Features: • 1.5 GHz operation• ÷10/11 dual modulus prescaler• Internal phase detector• Serial, parallel or hardwired programmable• Low power ¾ 20 mA at 3 V• Q3236 PLL replacement• Ultra-low phase noisePinoutSpecifications Symbol Parameter/Cond...
PE3238: Features: • 1.5 GHz operation• ÷10/11 dual modulus prescaler• Internal phase detector• Serial, parallel or hardwired programmable• Low power ¾ 20 mA at 3 V•...
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Symbol | Parameter/Conditions | Max | Max | Units |
VDD | Supply voltage | -0.3 | 4.0 | V |
VI | Voltage on any input | -0.3 | VDD + 0.3 | V |
II | DC into any input | -10 | +10 | mA |
IO | DC into any output | -10 | +10 | mA |
Tstg | Storage temperature range | -65 | 150 |
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 as shown in Figure 1. Counter values are programmable through either a serial or parallel interface and PE3238 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 PE3238 well suited as the core for fractional-N or sigma-delta implementation.
The PE3238 is optimized for terrestrial applications. PE3238 is manufactured on Peregrine's UltraCMOS™ process, a patented variation of silicon-on-insulator (SOI) technology on a sapphire substrate, offering the performance of GaAs with the economy and integration of conventional CMOS.