Texas Instruments LMP91000EVM, Инструкция по эксплуатации и руководство пользователя

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User’s Guide
SNAU121- June 2012
LMP91000EVM User’s Guide
SNAU121-April 2012 LMP91000 EVM User’s Guide 1
CONTENTS
1 INTRODUCTION ....................................................................................................... 1
2 SETUP ....................................................................................................................... 1
3 BOARD LAYOUT ..................................................................................................... 5
4 SCHEMATIC ............................................................................................................. 7
LIST OF FIGURES
Figure 1: Gas sensor’s footprint .......................................................................................... 2
Figure 2: 2-WIRE Jumper Settings ..................................................................................... 2
Figure 3: J_MENB Jumper Settings ................................................................................... 3
Figure 4: Connection of the LMP91000EVM to SPIO4 board ............................................ 3
Figure 5: Top Layer Routing ............................................................................................... 5
Figure 6: Bottom Layer Routing .......................................................................................... 6
Figure 7: LMP91000EVM Schematic .................................................................................. 7
LIST OF TABLES
Table 1: Device and Package Configurations .................................................................... 1
Table 2: Recommended p-FETs for short circuiting RE and WE when LMP91000 is OFF 2
Table 2: LMP91000EVM Bill of Materials ........................................................................... 8
1. Introduction
The Texas Instruments LMP91000EVM evaluation module (EVM) helps designers evaluate the operation and
performance of the LMP91000 Sensor Analog Front End for Electrochemical sensor. The LMP91000EVM is
part of the Sensor AFE eval platform
The EVM contains one LMP91000, (See Table 1).
Table 1: Device and Package Configurations
DEVICE
IC
PACKAGE
U1 LMP91000SD LLP-14
The LMP91000EVM is provided with a 16 bit ADC (ADC161S626) in order to capture the output of the LMP91000.
The LMP91000EVM is not provided with any gas sensor. It supports 3-lead electrochemical cells and 2-lead
galvanic cell in potentiostat configuration.
2. Setup
This section describes the jumpers and connectors on the EVM as well and how to properly connect, set up
and use the LMP91000EVM in the Sensor AFE eval platform.