Datasheet
6 Schematic, PCB Layout, and Bill of Materials
6.1 Schematic
R
T
S
2
3
1
G
J1
MICROPHONE INPUT
C21
1000pF
C22
1000pF
R16
6.81K
R17
6.81K
C19
47uF
C20
47
uF
R7
10
R8
10
R5
*
R14
0
R6
*
R15
0
1
2
J2
1
2
3
4
5
6
J4
C6
0.1u
F
C8
0.1uF
C7
0.1uF
C11
0.1uF
C12
0.1uF
C27
4.7uF
-VA
C26
4.7uF
C9
0.1uF
+VA
C13
0.1uF
C18
4.7u
F
R9
10
NOTE: An asterisk (*) symbol indicates that a component is
n
ot normally installed during assembly.
-
+
VCC EGND GND VCOM VA+ VA-
R4
*
R11
0
R10
0
1
2
JMP
2
Cc1
*
Cc2
*
PHANTOM POWER
12
34
JMP1
C1
0
.1uF
ON
OFF
PO
WER
C3
0.1uF
C2
0.1uF
C15
4.7uF
C4
0.1uF
C16
4.7uF
C5
0.1u
F
C17
4.7uF
1
2
3
4
JM
P3
+VA
-VA
1 2
JMP4
1 2
JMP5
1 2
JMP6
1 2
JMP7
1 2
JMP8
R18
475
R19
475
R20
475
R21
475
R22
475
D1
GPO1
D2
GPO2
D3
GPO3
D4
GPO4
D5
OVR
1
2
JMP10
OE1
1
A1
2
A2
3
A3
4
A
4
5
A5
6
A6
7
A7
8
A
8
9
GND
1
0
Y8
11
Y7
12
Y6
13
Y5
14
Y4
15
Y3
16
Y2
17
Y1
18
OE2
1
9
VCC
20
U
2
S
N74AHCT541PW
C14
0
.1uF
1
2
JMP9
SDO
_RB
RN
1
10K
2
4
6
1
3
5
78
910
J6
DATA_IN
2
4
6
1
3
5
78
910
J7
DATA_OUT
RN2
47K
VCC
1
14
2
15
3
16
4
17
5
18
6
1
9
7
2
0
8
21
9
22
10
23
11
24
12
25
13
J5
PA
RALLEL PORT
2
3
1
4
J3
PREAMP OUT
R2
*
R1
*
R
3
*
R13
0
R12
0
C
25
*
C
23
*
C24
*
Normally, Cc1 and Cc2 are
replaced by wire jumpers.
VCC
VCC
TP7
VIN+
T
P8
VIN-
TP3
VC
C
TP1
AGND
TP2
EGND
TP5
VCO
M
TP4
VA+
TP6
VA-
C10
1000pF
D6
D7
D8
D9
TP9
AGND
-VA
-V
A
+VA
+VA
AGND
1
G
PO1
2
GPO
2
3
GPO3
4
GP
O4
5
OVR
6
DGND
7
SDI
8
CS
9
SC
LK
10
SDO
11
VD-
12
VA-
13
VOUT-
14
VO
UT+
15
VA+
16
VA-
1
7
CS22
18
CS21
19
CS
12
20
CS11
21
VCOMIN
22
V
IN-
23
VIN+
24
U1
PGA25
05DB
D10
BZX85C5V6
D11
BZ
X85C5V6
SDI (N)
CS
SCLK
SDI (N+1)
GND GND
CS
SCLK
R
B
RB
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Schematic, PCB Layout, and Bill of Materials
This chapter provides the electrical schematic and physical PCB layout information for the PGA2505EVM.
The Bill of Materials is included for component reference.
The complete electrical schematic for the PGA2505EVM is shown in Figure 13 . Refer to the Bill of
Materials in Table 3 for descriptions of components shown in the schematic.
Figure 13. Schematic
SBOU078 – June 2009 PGA2505EVM 15
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