PE3282A PEREGRINE [Peregrine Semiconductor Corp.], PE3282A Datasheet - Page 10

• Manufacturer Part Number: PE3282A
• Description: 1.1 GHz/510 MHz Dual Fractional-N PLL IC for Frequency Synthesis
• Manufacturer: PEREGRINE [Peregrine Semiconductor Corp.]

PE3282A
Phase Comparator Characteristics
PLL1 has the timing relationships shown below for f
internal PLL1 charge pump to source current and DOWN1 directs the PLL1 internal charge pump to sink current. If C
LOW, UP1 and DOWN1 are interchanged.
PLL2 has the timing relationships shown below for f
internal PLL2 charge pump to source current and DOWN2 directs the PLL2 internal charge pump to sink current. If C
LOW, UP2 and DOWN2 are interchanged.
Figure 6. Phase Comparator Timing Diagram
Note 1: f
DOWN1(2)
(Note 1)
(Note 1)
(Note 1)
UP1(2)
LD1(2)
f
f
p
c
1(2)
1(2)
c
1(2), f
p
1(2), and LD1(2) are accessible via the f
f
c
leads f
p
f
c
= f
p
c
c
o
1, f
2, f
f
LD pin per programming in Table 10.
c
lags f
p
p
1, LD1, UP1, and DOWN1. When C
2, LD2, UP2, and DOWN2. When C
p
f
c
lags f
p
f
11
21
c
lags f
= HIGH, UP1 directs the
= HIGH, UP2 directs the
p
Document 70/0002~07B
11
21
=
=