Texas Instruments ADS9817EVM-PDK, User Manual, Page: 6 / 29

2.2 Input SMA Connections
Each input is connected to two SMA connectors. The positive input connector (for example, AIN1P) is connected
to a ±5-V signal. The negative input connector (for example, AIN1M) is normally connected to GND with a
jumper connection (for example, J19). Alternatively, the negative input connector can be used to measure the
local sensors ground. The negative input has a range of ±0.3 V.
Figure 2-2 shows the input connections for a
digital interface.
GND
AIN1P
AIN1M
0
R4
50V
10pF
C9
DNP
0
R8
GND
10k
R6
DNP
1
2
J19
1
2 3 4 5
J1
GND
1
2 3 4 5
J2
Figure 2-2. Input SMA Connections Digital Interface
Analog Interface www.ti.com
6 ADS9817EVM-PDK Evaluation Module SBAU416 – NOVEMBER 2022
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