LUCW3000CCN AGERE [Agere Systems], LUCW3000CCN Datasheet - Page 18

• Manufacturer Part Number: LUCW3000CCN
• Description: W3000 PLL Dual-Band Frequency Synthesizer
• Manufacturer: AGERE [Agere Systems]

W3000 PLL Dual-Band Frequency Synthesizer
MAIN_IN Input Parallel Equivalent Circuit
The input impedance is high, and can best be
represented by the model shown in Figure 9.
Application Example
18
Figure 9. MAIN_IN Parallel Equivalent Circuit
50
33 pF
MAIN_IN
150 pF
VCO
50
C
15 k
33 pF
10 nF
3 k
Figure 10. Application Circuit Diagram
R
2.85 V
2.85 V
1 nF
V
DDC
3
4
1
2
6
7
100 pF
5
V
CPOUT
V
V
MAIN_IN
V
V
DDC
SS
SS
DD
DD
Table 24. MAIN_IN Input Parallel Equivalent
Frequency (MHz)
1
2
1
2
1000
1200
1400
1600
1800
2000
2200
600
800
LOCKDET
Circuit Values
PWRDN
REF_IN
RES
DAT
CLK
LAT
14
12
11
10
13
9
8
C (pF)
0.88
0.87
0.85
0.85
0.86
0.92
1.00
1.10
1.20
1 nF
Advance Data Sheet
Lucent Technologies Inc.
R
18 k
REF
OSCILLATOR
December 1999
µC
R ( )
3680
2650
2370
1970
1580
1230
740
590
480
REF.
V
DDC