W3000 Datasheet, PDF (4/28 Pages) Agere Systems – W3000 PLL Dual-Band Frequency Synthesizer

W3000 PLL Dual-Band Frequency Synthesizer
Advance Data Sheet
December 1999
Pin Information
VDDC
CPOUT
VSS1
VSS2
MAIN_IN
VDD1
VDD2
1
14
2
13
3
12
4
11
5
10
6
9
7
8
Figure 3. Pin Diagram
LAT
DAT
CLK
PWRDN
REF_IN
RES
LOCKDET
Table 1. Pin Descriptions
Pin Symbol Function
Name/Description
1
VDDC
Supply Charge Pump Positive Supply Voltage. Must be ≥VDD. (VDD = VDD1 = VDD2).
2 CPOUT Output Charge Pump Output.
3
VSS1
Ground Ground 1. Charge pump and logic ground.
4
VSS2
Ground Ground 2. Prescaler and reference ground.
5 MAIN_IN Input VCO Signal Input. Must be ac-coupled.
6
VDD1
Supply Voltage Supply 1. Prescaler supply voltage.
7
VDD2
Supply Voltage Supply 2. Logic and reference supply (must be equal to VDD1).
8 LOCKDET Output Lock Detect Output.
9
RES
Input External Resistor Input. Add resistor to VDDC if required (>10 kΩ).
10 REF_IN
11 PWRDN
Input
Input
Reference Frequency Input. Connection from reference oscillator. Must be ac-
coupled.
Powerdown. For low current operation. (Low is powerdown mode.)
12
CLK
Input Serial Input. Programming clock line.
13
DAT
Input Serial Input. Programming data line.
14
LAT
Input Serial Input. Programming latch line.
4
Lucent Technologies Inc.