P2027A Alliance Semiconductor, P2027A Datasheet

P2027A

Manufacturer Part Number

P2027A

Description

Manufacturer

Alliance Semiconductor

Datasheets

1.P2027A.pdf (9 pages)

2.P2027A.pdf (7 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Euro Chip Distribution

Part Number:

P2027AF-08TR

Quantity:

2 130

Current page: 1 of 9
Download datasheet (543Kb)

October 2003

rev E

Features

Product Description

The P2027 is a versatile spread spectrum frequency

modulator designed specifically for digital camera

and other digital video and imaging applications. The

P2027 reduces electromagnetic interference (EMI) at

Block Diagram

2575, Augustine Drive • Santa Clara, CA • Tel: 408.855.4900 • Fax: 408.855.4999 • www.alsc.com

FCC approved method of EMI attenuation

Provides up to 20 dB of EMI suppression

Generates a low EMI spread spectrum clock of

the input frequency

Optimized for 27 MHz operation

Internal

components and board space

3 selectable spread ranges and 2 modulation

rate options

SSON control pin for spread spectrum enable

and disable options

Low cycle-to-cycle jitter

3.3V operating voltage

16 mA output drives

TTL or CMOS compatible outputs

Low power CMOS design

Supports digital camera and other digital video

and imaging applications

Available in 8 pin SOIC and TSSOP

loop

filter

Notice: The information in this document is subject to change without notice.

minimizes

General Purpose EMI Reduction IC

Alliance Semiconductor

external

the clock source, which provides system wide

reduction of EMI of all clock dependent signals. The

P2027 allows significant system cost savings by

reducing the number of circuit board layers and

shielding that are traditionally required to pass EMI

regulations.

The P2027 uses the most efficient and optimized

modulation profile approved by the FCC and is

implemented in a proprietary all-digital method.

The P2027 modulates the output of a single PLL in

order to “spread” the bandwidth of a synthesized

clock and, more importantly, decreases the peak

amplitudes

significantly lower system EMI compared to the

typical narrow band signal produced by oscillators

and most frequency generators. Lowering EMI by

increasing a signal’s bandwidth is called “spread

spectrum clock generation”.

Applications

as other imaging and digital video applications like

DVD and VCD players.

The P2027 is targeted towards DSC market as well

its

harmonics.

This

P2027A

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