3335-00 datasheet(7/15 Pages) PEREGRINE

Part #	3335-00

Description	3000 MHz UltraCMOS??Integer-N PLL for Low Phase Noise Applications

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Manufacturer	PEREGRINE [Peregrine Semiconductor Corp.]

Direct Link	http://www.peregrine-semi.com

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Product Specification

PE3335

Page 7 of 15

Document No. 70-0049-02

│ www.psemi.com

Functional Description

The PE3335 consists of a prescaler, counters, a

phase detector, a charge pump and control logic.

The dual modulus prescaler divides the VCO

frequency by either 10 or 11, depending on the

value of the modulus select. Counters “R” and “M”

divide the reference and prescaler output,

respectively, by integer values stored in a 20-bit

register.

An additional counter (“A”) is used in

the modulus select logic. The phase-frequency

detector generates up and down frequency control

signals. The control logic includes a selectable

chip interface. Data can be written via serial bus,

parallel bus, or hardwired direct to the pins. There

are also various operational and test modes and

lock detect.

Figure 3. Functional Block Diagram

Control

Logic

Modulus

Select

10/11

Prescaler

M Counter

(9-bit)

R Counter

(6-bit)

Phase

Detector

2 k

Ω

fc

PD_U

PD_D

LD

Cext

fp

R(5:0)

M(8:0)

A(3:0)

D(7:0)

Sdata

Control

Pins

fr

Fin

Charge

Pump

CP

Fin

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3335-00 Datasheet(PDF) 7 Page - Peregrine Semiconductor Corp.

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