Datasheet
Pin 1 2
3 4
6
8
5
7
9 10
12
14
11
13
15 16
18
20
17
19
Pin 1
2
3 4
6
8
5
7
9 10
12
14
11
13
15 16
18
20
17
19
Pin 1
2 4 6 8
10
3 5 7 9
J-ANALOG.1
J-DIGITAL.1
J-POWER.1
ADS8028EVM Hardware Details
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3 ADS8028EVM Hardware Details
Figure 3 shows the location of headers J-ANALOG, J-DIGITAL, and J-POWER and their assigned pin
numbers. The notation J-NAME.<#> is used in this user's guide for identifying header pins. For example,
J-ANALOG.1 refers to pin 1 on the J-ANALOG header.
Figure 3. Headers and Pin Numbers
Table 4 provides a quick summary of the connections required for operation of the ADS8028. The purpose
of the MMB0 motherboard is to provide power and SPI communication to the ADS8028EVM. Analog
inputs of interest must be applied to the ADS8028EVM by the user. For a complete list of connections and
pins, refer to the ADS8028EVM schematic in Section 5.2.
Table 4. Critical Connections
Function Header and Pin Pin Name Description
CS J-DIGITAL.7 FSX Chip select; active low logic input
SCLK J-DIGITAL.3 CLKX SCLK
SPI DIN J-DIGITAL.11 DX Data In
DOUT J-DIGITAL.13 DR Data Out
TM_BUSY J-DIGITAL.15 INT Busy output; high during temperature conversion
1.8V J-POWER.7 +1.8VD Digital interface supply (BVDD)
(1)
3.3V J-POWER.9 +3.3VD Digital interface supply (BVDD)
(1)
5.0V J-POWER.10 +5VD Digital interface supply (BVDD)
(1)
Power
5.0V (AVDD) J-POWER.3 +5VA Analog operation supply (AVDD)
J-POWER.5 and DGND and
GND Digital and Analog supply grounds
(2)
J-POWER.6 AGND
Channels 0 and 1 J-ANALOG.1-4 — Analog Inputs (Buffered)
(3)
Analog inputs
Channels 2 to 7 J-ANALOG.5-16 — Analog Inputs
(3)
(1)
Only one digital supply connection (BVDD) is required when evaluating the ADS8028EVM as a stand-alone board. Check that
the corresponding jumper (J-1, J-3, or J-5) is correctly selected to power the ADS8028 digital interface.
(2)
AGND and DGND are shorted on the ADS8028EVM.
(3)
All ADS8028 analog inputs are single-ended and connect between the even and odd pins on the J-ANALOG header. All odd
pins on J-ANALOG are connected to AGND.
6
ADS8028EVM-PDK SBAU198–April 2012
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