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LMX2330A Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LMX2330A
Description  PLLatinum™ Dual Frequency Synthesizer for RF Personal Communications
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LMX2330A Datasheet(HTML) 3 Page - National Semiconductor (TI)

 
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(Continued)
Pin Description (Continued)
Pin
No.
Pin
Name
I/O
Description
20
V
CC2
Power supply voltage input for IF analog, IF digital, MICROWIRE, F
oLD, and oscillator circuits.
Input may range from 2.7V to 5.5V. V
CC2 must equal VCC1. Bypass capacitors should be placed
as close as possible to this pin and be connected directly to the ground plane.
Block Diagram
DS012331-27
Notes:
The RF prescaler for the LMX2331A/32A is either 64/65 or 128/129, while the prescaler for the LMX2330A is 32/33 or 64/65.
VCC1 supplies power to the RF prescaler, N-counter, R-counter and phase detector. VCC2 supplies power to the IF prescaler, N-counter, phase detector,
R-counter along with the OSCin buffer, MICROWIRE, and FoLD. VCC1 and VCC2 are clamped to each other by diodes and must be run at the same voltage
level.
VP1 and VP2 can be run separately as long as VP ≥ VCC.
www.national.com
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