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KB8821

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 (RF) 64/65 or 128/129KB8823 (RF) 32/33 or 64/65KB8821/22/23 (IF) 8/9 or 16/17...

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SeekIC No. : 004384165 Detail

KB8821: 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 modulu...

KB8821 Data Sheet

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Part Number:
KB8821
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/23

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Product Details

Description



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 (RF) 64/65 or 128/129
KB8823 (RF) 32/33 or 64/65
KB8821/22/23 (IF) 8/9 or 16/17
• Programmability via serial bus interface
• No dead-zone PFD
• Variable charge pump output current
• High speed lock mode


Application

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


Pinout

Connection Diagram


Specifications

Characteristic
Symbol
Ratings
Unit
Power Supply Voltage
VDD
5.5
V
Power Dissipation
PD
600
mW
Operating Temperature
Ta
-40°C ~ +85°C
°C
Storage Temperature
TSTG
-65°C ~ +150°C
°C



Description

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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