Intersil ISL71831SEH Manuale utente

USER’S MANUAL

UG040

Rev.0.00

March 7, 2016

ISL71831SEHEV1Z

Evaluation Board User Guide

UG040 Rev.0.00 Page 1 of 9

March 7, 2016

Description

The ISL71831SEH is a radiation tolerant, 32-channel high ESD

protected multiplexer that is fabricated using Intersil’s

proprietary P6SOI (Silicon On Insulator) process technology to

provide excellent reliability. It operates with a single supply

voltage ranging from 3.0V to 5.5V. This evaluation board is

designed to provide easy access to the capabilities of the part.

The evaluation board has a DIP switch, which provides a

convenient way to address all 32 channels without the need

for extra supplies. There’s also a BNC input available that will

allow you to drive the address pins with a signal generator.

Specifications

This board has been configured and optimized for the following

operating conditions:

•V

+ = 3.0V to 5.5V

•V

REF = 3.0V to 5.5V

Key Features

• Jumper selectable input source for each input

• DIP switch to conveniently select 1 of 32 channels

• BNC input for dynamic addressing

• Multiple loading options with jumpers on VOUT

• Convenient power connection

• On-board enable switch

References

ISL71831SEH Datasheet

Ordering Information

PART NUMBER DESCRIPTION

ISL71831SEHEV1Z Evaluation board for the ISL71831SEH

FIGURE 1. ISL71831SEHEV1Z BLOCK DIAGRAM

IN01

IN02

IN32

ADDRESS

IN03

OUT ADC

ISL71831SEH

EVALUATION

BOARD

BUS

WIRE

VREF

A1 A2 A3 A4

SIGNAL

GENERATOR

INPUT

UG040 Rev.0.00 Page 2 of 9

March 7, 2016

ISL71831SEHEV1Z

Power Supplies

This board has power supply inputs for V+and VREF. There are no

requirements for sequencing on these supplies, but it is

recommended that the supplies come up relatively at the same

time. In-line resistors are provided to V+with decoupling

capacitors close to the part for V+and VREF. The in-line resistors

are 100Ωbut can be changed by the user for additional power

supply filtering or to limit the rise time of the supply voltages.

The voltage ranges for V+and VREF are +3V to +5.5V. The

ISL71831SEH is a rail-to-rail mux and should be able to

accommodate any input signal with a voltage level between or

equal to the supply voltages. VREF is used to set the decoder logic

levels.

PCB Layout Guidelines

The ISL71831SEHEV1Z PCB layout has been optimized for ease

of testing. When incorporating the ISL71831SEH into a system

there are a few guidelines that can ensure optimal electrical and

noise performance.

• Analog circuits can conduct noise through paths that connect

it to the “outside world”. These paths include the V+, VREF, the

input to any switch and the output. It is important to make sure

these paths are kept away from known noise sources.

• It is recommended to decouple the power supply pins (V+and

VREF) for power supply filtering. If the traces to the supply lines

are long, it is recommended to use a larger 1µF capacitor at

the point of entry for the supply and a smaller capacitor, like a

0.1µF, close to the part to reduce high frequency

perturbations.

ISL71831SEHEV1Z Evaluation Board

FIGURE 2. TOP SIDE FIGURE 3. BOTTOM SIDE

UG040 Rev.0.00 Page 3 of 9

March 7, 2016

ISL71831SEHEV1Z

ISL71831SEHEV1Z Circuit Schematic

DRAWN BY:

DRAWING TITLE

DATE:

