Texas Instruments ADS1278-SP, User Manual, Page: 20 / 32

ADS1278EVM-CVAL Hardware Details
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20 SBAU324 – September 2018
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ADS1278EVM-CVAL Evaluation Module User's Guide
5.5.3.2 DOUTx Header, J2
All the data output signals (DOUT1 to DOUT8) can be monitored on J2 . Table 10 illustrates the pinout for
J2 .
(1)
Pin 1 is top right-hand corner, located next to reference designator.
Table 10. J2: DOUTx Header
Data Out Line Designator Data Out Line
DOUT1 1
(1)
2 DOUT2
DOUT3 3 4 DOUT4
DOUT5 5 6 DOUT6
DOUT7 7 8 DOUT8
5.6 Power Supply Header, J5
J5 is the power-supply input connector. Table 11 lists the configuration details for J5 . Supplies of 1.8 V,
3.3 V, and 5.0 V are required for operation of the EVM. When using the EVM with the MMB0, these
voltages are generated by the MMB0 and no external supplies are required. For operation as a stand-
alone EVM, the power supplies should be connected as shown below.
(1)
Pin 1 is bottom left-hand corner, located next to reference designator.
Table 11. J5 Configuration: Power-Supply Input
Function Pin Name Designator Pin Name Function
Not used for this design Not used 1
(1)
2 Not used Not used for this design
+5-V analog supply +5VA 3 4 Not used Not used for this design
Digital ground DGND 5 6 AGND Analog ground input
1.8-V digital supply +1.8VD 7 8 Not used Not used for this design
3.3-V digital supply +3.3VD 9 10 N/A Do not use
NOTE: For monitoring the current from each supply, CM1, CM2, and CM3 (0- Ω resistors) can be
removed and replaced with sense resistors or ammeters.
The ADS1278-SP digital supplies are connected as follows:
• IOVDD supply is connected to the +1.8VD pin of the J3 header.
• DVDD supply is connected to the +3.3VD pin of the J3 header.
The ADS1278-SP analog supply, AVDD, is connected to the +5VA pin of the J5 header.