TH71111

868/915MHz

FSK/FM/ASK Receiver

39010 71111

Page 13 of 22

Data Sheet

Rev. 013

June/07

4.1.2

Standard FSK Component List

Part

Size

Value

@ 868.3 MHz

Tolerance

Description

C1

0805

22 pF

±5%

crystal series capacitor

C3

0805

1 nF

±10%

loop filter capacitor

C4

0603

4.7 pF

±5%

capacitor to match SAW filter input

C5

0603

2.7 pF

±5%

capacitor to match SAW filter output

C7

0603

1.0 pF

±5%

MIX1 input matching capacitor

C9

0805

33 nF

±10%

IFA feedback capacitor

C10

0603

1 nF

±10%

IFA feedback capacitor

C11

0603

1 nF

±10%

IFA feedback capacitor

C12

0805

10 pF

±5%

DEMOD phase-shift capacitor

C15

0805

100 pF

±5%

demodulator output low-pass capacitor,

this value for data rates < 20 kbps NRZ

C16

0603

1.5 nF

±10%

RSSI output low-pass capacitor

C17

0805

10 nF

±10%

data slicer capacitor, this value for data rates > 0.8 kbps NRZ

R1

0805

10 k

Ω

±5%

loop filter resistor

R2

0603

330

Ω

±5%

optional CERFIL output matching resistor

R4

0603

330 k

Ω

±5%

data slicer resistor

R5

0805

220 k

Ω

±5%

loading resistor

RL1

0805

470

Ω

±5%

MIX1 bias resistor

RL2

0805

470

Ω

±5%

MIX1 bias resistor

L1

0603

22 nH

±5%

L2

0603

22 nH

±5%

SAW filter matching inductor from Würth-Elektronik

(WE-KI series), or equivalent part

L3

0603

10 nH

±5%

LNA output tank inductor from Würth-Elektronik (WE-KI series),

or equivalent part

XTAL

SMD

6x3.5

26.80000 MHz

@ RF = 868.3 MHz

±25ppm cal.

±30ppm temp.

fundamental-mode crystal from

Telcona/Horizon or equivalent par

SAWFIL

SMD

3x3

SAFCC868MSL0X00

low-loss SAW filter from Murata, or equivalent part

CERFIL

SMD

3.45x3.1

SFECF10M7HA00

ceramic filter from Murata, or equivalent part

CERDIS

SMD

4.5x2

CDSCB10M7GA135

ceramic discriminator from Murata, or equivalent part

• For component values for other frequencies, please refer to the EVB descriptions