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...
KB8823: 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...
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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 |
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.