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LMP91050 Evaluation Board
with Sensor AFE Software User’s Guide
© 2011 Texas Instruments Incorporated Page 1 of 17 lmp91050sdeval_usersguide_v7.doc
User’s Guide for the LMP91050 Evaluation Board with Sensor
AFE Software
Table of Contents
1.0. Introduction ........................................................................................................................................ 1
2.0. Equipment .......................................................................................................................................... 2
2.1. Connection Diagram .......................................................................................................................... 2
2.2. Board Assembly ................................................................................................................................. 3
3.0. Quick Start ......................................................................................................................................... 4
4.0. Powering the LMP91050SDEVAL .................................................................................................... 11
5.0. Evaluating the LMP91050 without the SPIO-4 Board. ..................................................................... 11
6.0. Installing the LMP91050 Sensor AFE Software ................................................................................ 12
7.0. Schematic ........................................................................................................................................... 13
8.0. Layout ................................................................................................................................................ 14
9.0. BOM .................................................................................................................................................. 15
1.0. Introduction
The LMP91050 Design Kit (consisting of the LMP91050 Evaluation Board, the SPIO-4 Digital
Controller Board, the Sensor AFE software, and this user’s guide) is designed to ease evaluation and
design-in of Texas Instrument’s LMP91050 Configurable AFE for Nondispersive Infrared (NDIR).
Data capturing and evaluations are simplified by connecting the SPIO-4 Digital Controller Board (SPIO-4
board) to a PC via USB and running the Sensor AFE software. The data capture board will generate the
SPI signals to communicate to and capture data from the LMP91050. The user will also have the option
to evaluate the LMP91050 without using the SPIO-4 board or the Sensor AFE software.
The on board data converter will digitize the LMP91050’s analog output, and the software will display
these results in time domain and histogram. The software also allows customers to write to and read from
registers, to configure the device’s gain, output offset, and common mode voltage, and most importantly,
to configure and learn about the LMP91050.
This document describes the connection between the boards and PC, and provides a quick start for
voltage measurements. This document also describes how to evaluate the LMP91050 with and without
the SPIO-4 board and provides the schematic, board layout, and BOM.
Verzeichnis
- ・ Blockdiagramm on Seite 13
- ・ Anwendungsbereich on Seite 18
