Texas Instruments LMP90100 - Page 23

March 2009 SNAU028A 23
Figure 21 – Jumper Settings for the Thermocouple and LM94022 Example
Jumpers
Pin
Purpose
JP1: VA_EXT
P2-P3
Source VA with the 5.0V from the SPIO-4 board.
JP2: VIO_EXT
P2-P3
Source VIO with the 5.0V from the SPIO-4 board.
JP4
P2-P3
Get 5.0V from the SPIO-4 board
JP6
P1-P2
Connect VA supply to the LMP90100
JP7
P1-P2
Connect VIO supply to the LMP90100
JP5: TC_JMP
P1-P2
Connect TCN to VIN3
JP5: TC_JMP
P3-P4
Connect TCP to VIN4
JP3: LM94022_JMP
P1-P2
Connect the output of LM94022 to VIN5
JP13: VREF_JMP1
P3-P4
VREFP1 = 4.1V from U4 (LM4140)
JP13: VREF_JMP1
P9-P10
VREFN1 = ground
JP14: VREF_JMP2
P1-P2
Connect VREFP1 source to the LMP90100
JP14: VREF_JMP2
P3-P4
Connect VREFN1 source to the LMP90100
Table 4 – LMP90100EB Jumpers for the RTD Application
D. Installing/Opening the Software – skip this step if it’s already done. If not, follow section 9.0
to install and open the LMP90100 Sensor AFE software.
E. Connecting and Powering the Boards
1. Connect the LMP90100EB to the SPIO-4 board as seen in Figure 4.