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KB8821 - FREQUENCY SYNTHESIZER

Datasheet Summary

Description

Power supply voltage input for the RF PLL part.

V DD1 must equal VDD2.

In order to reject supply noise, bypass capacitors must be placed as close as possible to this pin and be connected directly to the ground plane.

Features

  • Very low current consumption(8821:3.5mA, 22:4.5mA, 23:5.5mA).
  • Operating voltage range : 2.7 ~ 4.0V.
  • Selectable power saving mode(Icc=1uA typical @3V).
  • Dual modulus prescaler : KB8821/22 KB8823 KB8821/22/23 (RF) 64/65 or 128/129 (RF) 32/33 or 64/65 (IF) 8/9 or 16/17.
  • QFN : Quad Flat Non-leaded(see Addendum).

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Datasheet preview – KB8821

Datasheet Details

Part number KB8821
Manufacturer Samsung
File Size 237.48 KB
Description FREQUENCY SYNTHESIZER
Datasheet download datasheet KB8821 Datasheet
Additional preview pages of the KB8821 datasheet.

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Full PDF Text Transcription

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PRELIMINARY SPECIFICATION (V1.5) FREQUENCY SYNTHESIZER INTRODUCTION The KB8821/22/23 are high performance dual frequency synthesizers with integrated prescalers designed for RF operation up to 1.2GHz/2.0GHz/2.5GHz and IF operation up to 520MHz. The KB8821/22/23 contain dual-modulus prescalers. The RF synthesizer adopts a 64/65 or an 128/129 prescaler(32/33 or 64/65 for the KB8823) and the IF synthesizer adopts an 8/9 or 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 2.7V to 4.0V. The KB8821/22/ 23 are now available in a 20-TSSOP/24-QFN package.
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