Silicon Laboratories Si8600ISO, Si8605ISO, Si8655ISO, Si8621ISO, Si8663ISO User Manual

Si86xxISO-EVB UG

Si86XXISO EVALUATION BOARD USER’S GUIDE

1. Introduction

The Si86xxISO evaluation board allows designers to evaluate Silicon Lab's family of CMOS ultra-low-power
isolators. These isolators are CMOS devices employing RF coupler technology to transmit digital information
across an isolation barrier. Very high speed operation at low power levels is achieved. These products are based
on Silicon Laboratories’ proprietary RF isolation technology and offer shorter propagation delays, lower power
consumption, improved noise immunity, smaller installed size, and more stable operation with temperature and age
versus opto couplers. The Si861x/2x/3x/4x/5x/6x include up to six unidirectional isolated channels, permitting data
transmission up to 150 Mbps. The Si860x isolator series consists of single-package galvanic isolation solutions for

2

C, SMBus, and PMBus serial port applications. For more information, refer to the respective family data sheets.

I

A summary of the benefits provided by the Silicon Laboratories Si86xx CMOS Digital Isolator family includes:

 Si86xx Digital Isolators

5.0 kV, 3.75 kV, and 1.0 kV isolation ratings
UL, CSA, and VDE certifications
DC to 150 Mbps
2.5 to 5.5 V VDD supply range
Fail-safe operating mode(s)
–40 to 125 °C temperature range
10 ns max propagation delay
<1.5 mA/channel @ 1 Mbps
<1.5 ns pulse width distortion
Very low EMI
Up to 50 V/m electric field immunity
>1000 A/m magnetic field immunity
>30 kV/µs CMTI
4 kV HBM ESD immunity

 Si860x I

Bidirectional SDA and SCL
1.7 Mbps
35 mA open drain I/O
3 to 5.5 V VDD supply range

 Packaging and Isolation Rating Options

WB SOIC-16 (5 kV)
NB SOIC-16 (3.75 kV)
NB SOIC-8 (3.75 kV)
QSOP-16 (1 kV)
RoHS compliant

2

C-Compatible Bidirectional Isolators

Rev. 0.2 2/11 Copyright © 2011 by Silicon Laboratories Si86xxISO-EVB UG

Si86xxISO-EVB UG

2. Kit Contents

The Si86xxISO Evaluation Kit contains the following items:

 Si86xxISO based evaluation board (Si86xxISO-EVB) shown in Figure 1.
 Si8600, Si8605, Si8621, Si8655, and Si8663 CMOS digital isolators installed on the evaluation board

Figure 1. Si86xxISO Evaluation Board Overview

2 Rev. 0.2

Si86xxISO-EVB UG

3. Hardware Overview and Setup

The Si86xxISO evaluation board is populated with the following isolators:

 Si8600 (2-channel I

 Si8605 (2-channel digital isolator, 2-channel I
 Si8621 (2-channel digital isolator, one forward, one reverse)
 Si8455 (5-channel digital isolator, five forward)
 Si8663 (6-channel digital isolator, three forward, three reverse)

The board is designed to be powered from two separate supplies (2.5–5.5 V, 500 mA) that power all the isolators
on the board. VDD1,GND1 and VDD2,GND2 power the 5 kV isolators. VDD3,GND3 and VDD4,GND4 power the 1
and 2.5 kV isolators. Supplies as low as 2.5 V can be used. If a user wants to evaluate an isolator other than the
ones populated, this can be accomplished by removing the footprint-compatible device installed on the evaluation
board and replacing it with the desired isolator device. Figure 2 provides a silkscreen overview of the board.

2

C isolator)

2

C isolator)

Figure 2. Si86xxISO Evaluation Board Silkscreen

Rev. 0.2 3

Si86xxISO-EVB UG

3.1. Digital Isolator Considerations

The Si86xxISO evaluation board (see Figure 1) provides a means of evaluating the Si861x,2x,3x,4x,5x,6x digital
isolator families as well as the Si8600 isolated I
connect a digital input signal (5 Vpeak max, with desired clock frequency up to 150 Mbps) to the desired input
channel. To view the isolated channel’s data transmission, connect a scope probe to the output channel of interest.
There are various inputs and outputs on either side of the board depending on the device one chooses to evaluate,
as indicated by the silk screen. The board can be used to measure propagation delay, pulse-width distortion,
channel-channel matching, pulse-width skew, and various other parameters.

