LMP90100EB/NOPB National Semiconductor, LMP90100EB/NOPB Datasheet - Page 4

• Manufacturer Part Number: LMP90100EB/NOPB
• Description: EVAL BOARD FOR LMP90100
• Manufacturer: National Semiconductor

Specifications of LMP90100EB/NOPB

• Main Purpose: Interface, Analog Front End (AFE)
• Embedded: No
• Utilized Ic / Part: LMP90100
• Primary Attributes: 8 Programmable Output Data Rates Per Channel
• Secondary Attributes: SPI Interface
• Silicon Manufacturer: National
• Silicon Core Number: LMP90100
• Kit Application Type: Data Converter
• Application Sub Type: ADC
• Kit Contents: LMP90100 Evaluation Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.0. Example #1: Quick Start – DC Reading
The following procedures show a quick method to assemble the LMP90100EB and perform a quick DC voltage reading.
© 2009 National Semiconductor Corporation
B. LMP90100 EB Jumper Connections
C. Opening the Software - follow section “9.0. Installing the Software” to install the Sensor AFE software.
D. Connecting and Powering the Boards – these steps have to be done in this order.
1.
2.
3.
4.
1.
2.
3.
Connect a 5.0V power supply to J1 (VA_EXT) and GND (J2).
Connect a 5.0V power supply to J3 (VIO_EXT) and GND (J2).
Turn on the power supplies that are sourcing VA (J1) and VIO (J3).
Connect the LMP90100EB’s JP12 to SPIO-4 Board’s J6 (pins 1-16). See Figure 3.
Jumper
JP13
JP13
JP14
JP14
JP10
JP10
JP1
JP2
JP6
JP7
Figure 20 shows the schematic.
The jumpers not mentioned in this table have to be left unconnected for this exercise.
SPIO-4 board is properly setup out of the box (no assembly required).
Jumper Connections
Figure 3 – LMP90100EB-to-SPIO-4 Board Connection
Pins 9 & 10
Pins 1 & 2
Pins 1 & 2
Pins 1 & 2
Pins 1 & 2
Pins 3 & 4
Pins 1 & 2
Pins 3 & 4
Pins 1 & 2
Pins 3 & 4
Table 1 – Jumpers Connection
Page 4 of 30
with Sensor AFE Software User’s Guide
Source VA with an external power supply
Source VIO with an external power supply
Connect VA to LMP90100
Connect VIO to LMP90100
VREFP1 = 4.1V from LM4140
VREFN1 = Ground
Connect VREFP1 to LMP90100
Connect VREFN1 to LMP90100
VIN0 = 3/4 (VREF1)
VIN1 = 1/2 (VREF1)
lmp90100eb_usersguide_20101227_v23.doc
LMP90100 Evaluation Board
Purpose