Evaluation Board Schematic

1
2
3
4
5
6
FM1
1
1
R1
FM
FM2
A
0ohm
Y1 EPCOS B3588
3
4
3
4
1
1
C27
GND
2
1
100pF
5
1
GND
6
R3
5 GND
0ohm
6
C129
DNI
915.00MHz GND
GND
0896BM15A0001
C21 LNA_VREF
DNI
GND
6
1
5
2
4
3 GND
A
PA_IN
RF1126
GND
GND
GND
6
GNDGND
5
BP
4
FM
C20
DNI
U4
GND UP
2
3
BP
1
1
1
GND 2
FM
FM3
U3
PA_VREG
GND GND
C12
1uF
C2
62pF
C24
VDDRF
C141 VDD
GND GND GND
GND 100nF
C
U1
1
SCLK
GND
C81
GND
GND
27
28
GND
29
LNA_OUT
31
30
GND
LNA_VCC
GND
GND
J2
ANT2
0.2pF
23
L3
22
21
VTX2
GND
20
19
C25 6.8nH
3.6pF
C17
3.6pF
VTX1
GND
17
GND
VDDRF
C4
10uF
C3
0.1uF
18
GND
GND
GND
C
GND
C5
GND
1
3
5
7
9
11
13
15
17
19
2
4
6
8
10
12
14
16
18
20
1
3
5
7
9
11
13
15
17
19
LNA_VREF
VRX1
VTX2
GND
2
4
6
8
10
12
14
16
18
20
68pF
62pF
GND
C6
0.1uF
DNI
GND
VDDRF
GND
VDDRF
C13
1nF
P2
HDR_2X10
GND
GDO0
VRX2
CSn
SCLK
SI
SO
FAMILY P/N:
2
3858 Eval Schem.
7628 Thorndike Road
Greensboro, NC 27409
Phone: 336-664-1233
HDR_2X10
GND
DATE:
3
D
3858
TITLE:
04/27/11
1
VRX1
24
GND
0ohm
P1
C14
1uF
U5
2.85V
6
5
4
R4
C22
DNI
VTX1
PA_IN
C8
GND
1
1
6
2
2
5
3
3
GND
100nF
TPS727285DSE
D
GND
B
GND
PA_VREG
VDD
1Kohms
C1
1uF
PA_OUT
C7
GND
L1
VDDRF
Ferrite Bead (Wuerth Elektronik)
GND
GNDGNDGND
C51
GND 100nF
GND
GND C26
PA_IN
12pFGND
4
C41
PA_VCC1
25
GND
VRX2
GND
GND
GDO0
PA_VCC2
PA_VREG
GND
VTX2
GND
PA_BIAS
GND
SCLK SO
LNA_SEL
VDD
6.8nH
C23 C15
3.6pF 3.6pF
16
6
GDO0(ATEST)
10
GND
DF
GND
15
SI
X1
26.0MHz (NX3225GA)
CSn
VTX1
14
11
12
AVDD
RF_N
RF_P
13
14
CSn
C191
100nF
9
ANT1
TX_SWITCH
13
20
GND
7
DNI GND
8
C9 GND
68pF
GND
C10
0.1uF
VRX1
ANT2
12
SI
XOSC_Q1
C11
10uF
U2
RF3858
26
VRX2
RX_SWITCH
11
GND
DGUARD
8
7
GND
15pFGND
6
GND
VDDRF
C19
DCOUPL
19
4.7nH (W/W Coilcraft 0402)
LNA_SEL
5
C181
100nF
10
VDD
5
C18
DNI
C101
9
4
C16
1.5pF
L5
0ohm
AVDD
DVDD
18
R5
CC1101
4
56K
GND
VDD
RBIAS
GD02
17
3
GND
GND
XOSC_Q2
SO(GDO1)
R171
GND
2
16
AVDD
AVDD
15
LNA_SEL
GND
3
LNA_VREG
GND
2
LNA_VREF
GND
100nF GND
LNA_IN
GND
GND 100nF
1
GND
32
0ohm
VDD C111
J1
ANT1
0.2pF
L2
R2
C151 VDD
B
GND
4
5
DRAWN BY:
Michael Coolen
PCB PART NUMBER:
3858-411
REV:
DOC NO:
3858-401
SIZE:
B
PAGE:
1 of 1
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