Details, datasheet, quote on part number: KB8822
PartKB8822
CategoryCommunication => Telephony
DescriptionDescription = KB8822 Frequency Synthesizer ;; Function = - ;; Features = 2.0GHz,520MHz Integer-n Dual PLL Frequency Synthesizer ;; Package = 20TSSOP,24QFN ;; Production Status = Mass Production
CompanySamsung Semiconductor, Inc.
DatasheetDownload KB8822 datasheet
  

 

Features, Applications

The KB8821/22/23 are high performance dual frequency synthesizers with integrated prescalers designed for RF operation to 1.2GHz/2.0GHz/2.5GHz and IF operation to 520MHz. The KB8821/22/23 contain dual-modulus prescalers. The RF synthesizer adopts or 64/65 for the KB8823) and the IF synthesizer adopts a 16/17 prescaler. Using a proprietary digital phase-locked-loop technique, the KB8821/22/23 have linear phase detector characteristic and can be used for very stable, low noise local oscillator signal. Supply voltage can range from to 4.0V. The KB8821/22/ 23 are now available a 20-TSSOP/24-QFN package.

FEATURES

Very low current 22:4.5mA, 23:5.5mA) Operating voltage range ~ 4.0V Selectable power saving mode(Icc=1uA typical @3V) Dual modulus prescaler :

APPLICATIONS

Cellular telephone systems : KB8821 Portable wireless communications : KB8822 (PCS/PCN, cordless) Wireless Local Area Networks (W-LANs) : KB8823 Other wireless communication systems

Programmability via serial bus interface No dead-zone PFD Variable charge pump output current High speed lock mode

finRF + RF Prescaler RF N Counter RF Phase Detector RF LD CLOCK LE DATA Serial Data Control foLD Data Out Multiplexer foLD RF Charge Pump CPoRF

RF R Counter OSCin IF R Counter finIF + IF Prescaler IF N Counter IF Phase Detector

CPoRF 3 RF Prescaler GND 4 + finRF 5 Prescaler Control RF Programmable Counter IF Programmable Counter Prescaler Control + IF Prescaler

finRF 6 RF N-Latch GND 7 IF N-Latch 20-bit Shift Register RF R-Latch IF R-Latch 2-bit Control

1. pin #9 = pin #17(internally connected). 2. Do not tie up Vp and VDD Vp is the source of digital noises. The power for analog part is supplied by VDD. If Vp and VDD are tied together, noisy Vp corrupts the power source for the analog part.


 

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