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1
D
DACDa
R4
W2
0 ohm
DACDb
C4
NI
DACAa
REFP
C
R1
C1
W4
0 ohm
4.7uF
DACAb
C5
NI
J1
19 20
17 18
DACCb
15 16
DACCa
13 14
DACBb
11 12
DACBa
9
10
DACAb
7
8
DACAa
5
6
DACDb
3
4
DACDa
1
2
DACBa
B
R3
W1
0 ohm
DACBb
C3
NI
DACCa
R2
W3
0 ohm
DACCb
C2
NI
A
1
2
3
R8
R20
REFD
10K
10K
VSS
R15
U3A
10K
R16
2
VSS
VCC
1
10K
3
C11
OPA4277UA
C14
0.1µF
VCC
0.1µF
SW4
4
3
U3D
12
5
2
14
13
6
1
OPA4277UA
R7
R19
REFA
10K
R14
10K
10K
U3B
R13
6
7
10K
5
OPA4277UA
SW3
4
3
U3C
9
5
2
8
10
6
1
OPA4277UA
R6
R18
REFB
10K
10K
VSS
R12
10K
U2A
R11
2
VSS
VCC
1
10K
3
OPA4227UA
C10
C12
0.1µF
VCC
0.1µF
SW2
4
3
12
U2D
5
2
14
13
6
1
OPA4227UA
R5
R17
REFC
R9
10K
10K
10K
R10
U2B
6
7
10K
5
OPA4227UA
SW1
4
3
U2C
9
5
2
8
10
6
1
OPA4227UA
2
3
4
+VDAC
REFD
REFB
REFC
REFA
C15
C17
0.1µF
0.01µF
U4
25
RfbD
27
IoutD
21
LDAC
4
9
RfbA
CLK
2
8
IoutA
/CS
10
SDI
11
RfbB
20
SDO
13
IoutB
6
/RS
16
5
IoutC
MSB
18
RfbC
DAC8803D or DAC8814D
R24
0 ohm
4
5
6
Revision History
REV
ECN Number
A
Initial Release
J2B
MSB
1
2
CLKX
3
4
R22
R23
5
6
/CS
10K
10K
7
8
9
10
SDI
11 12
13 14
15 16
/LDAC
17 18
/RS
19 20
/LDAC
Bottom Side Connector
CLKX
/CS
SDI
SDO
/RS
MSB
J2T
MSB
1
2
CLKX
3
4
5
6
/CS
7
8
9
10
SDO
11 12
13 14
15 16
/LDAC
17 18
/RS
19 20
Top Side Connector
ti
12500 TI Boulevard. Dallas, Texas 75243
Title:
DAC8803_14 EVM
Engineer:
T. Hendrick
DOCUMENTCONTROL #
6478165
Drawn By:
T. Hendrick
FILE:
DATE:
SIZE:
23-May-2006
SHEET:
DAC8803_14_SH1.Sch
5
6
Approved
TH
D
C
B
A
REV:
A
1
OF:
2
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