al2007la Samsung Semiconductor, Inc., al2007la Datasheet

al2007la

Manufacturer Part Number

al2007la

Description

Description = AL2007LA 20MHz ~ 170MHz FSPLL ;; Function = FSPLL ;; Configuration = 20MHz~170MHz PLL ;; Library Type = STD90 ;; Characteristic = 3.3V/3.5mA

Manufacturer

Samsung Semiconductor, Inc.

Datasheet

1.AL2007LA.pdf (16 pages)

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0.35 m 20MHZ-170MHZ FSPLL

GENERAL DESCRIPTION

The AL2007LA is a Phase-Locked Loop (PLL) frequency synthesizer constructed in CMOS on single monolithic

structure. The PLL macrofunctions provide frequency multiplication capabilities.

The output clock frequency Fout is related to the reference input clock frequency Fin by the following equation:

Where, Fout is the output clock frequency. Fin is the reference input clock frequency. m,p and s are the values for

programmable dividers. AL2007LA consists of a phase/Frequency Detector(PFD), a Charge Pump an External

Loop Filter, a Voltage Controlled Oscillator(VCO), a 6bit Pre-divider, an 8bit Main divider and 2bit Post Scaler as

shown in Figure1.

FEATURES

— 0.35um CMOS device technology

— 3.3 Volt Single power supply

— VCO frequency range: 60~170MHz

— Output frequency range: 20~170MHz

— Jitter ±150ps

— Duty ratio 40% to 60% at 170MHz

— Frequency changed by programmable divider

— Power down mode

FUNCTIONAL BLOCK DIAGRAM

Fout = ( m*Fin ) / ( p* 2S)

Please contact SEC application engineer to confirm the proper selection of M,P,S value.

Fin

Pre Divider

Figure 1. Phase Lockd Loop Block Diagram

PFD

IMPORTANT NOTICE

Charge

Main Divider

Pump

(External)

Loop

Filter

VCO

Post Scaler

Fout

AL2007LA

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