The nominal output impedance of an isolator driver channel is approximately 50 , ±40%, which is a combination
of the values of the on-chip series termination resistor and the channel resistance of the output driver FET. When
driving loads where transmission line effects are a factor, output pins should be terminated with 50  controlled
impedance PCB traces.

Figure 3 illustrates the Si8621 transmitting a 500 kHz (3 Vpeak) signal through the Si8621. VDD1 and VDD2 were
powered from 3 V. Channel 1 illustrates the input, and Channel 2 illustrates the output.

2

C family. After power (2.5–5 V) has been supplied to the board,

4 Rev. 0.2

Figure 3. 500 kHz (5 V Peak) Signal

Si86xxISO-EVB UG

3.2. I2C Isolator Considerations

After power (3–5 V) has been supplied to the board, connect a digital square wave input (5 Vpeak max, with
desired clock frequency up to 1.7 MHz) to the desired input channel. The Si8600/05 I
resistors already installed. If these resistors are redundant with another board that is being used to evaluate the
Si8600/05, the user should remove the redundant pull-up resistors to accommodate adequate drive current for the
test being performed.

Figure 4 illustrates Side B Pulling Up, with Side A following for the Si8600. The Si8600 was powered from 3 V on
both sides with a 100 kHz input test signal.

2

C isolators have 1 k pull-up

Figure 4. Side B Pulling Up, Side A Following

Note: The test points in front of each device have 1 mm spacing. If desired, the test points can be replaced with a 1 mm

spacing terminal block to assist in evaluation.

Rev. 0.2 5

Si86xxISO-EVB UG

STANDOFFS AND SCREWS

ISOLATION

1

AGND

2

NC

3

AVDD

4NC5

ASDA6ASCL

7

AGND

8

NC

9

BGND

10

NC

11

BSCL

12

BSDA

13

NC

14

BVDD

15

NC

16

BGND

U1

Si8600AD-B-IS

ISOLATION

1

AVDD

16

BVDD

9

BGND

8

AGND

2NC3

ASDA

13

BDOUT

12

BDIN

4

ADIN

5

ADOUT

15NC14

BSDA

6

ASCL

11

BSCL

7

NC

10

NC

U2

Si8605AD-B-IS

C1

1.0UF

C2

1.0UF

R1

1K

R2

1K

R3

1K

R4

1K

MH1 MH2 MH3 MH4

R5

1K

R6

1K

R7

1K

R8

1K

C3

1.0UF

C4

1.0UF

ISOLATION

1

VDD1

16

VDD2

9

GND2

8

GND1

2

A13A2

13B312

B4

4

A35A4

15B114

B2

6

A5

11

B5

7

A6

10

B6

U3

Si8663BD-B-IS

C5

1.0UF

C6

1.0UF

1

2

3

4

J1

HDR1X4

1

2

3

4

J2

HDR1X4

123

4

5

J3

HDR1X5

123

4

5

J4

HDR1X5

1

23456

7

J5

12345

6

7

J6

GND_1

GND_1

GND_1

GND_1

GND_2

GND_2

GND_2

GND_2

GND_1

GND_1

GND_2

GND_2

VDD_1 VDD_2 VDD_1 VDD_2

VDD_1 VDD_2

GND_1

GND_2

GND_1

GND_2

GND_1

GND_2

VDD_1 VDD_2

4. Si86xxISO Evaluation Board Schematics

6 Rev. 0.2

Figure 5. Si86xxISO Evaluation Board Schematic (1 of 2)

