PT4302

V1.2

3

October 2012

APPLICATION CIRCUIT

VSSLO

1

VSSRF

2

ANT

3

VRF

4

MIXOUT

5

VBB

6

IFIN

7

VDD5

8

VSSBB

9

SELB

10

SELA

11

CE

12

DO

13

CTH

14

VLO

15

REFOSC

16

PTC

PT4302-X

X1

C3

C1

L1

C2

F1

C5

C4

U1

VDD5

C6

L2

R1

R2

R3

R4

R5

R6

BILL OF MATERIALS

Part

Value

Unit

Description



315 MHz

433.92 MHz

L1

82 n

47 n

H

Antenna input matching, coil inductor

L2

39 n

27 n

H

Antenna ESD protection, coil inductor

(optional)

C1

1.8 p

1.0 p

F

Antenna input matching

C2, C3, C4

100 n

100 n

F

Power supply de-coupling capacitor

C5

470 n

470 n

F

C6

220 p

220 p

F

Depends on crystal oscillator vendor, for

frequency fine tuning

R1

10

10



Power supply de-coupling resistor (optional)

R2, R3, R4, R5

10 K

10 K



MCU interface resistor (optional)

R6

8.2 M

8.2 M



For reducing data output noise (optional)

F1

10.7

10.7

MHz

Band-pass filter

X1

9.509

13.226

MHz

Reference crystal oscillator

U1

PT4302 IC

PT4302 IC

U1

Receiver chip

Notes:

1. L1 and C1 are the components for input matching network. They may have to be adjusted with different PCB layout and antenna requirement.

2. The value of C5 depends upon the data rate and coding pattern.

3. F1 is the 10.7 MHz ceramic filter. The recommended part number is Murata SFELA10M7HA00-B0.

4. The

“optional” components are based on application requirements.