Power supply filtering

For the power supply filtering, low inductance surface

mount capacitors are normally required. It has been

found that very good RF decoupling is provided on

each supply using a 1000pF NPO size 0805 or smaller

ceramic surface mount capacitor, closest to the device

pin, with an adjacent 0.1 F X7R capacitor. Other

configurations are possible and it may be found that a

single 0.01 F X7R capacitor on each supply gives good

results. However this should be supported by larger

decoupling capacitors elsewhere on the printed circuit

board. Values of 1 to 10 F are recommended

particularly where the voltage regulators are located

more than a few inches from the device. These larger

capacitors are recommended to be solid tantalum

electrolytic or ceramic types.

ZXFV302EV

SEMICO NDUC TORS

ISSUE 1 - SEPTEMBER 2004

3

Europe

Zetex GmbH

Streitfeldstraße 19

D-81673 München

Germany

Telefon: (49) 89 45 49 49 0

Fax: (49) 89 45 49 49 49

europe.sales@zetex.com

Americas

Zetex Inc

700 Veterans Memorial Hwy

Hauppauge, NY 11788

USA

Telephone: (1) 631 360 2222

Fax: (1) 631 360 8222

usa.sales@zetex.com

Asia Pacific

Zetex (Asia) Ltd

3701-04 Metroplaza Tower 1

Hing Fong Road, Kwai Fong

Hong Kong

Telephone: (852) 26100 611

Fax: (852) 24250 494

asia.sales@zetex.com

Corporate Headquaters

Zetex Semiconductors plc

Zetex Technology Park, Chadderton

Oldham, OL9 9LL

United Kingdom

Telephone (44) 161 622 4444

Fax: (44) 161 622 4446

hq@zetex.com

These offices are supported by agents and distributors in major countries world-wide.

This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied or reproduced

for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Company

reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service.

For the latest product information, log on to www.zetex.com

© Zetex Semiconductors plc 2004

QTY CCT - REF

VALUE DESCRIPTION

Resistors, surface mount

1

R1,

51R

0805

2

R2,R3

1k

0805

1

R4

120R

0805

1

R5

10R

0805

1

R6

62R

0805

4

R1 to R4

51R

0805

4

R5toR8

22k

0805

1

R9

120R

0805

1

R10

62R

0805

1

R11

10R

0805

5

R12 - R16

47k

0805

Capacitors, surface mount

2

1nF

50V ceramic 0805 NPO

6

100nF

25V ceramic 0805 XR7

210 F

16V Tant Elec size C

Integrated circuits

1

U1

Zetex ZXFV302N16

Miscellaneous

5

BNC socket, PCB straight flange,

e.g. Tyco B35N14H999X99

1

3-way PCB screw terminal

block IMO 20.501/3SB

1

SW1

DIL switch, 8 way

10

TP1 to

TP10

PCB test terminal, red,

W.Hughes 100-107

Evaluation board parts list