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EVB7122 Datasheet, PDF (20/24 Pages) Melexis Microelectronic Systems – 27 to 930MHz Transceiver Evaluation Board Description
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EVB7122
27 to 930MHz Transceiver
Evaluation Board Description
4.3.1 Board Component Values for ASK (peak detector option)
Part
C0
C1
C2
C5
C6
CB0
CB1
CB2
CB5
CB6
CB7
CF1
CF2
CPS
CX1
CRX0
CTX0
CTX1
CTX2
CTX4
R1
R2
RB1
RF
RP
RL0
RPS
RS1...RS3
L0
Size
0603
0603
0603
0603
0603
1210
0603
0603
0603
0603
0603
0603
0603
0603
0805
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
Value @
315 MHz
1.8 pF
3.9 pF
1.5 pF
1.5 nF
100 nF
10 μF
10 nF
330 pF
100 nF
100 pF
100 nF
100 pF
39 pF
1 nF
18 pF
100 pF
10 pF
10 pF
10 pF
12 pF
100 kΩ
680 kΩ
100 Ω
33 kΩ
3.3 KΩ
390 Ω
18 kΩ
10 kΩ
47 nH
Value @
434 MHz
2.2 pF
4.7 pF
1.0 pF
1.5 nF
100 nF
10 μF
10 nF
330 pF
100 nF
100 pF
100 nF
100 pF
39 pF
1 nF
18 pF
100 pF
10 pF
6.8 pF
6.8 pF
4.7 pF
100 kΩ
680 kΩ
100 Ω
33 kΩ
3.3 KΩ
390 Ω
33 kΩ
10 kΩ
27 nH
Value @
915 MHz
1.8 pF
1 pF
1.5 pF
1.5 nF
100 nF
10 μF
10 nF
330 pF
100 nF
100 pF
100 nF
100 pF
39 pF
1 nF
18 pF
10 pF
10 pF
4.7 pF
3.9 pF
1.8 pF
100 kΩ
680 kΩ
100 Ω
33 kΩ
3.3 KΩ
390 Ω
43 kΩ
10 kΩ
3.9 nH
L1
LRX2
LTX0
LTX1
XTAL
CERFIL
0603
0603
0603
0603
HC49
SMD
7x5
SMD
3.45x3.1
33 nH
82 nH
15 nH
33 nH
15 nH
4.7 nH
56 nH
15 nH
33 nH
15 nH
3.9 nH
10 nH
8.0000 MHz
±20ppm cal., ±20ppm temp.
SFECF10M7HA00
B3dB = 180 kHz
Tol.
±5%
±5%
±5%
±10%
±10%
±20%
±10%
±10%
±10%
±10%
±10%
±10%
±5%
±10%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
Description
VCO tank capacitor
LNA output tank capacitor
MIX input matching capacitor
RSSI output low pass capacitor
PKDET capacitor
de-coupling capacitor
de-coupling capacitor
de-coupling capacitor
de-coupling capacitor
de-coupling capacitor
de-coupling capacitor
loop filter capacitor
loop filter capacitor
power-select capacitor
RO capacitor
RX coupling capacitor
TX coupling capacitor
TX impedance matching capacitor
TX impedance matching capacitor
TX impedance matching capacitor
PKDET resistor
PKDET resistor
protection resistor
loop filter resistor
CERDIS loading resistor
CERFIL loading, optionally
power-select resistor
protection resistor
VCO tank inductor
from Würth-Elektronik (WE-KI series)
or equivalent part
LNA output tank inductor
from Würth-Elektronik (WE-KI series)
or equivalent part
impedance matching inductor
from Würth-Elektronik (WE-KI series)
or equivalent part
fundamental-mode crystal from:
Telcona/Hong Kong X’tals
C5L8000000D10F3EHK01
ceramic filter from Murata,
or equivalent part
39012 07122 02
Rev. 005
Page 20 of 24
EVB Description
June/07
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