and PE3236 Serial Bus Interface
• AN 11 - Replacing Qualcomm's Q3236 with Peregrine Semiconductor's PE3236
• AN 12 - Considerations for Using the PE323x/PE333x in Fractional-N or Sigma-Delta Designs