W55RFS27T1B DataSheet

11

Revision: A3.0

Publish Date: Feb. 2010

- 11 -

Revision A1

4.1.2 Application Circuit for 6 Control Functions

Set TEST = 0,

1. Used when need F1 and F2.(more than 4 control functions)

2. When use 9V battery, an external power switch is required for power-saving

3. Need extra components to light LED

{Do c}

{Re vCo de}

W5 5RFS 27T 3B Ap pl ic atio n Ci rcui t (49MHz)

A

1

1

T ues day, Jul y 06, 200 4

T itl e

S ize

Docu ment Nu mber

Rev

Date:

S hee t

of

V DD

V SP LY

V DD

V DD

V DD

V DD

V DD

Dependent on Antenna

LED control circuit

Overtone Crystal

Input Protection

For 49MHZ

* 27MHz,(L1,C7)= (56nH, 470pF), (L7,C33)=none

* 35MHz,(L1,C7)= (47nH, 360pF), (L7,C33)=(3.3uH,47n)

* 40MHz,(L1,C7)= (47nH, 300pF), (L7,C33)=(2.2uH,47n)

* 49MHz,(L1,C7)= (39nH, 240pF), (L7,C33)=(1uH,47n)

ID0

ID1

1N41 48

D2

L2

1u H

JP 7

ID1

1

2

3

30 0

R5

JP 6

ID0

1

2

3

A NT E NNA

R1

20 K

C7

24 0p

S W1

Fo rward

1N41 48

D1

C19

47 n

S W2

B ackward

L7

1u H

R4

1K

LE D

LE D1

+

C18

10 u

C13 47 n

10 0u

C0

S W3

Le ft tu rn

S W5

F1

L1

39 nH

R3

1K

49 .8 6MHz

C8 7p

C9

7p

C33

47 n

S W6

F2

S W4

Rig ht turn

U1

W5 5RFS 27T 3B

T XOUT

14

X2

11

CKS E L0

3

V DD

8

V SS

7

A NT

6

CKS E L1

5

RES E T

9

S4

2

S3

1

S2

16

S1

15

ID1

12

ID0

13

T ES T

4

X1

10

JP 3

P ower In

1

2

B T1

B AT

S1

S1

CKS E L0

T XOUT

ID1

S2

S2

ID0

T XOUT

T XOUT

CKS E L1

CKS E L0

CKS E L1

S2

S1

W55RFS27T1B Application Schematic BOM(6-function):

Item

Qty

Reference

Part

________________________________________________________________________________

1

1

C7

240p

2

2

C8,C9

7p

3

3

C13,C19,C33

47n

4

1

C18

10u

5

1

L1

39nH

6

2

L2,L7

1uH

7

1

R1

20K

8

1

U1

W55RFS27T1B

9

1

Y1

49.86MHz