CS2300-OTP_09 datasheet(1/26 Pages) CIRRUS

Part #	CS2300-OTP

Description	Fractional-N Clock Multiplier with Internal LCO

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Manufacturer	CIRRUS [Cirrus Logic]

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 Cirrus Logic, Inc. 2009

http://www.cirrus.com

Fractional-N Clock Multiplier with Internal LCO

Features

 Clock Multiplier / Jitter Reduction

–

Generates a Low Jitter 6 - 75 MHz Clock

from a Jittery 50 Hz to 30 MHz Clock

Source

 Internal LCO Reference Clock

 Highly Accurate PLL Multiplication Factor

–

Maximum Error Less Than 1 PPM in High-

Resolution Mode

 One-Time Programmability

–

Configurable Hardware Control Pins

–

Configurable Auxiliary Output

 Minimal Board Space Required

–

No External Analog Loop-filter

Components

General Description

The CS2300-OTP is an extremely versatile system

clocking device that utilizes a programmable phase lock

loop. The CS2300-OTP is based on a hybrid analog-

digital PLL architecture comprised of a unique combina-

tion

of

a

Delta-Sigma

Fractional-N

Frequency

Synthesizer and a Digital PLL. This architecture allows

for generation of a low-jitter clock relative to an external

noisy synchronization clock with frequencies as low as

50 Hz. The CS2300-OTP has many configuration op-

tions which are set once prior to runtime. At runtime

there are three hardware configuration pins available for

mode and feature selection.

The CS2300-OTP is available in a 10-pin MSOP pack-

age in Commercial (-10°C to +70°C) grade. Customer

development kits are also available for custom device

prototyping, small production programming, and device

evaluation. Please see “Ordering Information” on

page 25 for complete details.

Auxiliary

Output

6 to 75 MHz

PLL Output

Frequency Reference

3.3 V

Fractional-N

Frequency Synthesizer

Digital PLL & Fractional

N Logic

Output to Input

Clock Ratio

N

PLL Output

Lock Indicator

50 Hz to 30 MHz

Frequency Reference

LCO

Hardware Configuration

Hardware Control

AUG '09

DS844F1

CS2300-OTP

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CS2300-OTP Datasheet(PDF) 1 Page - Cirrus Logic

CS2300-OTP Datasheet(HTML) 1 Page - Cirrus Logic

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