VDD
GND
BO_AIO0
BO_AIO2
VCC
VSS
REFGND
REF
BO_AIO1
DAC_VIO
BO_MISO_LDAC_RSTSEL
BO_SCLK_A0
BO_MOSI_CLR
BO_CS0_A1
BO_SPI2C_USBBTC_RST
BO_SCL_USBBTC_RSTSEL_LDAC
BO_SDA_CLR_RSTSEL_LDAC
5
4
1
2
3
6
7
8
9
10
11
12
13
14
15
16
J2
5
4
1
2
3
6
7
8
9
10
11
12
13
14
15
16
J1
BO_LDAC
VIO
BO_AIO0
BO_AIO1
BO_AIO2
BO_AIO3
BO_AIO8
BO_AIO4
BO_AIO5
BO_AIO6
BO_AIO7
BO_AIO9
BO_AIO10
BO_AIO12
BO_AIO11
BO_AIO13
BO_AIO3
BO_AIO4
BO_AIO6
BO_AIO8
BO_AIO10
BO_AIO12
BO_AIO14
BO_AIO5
BO_AIO7
BO_AIO9
BO_AIO11
BO_AIO13
BO_AIO15
BO_AIO14
BO_AIO15
VCC
VSS
VDD
VIO
EXT_REF
REFGND
GND
AGND
NT2
Net-Tie
NT4
Net-Tie
NT6
Net-Tie
NT8
Net-Tie
NT1
Net-Tie
NT3
Net-Tie
NT5
Net-Tie
NT7
Net-Tie
AGND
GND
GND
DAC Breakout Interface
DAC Function Extender
1
2
NC
3
LM4040DIM3X-2.5/NOPB
U4
1
2
NC
3
LM4040DIM3-5.0/NOPB
U3
1.0k
R36
1.0k
R33
GND
GND
5V
EXT_VDD
25V
0.1uF
C10
25V
0.1uF
C9
2V5_VREF
5V0_VREF
1.0k
R30
GND
25V
0.1uF
C8
GND
VDD
L1
742792651
0
R31
1
2
3
J3
EXT_REF
REF
TP2
REF
L2
742792651
L3
742792651
25V
0.1uF
C4
REFGND
Reference Voltage Selection
5
4
1
2
3
6
7
8
9
10
11
12
13
14
15
16
J5
5
4
1
2
3
6
7
8
9
10
11
12
13
14
15
16
J4
REFGND
GND
0
R16
0
R46
0
R47
DAC_VIO
0
R34
1
2
3
J7
1
2
3
J6
AGND
REFGND must be shorted to
GND on the Breakout Board
This pinout has been chosen to
match that of ADC BoosterPack
designs
VDD can either be used directly
or through an optional voltage
divider
This option is provided in case a
10-pin BO board is needed. The
resistor will be DNP by default.
Only 16-pin and
32-pin DAC BO
boards are
supported. Other
configurations can
be used but with
custom
modifications
This interface is only on TOP
side for the DAC launch
Vehicle. For function externder
board, this needs to be on both
sides similar to LP connectors
Figure 4-2. BOOSTXL-DAC-PORT Schematic Page 2
Schematic, PCB Layout, and Bill of Materials
20
AFE539A4EVM
SLAU859 – JULY 2021
Copyright © 2021 Texas Instruments Incorporated