W3000 Datasheet, PDF (18/28 Pages) Agere Systems – W3000 PLL Dual-Band Frequency Synthesizer

W3000 PLL Dual-Band Frequency Synthesizer
Advance Data Sheet
December 1999
MAIN_IN Input Parallel Equivalent Circuit
The input impedance is high, and can best be
represented by the model shown in Figure 9.
MAIN_IN
C
R
Figure 9. MAIN_IN Parallel Equivalent Circuit
Table 24. MAIN_IN Input Parallel Equivalent
Circuit Values
Frequency (MHz)
600
800
1000
1200
1400
1600
1800
2000
2200
C (pF)
0.88
0.87
0.85
0.85
0.86
0.92
1.00
1.10
1.20
R (Ω)
3680
2650
2370
1970
1580
1230
740
590
480
Application Example
15 kΩ
150 pF
3 kΩ
10 nF
33 pF
VCO ^{33 pF}
50 Ω
50 Ω
VDDC
2.85 V
1
VDDC
2
CPOUT
1 nF
3
VSS1
4 _VSS2
5 _{MAIN_IN}
2.85 V
6 _VDD1
7 _VDD2
LAT ¹⁴
13
DAT
12
CLK
PWRDN ¹¹
REF_IN ¹⁰
RES ⁹
LOCKDET ⁸
100 pF
µC
1 nF
RREF
18 kΩ
VDDC
REF.
OSCILLATOR
Figure 10. Application Circuit Diagram
18
Lucent Technologies Inc.