EVM Power-Supply Inputs
4
EVM Power-Supply Inputs
J3 is the power-supply input connector.
lists the configuration details for J3.
Table 3. J3: Power-Supply Interface Header
Pin Number
Pin Name
Function
Required
J3.3
+5VA
5-V analog supply
Yes
J3.5
GND
Analog and digital ground
Yes
(single ground board)
J3.6
GND
Analog and digital ground
Yes
(single ground board)
J3.7
+ 1.8VD
1.8-V digital supply
No
J3.9
+3.3VD
3.3-V digital supply
Yes
J3.10
+5VD
5-V digital supply
Optional
P3.1-2, P3.4, and P3.7-8
Unused
Unused
No
4.1
Analog Power Options
The ADS8339EVM board functions with a 5-V supply provided at J3.3 by the MMB0 motherboard,
powering the onboard reference, op amps, and the analog supply of the ADS8339.
4.2
Digital Power Options
The ADS8339EVM connects the digital power supply of the ADS8339 to +3.3VD (J3.10) to match the 3.3-
V logic level of the MMB0 motherboard.
4.3
Analog and Digital Grounds
The EVM only has one ground plane for all analog and digital supplies; pins J3.5 and J3.6 are tied
together to this ground plane. Therefore, connect both supply grounds to pins J3.5 and J3.6 so they share
the same ground.
7
SBAU233A – October 2014 – Revised November 2015
ADS8339EVM-PDK
Copyright © 2014–2015, Texas Instruments Incorporated