Si86xxISO-EVB UG

ISOLATION

1

VDD1

16

VDD2

9

GND2

8

GND1

2A13

A2

13B312

B4

4A35

A4

15B114

B2

6

A5

11

B5

7

A6

10

B6

U4

Si8663EC-B-IS1

C7

1.0UF

C8

1.0UF

ISOLATION

1

VDD1

2

GND1

3A14

A25A36A4

7

A5

8

GND1

9

GND2

10

B5

11

B4

12

B3

13

B2

14

B1

15

GND2

16

VDD2

U5

Si8655BA-B-IU

C9

1.0UF

C10

1.0UF

ISOLATION

1

VDD12A13A24GND1

5

GND2

6

B2

7B18

VDD2

U6

Si8621BC-B-IS

C12

1.0UF

C11

1.0UF

1

234

5

6

7

8

J7

HDR1X 8

1

23456

7

8

J8

HDR1X 8

1

2

3

4

5

6

J9

HDR1X 6

12345

6

J10

HDR1X 6

1

2

3

J11

HDR1X 3

123

J12

HDR1X 3

GND_3

GND_3

GND_4

GND_4

VDD_3 VDD_4

GND_3

GND_4

VDD_3 VDD_4

GND_3

GND_4

VDD_3 VDD_4

GND_3 GND_ 4

GND_4

GND_3

VDD_3

GND_3

VDD_4

GND_4

GND_3 GND_4

Figure 6. Si86xxISO Evaluation Board Schematic (2 of 2)

Rev. 0.2 7

Si86xxISO-EVB UG

5. Bill of Materials

Table 1. Si86xxISO Evaluation Board Bill of Materials*

Item Qty Ref Part # Mfr Description

1 4 MH1–4 1902AK-ND/H542-ND Digikey

2 12 C1–12 PCC2249CT-ND Digikey

3 8 R1–8 RR12P1.0KBCT-ND Digikey

4 2 J11–12 S1011E-03-ND Digikey

5 2 J1–2 S1011E-04-ND Digikey

6 2 J3–4 S1011E-05-ND Digikey

7 2 J9–10 S1011E-06-ND Digikey

8 2 J7–8 S2011E-08-ND Digikey

9 2 J5–6 S2011E-09-ND Digikey

10 1 U1 Si8600AD-B-IS Silicon Labs

11 1 U2 Si8605AD-B-IS Silicon Labs

Standoff, Nylon, 4–40, 1/4" HEX x 0.250"

HGT or EQ, RoHS

Cap 1.0 µF, X5R, Ceramic, 0805, 16 V,

±10%, OR EQ, RoHS

RES, 1 k , SMT, 0805, 1/10 W, ±0.1%,

OR EQ, RoHS

STAKE HEADER, 1x3, 0.1" CTRS, OR EQ,

RoHS

STAKE HEADER, 1x4, 0.1" CTRS, OR EQ,

RoHS

STAKE HEADER, 1x5, 0.1" CTRS, OR EQ,

RoHS

STAKE HEADER, 1x6, 0.1" CTRS, OR EQ,

RoHS

STAKE HEADER, 1X8, 0.1" CTR, GOLD,

OR EQ, RoHS

STAKE HEADER, 1X9, 0.1" CTR, GOLD,

OR EQ, RoHS

2

C ISO, 2-Ch, 2 Bidirectional, 1.7 MHz,

IC, I

5 kV, SOL-16, RoHS

IC, 4-Ch I

2 Unidirectional, 1.7 MHz, 5 kV, SOL-16,

2

C ISO, 2 Bidirectional,

RoHS

12 1 U6 Si8621BC-B-IS Silicon Labs

13 1 U5 Si8655BA-B-IU Silicon Labs

14 1 U3 Si8663BD-B-IS Silicon Labs

15 1 U4 Si8663EC-B-IS1 Silicon Labs

*Note: All components on this BOM are lead free.

8 Rev. 0.2

IC, ISOpro Low-Power 2-Channel Isolator,

150 Mbps, 3.75 kV, SO-8, RoHS

IC, 5-Channel Digital Isolator, Low-Power,

5 Forward, 150 Mbps, 1 kV, QSOP-16,

RoHS

IC, 6-Channel Digital Isolator, Low-Power,

3 Forward/3 Reverse, 150 Mbps, 5 kV,

SOL-16, RoHS

IC, 6-Channel Digital Isolator, 3 Forward/3

Reverse, Low-Power, 150 Mbps, 3.75 kV,

SO-16, RoHS

6. Ordering Guide

Ordering Part Number (OPN) Description

Si86xxISO-KIT Si86xx CMOS digital isolator evaluation board kit

Si86xxISO-EVB UG

Table 2. Si86xxISO Evaluation Board Ordering Guide

Rev. 0.2 9

Si86xxISO-EVB UG

DOCUMENT CHANGE LIST

Revision 0.1 to Revision 0.2

 Updated BOM and schematics to reflect change

from Rev A to Rev B silicon.

10 Rev. 0.2

NOTES:

Si86xxISO-EVB UG

Rev. 0.2 11

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