Texas Instruments DAC82002EVM, Руководство пользователя, Страница: 8 / 24

3.1.1.2 Buffer Customization
The DAC82002EVM has three operational amplifier circuits that can be configured using 0-Ω resistors. All three
circuits act as unity gain buffers with the default resistor placement. The following figure shows the 0-Ω resistors
are the only resistors that are populated on the DAC82002EVM by default.
3
2
6
7
4
V+
V-
OPA388IDR
U5A
3
2
6
7
4
V+
V-
OPA388IDR
U7A
V+
1nF
C11
1nF
C16
AGND
1nF
C17
AGND
V-
AGND
1nF
C21
1nF
C23
AGND
1nF
C24
AGND
VOUTA
VREF
V-
V+
1nF
C26
1nF
C28
AGND
1nF
C29
AGND
V+
1nF
C31
1nF
C33
AGND
1nF
C34
AGND
V-
AGND
AGND
AGND
AGND
AGND
AGND
LN-A
LN-B
HS-B
HS-A
TP3
LN-A
TP9
HS-A
TP21
HS-B
TP23
LN-B
A1
A2
A3
A7
A6
A5 C6
C2
C3
B2
B3
B6
100nF
C13
100nF
C20
100nF
C27
100nF
C30
100nF
C32
100nF
C35
0
R13
0
R15
0
R17
0
R18
0
R19
0
R20
0
R21
0
R24
0
R27
0
R30
0
R32
0
R16
VOUTA
VREF
0
R28
AGND
VOUTA
VREF
0
R12
0
R23
0
R29
0
R14
VOUTA
VREF
0
R25
AGND
VOUTB
VREF
0
R31
0
R39
0
R43
0
R37
VOUTB
VREF
0
R41
AGND
VOUTB
VREF
0
R33
0
R40
0
R44
0
R38
VOUTB
VREF
0
R42
3
2
1
8
4
V+
V-
OPA2328DGKR
U6A
5
6
7
OPA2328DGKR
U6B
Figure 3-2. Default Buffer Configuration
The three operational amplifiers can be replaced by the desired DIP-8 package. The inserted packages must
follow the same pin mapping as the default operational amplifiers.
Figure 3-3 shows the buffer DIP adapter
connections.
Figure 3-3. Buffer DIP Adapter Connections
Detailed Description www.ti.com
8 DAC82002EVM User's Guide SBAU401 – AUGUST 2022
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