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PE3282A, PE3291, PE3336

Table of contents:
Info of PE3282A
Info of PE3291
Info of PE3336

PE3282A, PE3291, PE3336 Selling Leads, Datasheet

MFG:PEREGRE Package Cooled:TSSOP D/C:04+

PE3282A, PE3291, PE3336 Datasheet download

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Part Number: PE3282A

MFG: PEREGRE

Package Cooled: TSSOP

D/C: 04+

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PE3291 General Description

The PE3291 is a dual fractional-N FlexiPowerTM phase-lock loop (PLL) IC designed for frequency synthesis. Each PLL includes a FlexiPowerTM prescaler, phase detector, charge pump and onboard fractional spur compensation.

The FlexiPower prescalers are supplied power on dedicated pins and can operate at a substantial power savings at voltages as low as 0.8 volts, while allowing a 3 volt charge pump supply. For 3 volt only systems, on-chip voltage regulation may be used to generate the prescaler power supplies.

Figure 1 illustrates the implementation of the FlexiPower technology. The prescaler power supply may be provided externally or internally regulated down from VDD. In a typical 950 MHz application the total current consumed by the PLL is 2.1 mA. Operation at reduced current levels provides significant battery life extension. The PE3291 allows the system designer to minimize power consumption by controlling the voltage on the prescaler. For additional operating speeds and current consumptions refer to Figures 5 and 6.

PE3291 provides fractional-N division with power-of-two denominator values up to 32. This allows comparison frequencies up to 32 times the channel spacing, providing a lower phase noise floor than integer PLLs. The 32/33 RF prescaler (PLL1) operates up to 1200 MHz and the 16/17 IF prescaler (PLL2) operates up to 550 MHz.

The PE3291 Phase Locked-Loop 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.

PE3291 Maximum Ratings

Symbol	Parameter/Conditions	Min	Max	Units
V_DD	Supply voltage	-0.3	4.0	V
V_I	Voltage on any input	-0.3	V_DD + 0.3	V
I_I	DC into any input	-10	+10	mA
I_O	DC into any output	-10	+10	mA
T_stg	Storage temperature range	-65	150	°C

PE3291 Features

• Ultra-Low Power via FlexiPower variable supply voltages
• Modulo-32 fractional-N main counters
• On-board fractional spur compensation: No tuning required, stable over temperature
• Improved phase noise compared to integer-N architectures

PE3291 Typical Application

• CDMA handsets
• CDMA base stations
• Analog Cordless phones
• One and two way pagers

PE3291 Connection Diagram

PE3336 General Description

The PE3336 is a high performance integer-N PLL capable of frequency synthesis up to 3.0 GHz. The superior phase noise performance of the PE3336 makes it ideal for applications such as LMDS / MMDS / WLL basestations and demanding terrestrial systems. The PE3336 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. It is offered in a 44-lead PLCC and a 48-lead QFN package.

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