Table of Contents
Advertisement
Quick Links
This User Guide details evaluation module (EVM) operation of the factory installed isolated ISO3082
transceiver. The ISO3082 EVM may be reconfigured by a user for use with the ISO15, ISO35, ISO3080,
and ISO3086 or ISO3088 isolators. Contact a field representative or TI if a factory installed version of one
these devices is desired.
This Guide explains the user configurable I/O loads for the half-duplex and full-duplex EVM configurations,
and presents a typical lab setup and typical output waveform.
Please note that while these devices provide galvanic isolation of up to 4000 V,
this EVM cannot be used for isolation voltage testing. It is designed for the
evaluation of device operating parameters only and may be damaged if high
voltage (> 5.5 V) is applied anywhere in the circuit.
...................................................................................................................
1
1.1
1.2
1.3
1.4
1.5
2
2.1
1
2
3
4
5
6
7
1
Isolated RS-485 EVM Connections
2
3
SLOU235 - July 2008
Submit Documentation Feedback
.............................................................................................................
........................................................................................
..................................................................................................
.............................................................................................................
List of Figures
....................................................................................
....................................................................................
...................................................................................
...........................................................................
.................................................................................................
List of Tables
.......................................................................................
.............................................................................................
.............................................................................................
Isolated RS-485 EVM
CAUTION
Contents
.........................................................
.........................................................
User's Guide
SLOU235 - July 2008
........................................
....................................
....................................
Isolated RS-485 EVM
2
2
2
3
6
7
9
9
2
2
4
6
8
10
10
5
7
9
1
Advertisement
Table of Contents
Related Manuals for Texas Instruments ISO15
Summary of Contents for Texas Instruments ISO15
-
Page 1: Table Of Contents
This User Guide details evaluation module (EVM) operation of the factory installed isolated ISO3082 transceiver. The ISO3082 EVM may be reconfigured by a user for use with the ISO15, ISO35, ISO3080, and ISO3086 or ISO3088 isolators. Contact a field representative or TI if a factory installed version of one these devices is desired. -
Page 2: Introduction
Introduction Overview The ISO15, ISO35, ISO3080, ISO3082, ISO3086 and ISO3088 isolated RS-485 transceivers have a logic input and output buffer separated by a silicon oxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices block high voltage, isolate grounds, and prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. -
Page 3: The Isolated Rs-485 Evm
Introduction www.ti.com The Isolated RS-485 EVM This multi-functional EVM is designed with the signal paths for the half-duplex or full-duplex operation displayed in Figure Figure 2 Figure 3 for the evaluation of any of the isolated RS-485 transceivers. SLOU235 – July 2008 Isolated RS-485 EVM Submit Documentation Feedback... -
Page 4: The Isolated Rs-485 Evm Schematic
Introduction www.ti.com Figure 3. The Isolated RS-485 EVM Schematic Isolated RS-485 EVM SLOU235 – July 2008 Submit Documentation Feedback... - Page 5 Introduction www.ti.com Table 1. Isolated RS-485 EVM Connections Connection Label Description SMA connector to the receiver output pin SMA connector to the receiver enable input pin SMA connector to the driver enable input pin SMA connector to the driver input pin NC/A SMA connector to the Full-Duplex A bus pin SMA connector to the Half or Full-Duplex B bus pin...
-
Page 6: The Isolated Rs-485 Evm Half-Duplex Configuration
Introduction www.ti.com The Isolated RS-485 EVM Half-Duplex Configuration The EVM Half-Duplex configuration has SMA connector J1 set up as the receiver output connection to R, the receiver output pin 3. R1, a 2.2 kΩ TTL load resistor may be connected by jumping the pins of JMP16 together. -
Page 7: The Isolated Rs-485 Evm Full-Duplex Configuration
Introduction www.ti.com Table 2. Half-Duplex EVM Connections Connection Label Description SMA connector to the receiver output pin SMA connector to the receiver enable input pin SMA connector to the driver enable input pin SMA connector to the driver input pin SMA connector to the Half-Duplex B bus pin SMA connector to the Half-Duplex A bus pin 3-pin jumper –... -
Page 8: The Full-Duplex Operation Schematic
Introduction www.ti.com Figure 5. The Full-Duplex Operation Schematic Isolated RS-485 EVM SLOU235 – July 2008 Submit Documentation Feedback... -
Page 9: Evm Setup And Operation
EVM Setup and Operation www.ti.com Table 3. Full-Duplex EVM Connections Connection Label Description SMA connector to the receiver output pin SMA connector to the receiver enable input pin SMA connector to the driver enable input pin SMA connector to the driver input pin NC/A SMA connector to the Full-Duplex receiver input bus pin A SMA connector to the Full-Duplex receiver input bus pin B... -
Page 10: Basic Iso3082 Half-Duplex Evm Operation
EVM Setup and Operation www.ti.com Power Supply Power Supply GND1 GND2 NC/A Tektronix Tektronix HFS 9009 784D DRIVER JMP19 Pattern Scope ENABLE INPUT A /Z Pins 1 & 2 Generator Jumped DRIVER INPUT NC/Y to V Figure 6. Basic ISO3082 Half-Duplex EVM Operation Figure 6 J4 input to the EVM is a 200 kbps PRBS NRZ data displayed on channel 1 in Figure... -
Page 11: Evaluation Board/Kit Important Notice
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. -
Page 12: 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 13: Texas Instruments
Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments ISO485EVM...
Need help?
Do you have a question about the ISO15 and is the answer not in the manual?
Questions and answers