Microchip Technology MCP3903, User Manual

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MCP3903 ADC Evaluation Board for 16-Bit MCUs User’s Guide
DS51994A-page 16
©
2011 Microchip Technology Inc.
A.2 SCHEMATIC - ANALOG
C
of
1
4
AB
C
D
E
Filename: Size Title
6
A.Hapenciuc
F
4 2
1
Date:
3/18/10
B.Popescu
3
1
AB
C
D
E
REV
F
2
Sheet
ADC_MPU_MEMORY.SCHDOC
Eng:
3
Drawn
by:
1
Date
Revision
Notes
M
4
GND GND
GND
GNDA
GNDA
GNDA
G G
GNDA
- +
GNDA
GNDA - +
+5V
3903_CS
3903_SDO
3903_SCK 3903_SDI
GNDA
3903_RESET
1
3903_CLKIN
2
GND
GNDA
GNDA
GNDA
C
GNDA
GNDA
- +
- + GNDA
GNDA GNDA
GNDA GNDA
GNDA GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
3903_DR
+3.3V
DNP
R94
DNP
R93
1
P5A
2
P5B
3
P4C
1
P3A
2
P3B
2
P2B
3
P2C
2
P1B
3
P1C
1
P0A
3
P0C
GNDA
GNDA
GNDA GNDA
+ -
1K
R97
1K
R98
GNDA
100
R56
100
R55
100
R69
100
R54
100
R68
3903_DR
RF3/U1TX
RF2/U1RX
3903_CS
3903_SCK 3903_SDO
3903_RESET
1
1
P4A
3
P5C
2
P4B
1
P2A
3
P3C
1
P1A
2
P0B
GNDA GNDA
1 3 5
2 4 6
JP2
HDR3X2
GNDA GNDA GNDA
1 3 5
2 4 6
JP7
HDR3X2
GNDA GNDA
GNDA
GNDA
-
1K R12 1K R11
+
1K R7
68NF
C8
GNDA
GNDA
GNDA
DNP
R10
GNDA
GNDA
GNDA
1K
R95
1K
R100
GNDA
GNDA
68NF C7
GNDA
DNP
R9
GNDA
100NF
C46
100NF C44
100
R63
3903_DR 3903_SDI
10k
R57
GNDA
GNDA
GNDA
GNDA
1 3 5
2 4 6
JP1
HDR3X2
1 3 5
2 4 6
JP8
HDR3X2 1 3 5
2 4 6
JP10
HDR3X2
1 3 5
2 4 6
JP9
HDR3X2
68NF
C10
DNP
R6
1K R5
68NF
C52
68NF
C51
DNP
R87
DNP
R84
68NF
C56
68NF
C55
DNP
R99
DNP
R96
68NF C9
DNP
R8
68NF C54 68NF C53
DNP
R62
DNP
R52
68NF C58
68NF C57
GNDA
JP6
18PF
C38
18PF C37
P2
2
P4
4
P6
6
P8
8
P10
10
P12
12
P14
14
P16
16
P15
15
P13
13
P11
11
P9
9
P7
7
P5
5
P3
3
P1
1
P8
HDR2X8-O/E
CH5+ CH4+
CH3+
GND
CH2+
CH0-
CH0+
1K R88
10
R60
1M
R40
ADC
CLOCK
SELECT
3/31/10
CH4- CH5-
GND
CH2- CH3-
CH1+
CH1-
DNP
R2
DNP
R1
DNP
R3 DNP
R92
1K R83 1K R85
DNP
R91
DNP
R104
DNP
R103
10
R59
ADC/MPU/MEMORY
3.579545MHZ
X2
1 3 5
2 4 6
JP5
HDR3X2 100
R43
DNP
R4 DNP
R90
DNP
R89
1K R86
DNP
R102
DNP
R101
REFIN+
14
CH4-
11
CH3-
8
CH1+
5
CH0+
2
REFIN-
15
DRA
18
OSC1
21
SCK
24
RESET
27
CH5-
12
CH5+
13
CH2+
6
CH2-
7
CH3+
9
CH4+
10
AVDD
1
CH0-
3
CH1-
4
DGND
17
AGND
16
DRB
19
DRC
20
OSC2
22
CS
23
SDO
25
SDI
26
DVDD
28
U9
M
CP3903_SO28
100NF C45
M
CP3903
Eval
Board
for
16-bit
MCU
Initial
Release
Build
NET00083 NET00088 NET00093
+3.3V