BCM4306 View Datasheet(PDF) - Broadcom Corporation
Part Name
Description
MFG CO.
'BCM4306' PDF : 42 Pages View PDF
PLL Description
• Full Integration
• Integer-N PLL with programmable loop bandwidth
•
“Fractional-VCO†” with fvco = 2/3 frf
– Reduces pulling from high-power on-chip PA
– Reduces transmitter LO feed-through
– Reduces receiver DC offsets due to self-mixing
• Automatic frequency control integrated into PLL
• PLL achieves PN of < -100dBc/Hz@30KHz offset withfrf = 5.24 GHz
PLL
1/2
†H. Darabi, et. al., ISSCC 2001
XO
3rd-LPF
3rd-LPF
Crystal
Clock out
AFC_I in
AFC_Q in
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