THERMAL

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES

SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.

FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS

ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR

THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

2011/11/02

DVB_S 27

GP4L_S7LR2

R2704
4.7K
LNB
A_GND
+3.3V_Normal
DCDC_GND
C2700
0.22uF
25V
LNB
A_GND
C2711
10uF
25V
LNB
L2700
33UH
SP-7850_33
LNB
LNB_TX
+12V_LNB
C2702
0.1uF
LNB
C2709 27pF
OPT
R2701 33
LNB
LNB_OUT
C2707
68uF
35V
LNB
L2701
BLM18PG121SN1D
LNB
DEMOD_SCL R2702 33
LNB
DCDC_GND
A_GND
A_GND
C2706
22000pF
LNB
+12V/+15V
C2703
0.1uF
50V
LNB
A_GND
DCDC_GND
DCDC_GND
+12V_LNB
A_GND
DEMOD_SDA
IC2700
A8290SETTR-T
LNB
1
BOOST
3
TCAP
7
TDI
9
VREG
10
SDA
11
ADD
12
SCL
13
NC_2
14
IRQ
15 NC_3
16 NC_4
17 NC_5
18 NC_6
19 BFC
20 NC_7
21 NC_8
22 BFO
23 NC_9
24 BFI
25 VIN
26 LX
27 GNDLX
28 LNB
5
TDO
8
GND
6
EXTM
4
NC_1
2
VCP 29
[EP]
C2708 0.22uF
LNB
C2701
0.01uF
50V
LNB
C2710 27pF
OPT
A_GND
C2705
68uF
35V
LNB
A_GND
R2706
0
R2705
0
D2700
40V
SX34
LNB
D2702
40V
SX34
LNB
C2712
0.1uF
50V
LNB
A_GND
ZD1
40V
LNB
D2703
30V
MBR230LSFT1G
LNB
C2713
1uF
50V
LNB
A_GND

DVB-S2 LNB Part Allegro

DCDC_GND and A_GND are connected

(Option:LNB)

2.4A
Input trace widths should be sized to conduct at least 3A
DCDC_GND and A_GND are connected in pin#27
close to Boost pin(#1)

2A

Ouput trace widths should be sized to conduct at least 2A
Max 1.3A
PCB_GND and A_GND are connected

3A

close to VIN pin(#25)
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