Analog Devices AD9361

AD9361 Reference Manual UG-570
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BBPLL CHARGE PUMP
The charge pump has programmable output current from
25 µA to 1575 µA in 25 µA steps. In addition, a programmable
bleed current is available. This is an NMOS current source
programmable from 0 µA to 316 µA.
BBPLL LOOP FILTER
The loop filter is fully integrated on-chip and is a standard
passive Type II third-order filter with five programmable
components. The filter is programmed by the
ad9361_bbpll_set_rate function.
Fig
ure 8. BBPLL Internal Loop Filter (R2 and C3 Can Be Bypassed)
R1
C1
C2
R2
C3
VCO TUNEI
CP
11668-009
Rev. A