The PE3238 features a 10/11 dual modulus prescaler, counters and a phase comparator as shown in Figure 1. 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. The PE3238 is optimized for terrestrial applications. Fabricated in Peregrine's patented UTSi (Ultra Thin Silicon) CMOS technology, the PE3238 offers excellent RF performance with the economy and integration of conventional CMOS.