1
2
3
4
5
6
A
B
C
D
6
5
4
3
2
1
D
C
B
A
ti
12500 TI Boulevard. Dallas, Texas 75243
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DATE:
REV:
13-Jun-2003
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Engineer:
Revision History
REV
ECN Number
Approved
DAC8534 RevA.Sch
DOCUMENTCONTROL #
C1
0.1µF
C2
0.1µF
+5VA
SCLK
R6
10K
VSS
2
3
6
4
7
1
5
U2
Op Amp
VCC
C10
1µF
C9
1µF
R12
10K
C12
1nF
W5
R8
0
GND
4
TRIM
5
NC
1
NC
7
NC
8
TEMP
3
OUT
6
V+
2
U3
REF02AU(8)
C11
10µF
C3
0.1µF
VCC
1
3
TP1
TP2
EXTERNAL
REFERENCE
1
2
3
R11
100K
R10
20K
1
2
3
R9
20K
VCC
VDD
VDD
W4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
J4
OUTPUT HEADER
VrefH
FSX
C6
10µF
C5
10µF
DAC8534_74 EVM
A
J. PARGUIAN
W7
W10
W8
VSS
+REFin
+REFin
W9
Tantalum
1
SDI
CLKX
DX
CLKR
FSR
DR
VoutB
2
IO_V/DVDD
12
A3/LDAC
16
A1
14
GND
6
VrefH
3
VrefL
5
VoutA
1
A2/EN
15
A0
13
VoutD
8
SDA/Din
11
SCL/SCLK
10
LDAC/SYNC
9
AVDD
4
VoutC
7
U1
DAC7574/8534/8574
VDD
R15 440/0
R16 440/0
R5
3K
R7
3K
R1
10K
R2
10K
R3
10K
R4
10K
-REFin
W2
OUT_A1
OUT_C1
OUT_B1
OUT_D1
OUT_A2
OUT_B2
OUT_C2
OUT_D2
OUT_A
OUT_B
OUT_C
OUT_D
2
3
1
8
4
U8A
OPA2227UA
5
6
7
U8B
OPA2227UA
R17
0
TP5
-REFin
VrefH
R14
10K
Vr
ef
H
VCC
C7
0.1µF
TP3
VOUT
U2_+IN
U2_-IN
U2_OUT
VrefL
1
2
3
4
5
6
7
8
9
10
11 12
13 14
15 16
20
17
19
18
J2
Serial Header
W6
VrefL
TP4
R23
NI
R22
NI
R21
NI
R20
NI
R24
NI
C13
NI
C8
NI
R19
NI
R18
NI
VCC = +15V Analog
VDD = +2.7V to +5.0V Digital
VSS = 0V to -15V Analog
TP6
+Vin
TP7
-Vin
1
2
3
J1
1
2
3
J5
+5VA
NOTE: Voltage range of -REFin input should not exceed
0 - VrefH.
VCC
1
2
3
4
5
6
7
8
9
10
J6
VSS
+5VA
-5VA
VDD
+3.3VD+1.8VD
+3.3VA
GPIO0
GPIO1
SCL
SDA
R25
0
R26
0
GPIO2
GPIO3
GPIO0
GPIO1
GPIO2
GPIO3
R27
0
R28
0
GPIO4
GPIO5
GPIO4
GPIO5
R31
0
R32
0
R33
0
R29
0
R30
0
FSX
GPIO0
(LDAC)
(LDAC)
(SYNC)
(A3)
(EN)
(A2)
(A1)
(A0)
(LDAC)
(A3)
(EN)
(A2)
(A1)
(A0)
R34
0
R35
0
SCLK
SDI
R36
0
R37
0
DX
CLKX
R38
0
R39
0
W1
+3.3VA
AVDD
W11
W12
W13
6447711
R13
100
W15
W3