Texas Instruments ISO154 EVM Series Скачать руководство пользователя страница 6 | Manualshive

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Texas Instruments ISO154 EVM Series Скачать руководство пользователя страница 6

J1

J2

U2

J3A/J4A

J5A/J6A

J3B/J4B

J5B/J6B

J7A/J8A

J9A/J10A

J7B/J8B

J9B/J10B

Power Supply

VCC1

Power Supply

VCC2

I C Transmitter

2

or

Oscilloscope

I C Transmitter

2

U1

Oscilloscope

or

EVM Setup and Operation

2

EVM Setup and Operation

This section includes the setup and operation of the EVM for parameter performance evaluation. Typical
input and output waveforms are included.

2.1

Overview

The basic setup in

has the two power supplies required to evaluate isolator performance with any

combination of 3.3 V or 5 V on either side. If both sides are evaluated at the same supply voltage, only
one power supply is required and can be used to power both sides of the EVM.

CAUTION

Note that this EVM is for operating parameter performance evaluation only and
not designed for isolation voltage testing. Any voltage applied above the 5.5-V
maximum recommended operating voltage of the isolators may damage the
EVM.

Please note that if the ISO1541 is used, providing an input signal on the SCL2 pin does not yield any
output on SCL1, SCL1 remains pulled up to VCC1.

Figure 4. Basic EVM Operation

6

SLLU166 – June 2012

ISO154xEVM Low-Power Bidirectional I

2

C Isolators Evaluation Module

Submit Documentation Feedback

Copyright © 2012, Texas Instruments Incorporated

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Содержание ISO154 EVM Series

Страница 1: ...xEVM Layout 10 List of Figures 1 ISO1540 and ISO1541 Pinout 3 2 ISO154xEVM Top Photograph 3 3 ISO154xEVM Schematic 4 4 Basic EVM Operation 6 5 Typical Waveforms Inputs on Side 1 7 6 Typical Waveforms...

Страница 2: ...tive 1 1 Overview The ISO154x devices are low power bidirectional isolators that are compatible with I2 C interfaces The logic input and output buffers on these devices are separated by TI s Capacitiv...

Страница 3: ...ed in place of U1 and U2 respectively However this EVM can be configured for use with two ISO1540s or two ISO1541s Figure 2 ISO154xEVM Top Photograph An input or output pin can be tied either to suppl...

Страница 4: ...ematic diagram for this EVM is presented in Figure 3 Figure 3 ISO154xEVM Schematic 4 SLLU166 June 2012 ISO154xEVM Low Power Bidirectional I2 C Isolators Evaluation Module Submit Documentation Feedback...

Страница 5: ...L1 GND1 for U1 J3B J4B 4 pin jumper to VCC2 SDA2 GND2 for U1 J5B J6B 4 pin jumper to VCC2 SCL2 GND2 for U1 J7A J8A 4 pin jumper to VCC1 SDA1 GND1 for U2 J9A J10A 4 pin jumper to VCC1 SCL1 GND1 for U2...

Страница 6: ...on either side If both sides are evaluated at the same supply voltage only one power supply is required and can be used to power both sides of the EVM CAUTION Note that this EVM is for operating para...

Страница 7: ...tep in the rising edge of the input waveforms at SDA1 and SCL1 indicative of the tLOOP parameter of the device and demonstrating the effect of the difference in the low levels for the side 1 output an...

Страница 8: ...gh output low level on side 1 designed to prevent a latch up state Note the offset of the output low level voltage from ground on SDA1 and SCL1 Figure 6 Typical Waveforms Inputs on Side 2 In addition...

Страница 9: ...39 TP38 grouped as single row 4 pin jumper 4 J6A on EVM silkscreen is TP27 TP6 TP20 TP24 grouped as single row 4 pin jumper 5 J3B on EVM silkscreen is TP35 TP66 TP34 TP37 grouped as single row 4 pin j...

Страница 10: ...re 7 shows the top layer routing of the ISO154xEVM Figure 7 ISO154xEVM Top layer Routing 10 SLLU166 June 2012 ISO154xEVM Low Power Bidirectional I2 C Isolators Evaluation Module Submit Documentation F...

Страница 11: ...ttom layer ground planes shaded areas Figure 8 ISO154xEVM Bottom layer Ground Planes 11 SLLU166 June 2012 ISO154xEVM Low Power Bidirectional I2 C Isolators Evaluation Module Submit Documentation Feedb...

Страница 12: ...ncy energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio fr...

Страница 13: ...na type and its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved...

Страница 14: ...roduct only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product or 3 Use of this product only after you obtained the Technical Regulatio...

Страница 15: ...property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and in...

Страница 16: ...ncy energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio fr...

Страница 17: ...na type and its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved...

Страница 18: ...roduct only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product or 3 Use of this product only after you obtained the Technical Regulatio...

Страница 19: ...property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and in...

Страница 20: ...egulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided...

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