W55RFS27T1B datasheet(13/15 Pages) ETC2

Part #	W55RFS27T1B

Description	Super-Regeneration RF Transmitter

PDF	15 Pages

Scroll/Zoom	100%

Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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13 / 15 page

W55RFS27T1B DataSheet

Revision: A3.0

Publish Date: Feb. 2010

- 13 -

Revision A1

4.1.4 Application Circuit for FCC

{Do c}

{Re vCo de}

W5 5RFS 27T 1B Ap pl ic atio n Ci rcui t For FCC(27MHz)

We dne sda y, Ju ly 14 , 20 04

T itl e

S ize

Docu ment Nu mber

Rev

Date:

S hee t

V DD

Fundamental Crystal

Dependent on Antenna

5.6u H

A NT E NNA

10 0p

C13

10 0p

S W3

Le ft-tu rn

27 0nH

S W4

Rig ht-T urn

W5 5RFS 27T 1B

T XOUT

CKS E L0

V DD

V SS

A NT

CKS E L1

RES E T

ID1

ID0

T ES T

LE D

LE D1

30 0

S W1

Fo rward

S W2

B ackward

B T1

2.2~5.5V

C19

47 n

C18

10 0u

2.2u H

10 0p

15 p

2.2u H

27 .1 45MHz

T XOUT

4.2 uC-Mode Control Signal

Power down

Oscillator

S1(~TXD)

S2(~ENB)

Chip Enabled

Chip disabled

3ms

ANT

W55RFS27T1B Datasheet(PDF) 13 Page - List of Unclassifed Manufacturers

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