W3000 datasheet(4/28 Pages) AGERE

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Advance Data Sheet

W3000 PLL Dual-Band Frequency Synthesizer

December 1999

Lucent Technologies Inc.

Pin Information

VDDC

CPOUT

VSS1

MAIN_IN

LAT

DAT

LOCKDET

REF_IN

PWRDN

CLK

RES

VSS2

VDD1

VDD2

Figure 3. Pin Diagram

Table 1. Pin Descriptions

Symbol

Function

Name/Description

VDDC

Supply

Charge Pump Positive Supply Voltage. Must be

≥VDD. (VDD = VDD1 = VDD2).

CPOUT

Output

Charge Pump Output.

VSS1

Ground

Ground 1. Charge pump and logic ground.

VSS2

Ground

Ground 2. Prescaler and reference ground.

MAIN_IN

Input

VCO Signal Input. Must be ac-coupled.

VDD1

Supply

Voltage Supply 1. Prescaler supply voltage.

VDD2

Supply

Voltage Supply 2. Logic and reference supply (must be equal to VDD1).

LOCKDET

Output

Lock Detect Output.

RES

Input

External Resistor Input. Add resistor to VDDC if required (>10 k

Ω).

REF_IN

Input

Reference Frequency Input. Connection from reference oscillator. Must be ac-

coupled.

PWRDN

Input

Powerdown. For low current operation. (Low is powerdown mode.)

CLK

Input

Serial Input. Programming clock line.

DAT

Input

Serial Input. Programming data line.

LAT

Input

Serial Input. Programming latch line.

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