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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.
© 2011 Texas Instruments Incorporated
with Sensor AFE Software User's Guide
Page 1 of 17
lmp91050sdeval_usersguide_v7.doc
LMP91050 Evaluation Board
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Page 1: Table Of Contents
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. -
Page 2: Equipment
2.1. Connection Diagram Figure 1 shows the connection between the LMP91050 Evaluation Board (LMP91050SDEVAL), SPIO-4 board, and a personal computer with the LMP91050 Sensor AFE software. LMP91050 can be powered using external power supplies or from the SPIO-4 board. Figure 1 – Connection Diagram ©... -
Page 3: Board Assembly
LMP91050 Evaluation Board with Sensor AFE Software User’s Guide 2.2. Board Assembly Figure 2 – LMP91050 Evaluation Board Assembly © 2011 Texas Instruments Incorporated Page 3 of 17 lmp91050sdeval_usersguide_v7.doc... -
Page 4: Quick Start
The following procedures show a quick method to assemble the LMP91050SDEVAL and perform a quick voltage reading. LMP91050 EVB Jumper Connections 1. The jumpers for this example application can be seen in Figure 3 and Table 1 2. The SPIO-4 board is properly setup out of the box (no assembly required). - Page 5 IN to CMOUT for easy evaluation. Table 1 - Jumpers for Voltage Measurement B. Installing/Opening the Software - follow section 6.0 to install and open the LMP91050 Sensor AFE software. C. Connecting and Powering the Boards – these steps have to be done in this order.
- Page 6 Once connection between the boards and PC is established, you can use the software to communicate to and capture data from the LMP91050. Drag cursor over window icons to get an icon description. Some items of interest are shown in Figure 5.
- Page 7 ADC Vref: ADC reference voltage. User should input value measured at VREF_ADC test point. Value used to calculate displayed Output Voltage. h. Vout Dark: This value corresponds to the user measured value at the LMP91050 output (OUT) when input is shorted (IN = CMOUT). Tool will use this value to estimate LMP91050 input voltage (IN - CMOUT) on subsequent measurements.
- Page 8 LMP91050 Evaluation Board with Sensor AFE Software User’s Guide Figure 6 - Recommended LMP91050 Configuration for a voltage Reading 1. Step 1: Select a Sensor – Sensor Database window opens. See Figure 7. Step 1: Click sensor type (Thermopile) and the sensors will show in the bottom table. Step 2: Click sensor and then click “Select”...
- Page 9 Device Performance based on device configuration and user input device Supply and IC Temp .This tab also displays the Measured System Performance if you’ve connected a board and ran the LMP91050. © 2011 Texas Instruments Incorporated Page 9 of 17...
- Page 10 CMOUT_DUT. If J2 is shorted, IN_DUT = CMOUT_DUT, output voltage should be about 1V. Note: Board is provided with jumper J2 open. Use provided jumper to short IN to CMOUT for easy evaluation. Figure 8 - Results for DC Reading © 2011 Texas Instruments Incorporated Page 10 of 17 lmp91050sdeval_usersguide_v7.doc...
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Page 11: Powering The Lmp91050Sdeval
LMP91050. Without the SPIO-4 board, the Sensor AFE software for the LMP91050 cannot be used to capture and analyze data from the LMP91050SDEVAL. If the SPIO-4 board is not available but LMP91050 evaluation is desirable, then connect your own SPI signals to J1 of the LMP91050SDEVAL as seen below. Reference the LMP91050 datasheet for appropriate SPI timing diagrams. -
Page 12: Installing The Lmp91050 Sensor Afe Software
See the provided Installation Guide For SensorAFE Drivers.pdf. 3. Installing the Software a. See the provided Installation Guide for LMP91050 SensorAFE Software.pdf i. Note: If you run the software without the boards, you’ll get an error message. Ignore that error message and click “Ok” to continue. -
Page 13: Schematic
LMP91050 Evaluation Board with Sensor AFE Software User’s Guide 7.0. Schematic Note 1) Thermopile sensor U4 is not included. Figure 10 - LMP91050SDEVAL Schematic © 2011 Texas Instruments Incorporated Page 13 of 17 lmp91050sdeval_usersguide_v7.doc... -
Page 14: Layout
LMP91050 Evaluation Board with Sensor AFE Software User’s Guide 8.0. Layout Figure 11 - Layout © 2011 Texas Instruments Incorporated Page 14 of 17 lmp91050sdeval_usersguide_v7.doc... -
Page 15: Bom
230 mil above insulator JP1, JP2 Header, TH, 100mil, 1x3, Gold Samtec Inc. TSW-103-07-G-S plated, 230 mil above insulator L1, L2 Ferrite, Chip, 200mA, .80 ohm, Wurth BLM21BD272SN1L Elektronik eiSos © 2011 Texas Instruments Incorporated Page 15 of 17 lmp91050sdeval_usersguide_v7.doc... - Page 16 24C02C/SN Osc 10.000Mhz 5.0V Full Size ECS Inc ECS-100AX-100 Precision Micropower Low Dropout Texas LM4140ACM-4.1/NOPB Voltage Reference, 8-pin Narrow Instruments SOIC Oscillator Socket Aries 1107741 Electronics Table 2 - BOM © 2011 Texas Instruments Incorporated Page 16 of 17 lmp91050sdeval_usersguide_v7.doc...
- Page 17 Sensor AFE Software User’s Guide Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
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Page 18: Important Notice
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. - Page 19 Мы молодая и активно развивающаяся компания в области поставок электронных компонентов. Мы поставляем электронные компоненты отечественного и импортного производства напрямую от производителей и с крупнейших складов мира. Благодаря сотрудничеству с мировыми поставщиками мы осуществляем комплексные и плановые поставки широчайшего спектра электронных компонентов.
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