DS059_2 Jul ‘01

©2001 Reg. No. 227 4001, ENGLAND

Page 2

FM-RTF3-XXX

Mechanical Dimensions

Pin Description

Pin Number

Name

Description

1

EA

External Antenna

2

IN

Data input

6

GND

Ground, Connect to RF earth return path

7

Vcc

Supply Voltage

Typical Application

Antenna Configuration

1

2

6 7

Component Side

22.86mm

11.43mm

2.54mm 10.16mm

Pins on "0.1 pitch

Pin Dimentions :

0.25mm x 0.50mm

A0

A1

A2

A3

A4

A5

A6

A7

VSS

AD8

AD9

AD10

AD11

TE\

OSC2

OSC1

DOUT

VDD

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

HT12E

+5V

ANTENNA

RFT3-XXX

+5V

1 2

6 7

RF

17.3cm @ 433MHz

RF GND

RF

Loop Antenna Area

4 To 10cm

2

Track Width

1mm

Capacitor 1.5 - 5pF

Fixed or Variable

RF

34 Turns of enamelled copper wire diameter 0.5mm

close wound on 2.5mm diameter former

Helical Coil Antenna

Loop Antenna

Whip Antenna