12/02/2013

TIM KLEMANN

32CH ANALOG MULT

ISL71831SEH

GND

V+

VOUT

VREF

D D D D

OUT OUT

OUT

IN IN

TP3

J29

1 2 3

10K

TP1

TP13

J37

1 2 3

J14

1 2 3

J20

J25

SW3

1 2 3

10K

TP10

TP2

TP12

J36

1 2 3

J13

1 2 3

J24

1UF

1 2 3

10K

TP9

J44

1 2 3

TP11

J35

1 2 3

J12

1 2 3

SW6

J23

SW4

1 2 3

10K

J19

J43

1 2 3

J34

1 2 3

J11

1 2 3

J22

1 2 3

J42

1 2 3

SP2

SW1

J33

1 2 3

J10

1 2 3

DNP

1UF

SP1

J41

1 2 3

TP8

J32

1 2 3

J21

J18

J17

1 2 3

SW5

1UF

TP17

TP16

J40

1 2 3

TP7

SW2

J31

1 2 3

10K

49.9K

R10

J16

1 2 3

J27

TP15

J39

1 2 3

TP4

IN11

IN10

IN9

IN8

IN7

IN6

IN5

IN4

IN3

IN2

IN1

VREF

GND

IN17

IN18

IN19

IN20

IN21

IN22

IN23

IN24

IN25

IN26

OUT

IN15

IN12

EN_B

IN14

IN13

IN16

IN32

IN31

IN30

IN29

IN27

IN28

V+

ISL71831SEHVF

J30

1 2 3

10K

SP3

J28

TP14

J38

1 2 3

J15

1 2 3

100PF

1UF

J26

FIGURE 4. ISL71831SEHEV1Z SCHEMATIC

UG040 Rev.0.00 Page 4 of 9

March 7, 2016

ISL71831SEHEV1Z

Bill of Materials

ITEM QTY

REFERENCE

DESIGNATOR VALUE

TOL

(%) RATING TYPE PCB FOOTPRINT MANUFACTURER

MANUFACTURER

PART NUMBER

1 1 C6 100pF 5 50V X7R 0805 PANASONIC ECU-V1H101JCG

2 4 C1, C2, C4,

1µF 10 25V X7R 0805 AVX 08053C105KAT2A

3 1 R3 DNP 1 DNP 0805 GENERIC

41 R1 10Ω1 1/10W 0805 VENKEL CR0805-8W-10R0FT

5 6 R4, R5, R6,

R7, R8, R9

10kΩ1 1/10W 0805 VENKEL CR0805-8W-1002FT (Pb-free)

6 1 R10 49.9Ω1 1/10W 0805 ROHM MCR10EZHF49R9

7 3 SP1-SP3 CONN TEKTRONIX 131-4353-00

818 P1-P4,

P7-P18

THOLE KEYSTONE 1514-2

9 1 BNC1 CONN AMPHENOL 31-5329-51RFX

10 1 SW1-SW6 DIP GRAYHILL 78B06S

11 1 U1 28CDFP INTERSIL ISL71831SEH/PROTO

12 32 J2-J17,

J29-44

THOLE BERG/FCI 68000-236HLF

13 10 J1, J18,

J20-J27

BERG/FCI 69190-202HLF

14 4 Bottom four

corners

3M SJ-5003SPBL

UG040 Rev.0.00 Page 5 of 9

March 7, 2016

ISL71831SEHEV1Z

Board Layout - 4 Layers

FIGURE 5. SILKSCREEN TOP

FIGURE 6. TOP LAYER

UG040 Rev.0.00 Page 6 of 9

March 7, 2016

ISL71831SEHEV1Z

FIGURE 7. PCB – INNER LAYER 1 (TOP VIEW)

FIGURE 8. PCB – INNER LAYER 2 (TOP VIEW)

Board Layout - 4 Layers(Continued)

UG040 Rev.0.00 Page 7 of 9

March 7, 2016

ISL71831SEHEV1Z

FIGURE 9. PCB – BOTTOM LAYER (TOP VIEW)

FIGURE 10. SILKSCREEN BOTTOM

Board Layout - 4 Layers(Continued)

UG040 Rev.0.00 Page 8 of 9

March 7, 2016

ISL71831SEHEV1Z

Typical Performance Curves Unless otherwise noted: V+= +15V, V-= -15V, VREF = 5.0V, TA= +25°C

FIGURE 11. rDS(ON) vs COMMON MODE VOLTAGE (VS= 5V) FIGURE 12. rDS(ON) vs COMMON MODE VOLTAGE (VS= +3.3V)

FIGURE 13. ADDRESS PROPAGATION DELAY FIGURE 14. BREAK-BEFORE-MAKE DELAY

FIGURE 15. ENABLE/DISABLE PROPAGATION DELAY FIGURE 16. CHARGE INJECTION

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

COMMON MODE VOLTAGE (V)

rDS(ON) (Ω)

-55°C

+25°C

+125°C

100

120

0 0.5 1.0 1.5 2.0 2.5 3.0

COMMON MODE VOLTAGE (V)

rDS(ON) (Ω)

-55°C

+25°C

+125°C

200ns/DIV

1V/DIV

2V/DIV

tADHL = 34.382ns

tADLH = 44.087ns

200ns/DIV

1V/DIV

2V/DIV

tBBM = 17.929ns

200ns/DIV

1V/DIV

2V/DIV

tENABLE = 22.670ns

tDISABLE = 41.720ns

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

3.0 3.5 4.0 4.5 5.0 5.5

SUPPLY VOLTAGE (V)

CHARGE INJECTION (pC)

-55°C

+25°C

+125°C

Corporate Headquarters

TOYOSU FORESIA, 3-2-24 Toyosu,

Koto-ku, Tokyo 135-0061, Japan

www.renesas.com

Contact Information

For further information on a product, technology, the most

up-to-date version of a document, or your nearest sales

office, please visit:

www.renesas.com/contact/

Trademarks

Renesas and the Renesas logo are trademarks of Renesas

Electronics Corporation. All trademarks and registered

trademarks are the property of their respective owners.

IMPORTANT NOTICE AND DISCLAIMER

RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL

SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING

REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND

OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,

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(Rev.1.0 Mar 2020)

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