EVB72016 Melexis Company, EVB72016 Datasheet - Page 7

• Manufacturer Part Number: EVB72016
• Description: 433mhz Fsk/ask Transmitter Evaluation Board Description
• Manufacturer: Melexis Company

3 50
Fig. 6:
3.1 Board Component Values
Note 1: depends on crystal parameters, other ∆f values can be selected with other CX1, CX2 values
3901272016 01
Rev. 004
CX1
CX1
XTAL
Part
CM1
CM2
CM3
CCK
RPS
CX2
CB0
CB1
LM
CK
R1
LT
_ASK
_FSK
Ω
Circuit diagram with 50 Ω matching network
NIP – not in place, may be used optionally
Connector Board Circuit Diagram
6x3.5
Size
0805
0805
0805
0805
0805
0805
0805
0805
0805
0805
0805
1206
0805
SMD
0805
@ 433.92 MHz
18 pF/ 180 pF
±30ppm cal., ±30ppm temp.
220 nF
330 pF
Value
5.6 pF
33 nH
33 nH
10 pF
82 pF
10 pF
18 pF
27 pF
1 nF
NIP
0 Ω
13.5600 MHz
Tolerance
±20%
±10%
±10%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
Page 7 of 12
impedance matching capacitor
impedance matching capacitor
impedance matching capacitor
impedance matching inductor
output tank inductor
XOSC FSK capacitor (Δf = ±20 kHz), note 1
XOSC ASK capacitor, trimmed to f
XOSC capacitor (Δf = ±20 kHz), note 1, only needed for FSK
capacitor to control clock voltage swing (CKDIV 0 / 1)
power-select resistor, see data sheet section 4.6 and 4.7
ASK jumper (for ASK only), see data sheet section 4.7
de-coupling capacitor
de-coupling capacitor
fundamental-mode crystal,
CL = 10 pF, C0, max = 5 pF, R1 = 50 Ω
ROI coupling capacitor, only required for
external reference frequency input
433MHz FSK/ASK Transmitter
Evaluation Board Description
Description
EVB72016
C
, note 1
EVB Description
June/07