User's Guide
SNIU026A – March 2015 – Revised December 2015
TDC1000-GASEVM and TDC1000-BSTEVM Kit User’s
Guide
1
General Overview
This user's guide details the use of the TDC10000-GASEVM, which is comprised of two boards. The first
board is the main TDC1000-GASEVM, which includes an on-board TDC1000 (ultrasonic analog-front-
end), TDC7200 (time-to-digital converter), and MSP430 microcontroller. The purpose of this board is to
excite the transducers, receive the returned echo, generate the STOP pulses, and digitize the time-of-flight
to the MSP430 for further processing. This main board connects with a separate TDC1000-BSTEVM
board (referred to as HV board for the remainder of this document). The purpose of the HV board is to
boost the transmit pulses from 3.7V-to-30V to get a better received echo for applications where a higher
range is necessary or when the ultrasonic medium is a gas or is exposed to vibration.
2
TDC1000-GASEVM vs. TDC1000-TDC72000EVM
The TDC1000-GASEVM is compatible with the Firmware and GUI of the TDC1000-TDC72000EVM since
all the components are the same. However, the TDC1000-GASEVM has the following component
changes to facilitate rapid evaluation for water/gas flow applications.
1. The TDC1000-GASEVM has been designed for Gas Flow applications. The passive components that
determine the first order filter of the Rx signal path have been tuned for frequencies between 58 kHz to
300 KHz.
2. The resistors connecting the TX2/RX1 and TX1/RX2 channel have been removed to enable the
TDC1000-GASEVM to be used with the TDC1000-BSTEVM. When resistors have been removed, the
transmitting pulses increase from 3.7 V to 30 V.
3
EVM Package Contents
The TDC1000-GASEVM evaluation kit contains the following:
•
On board TDC1000 (ultrasonic analog-front-end) and TDC7200 (time-to-digital converter)
•
On board MPS430 microcontroller
•
USB Mini-B to USB-A plug cable
The TDC1000-BSTEVM kit contains the following:
•
On board LM2733XMF boost converter
•
On board UCC27531 Gate drivers
•
Connectors to plug into the TDC1000-GASEVM or TDC1000-TDC7200EVM
4
Software
The firmware and GUI is the same as the TDC1000-TDC7200 EVM. For detail information about the GUI
and troubleshooting the software, see the TDC100-TDC7200EVM User's Guide
.
5
SNIU026A – March 2015 – Revised December 2015
TDC1000-GASEVM and TDC1000-BSTEVM Kit User’s Guide
Copyright © 2015, Texas Instruments Incorporated