TXD

RXD

1 k W

60 W

GND 1

GND 2

(includesprobeand

jigcapacitance)

C = 0.1 F 1%

m

±

CANH

CANL

GND1

C = 0.1 F

m

± 1%

S 1

2.0 V

0.8 V

GND2

ISO1050

30 W

CANH

CANL

47nF

10 nF

Spectrum Analyzer

TXD

500kbps

30 W

6.2kW

6.2kW

DEVICE INFORMATION

ISO1050

Figure 13. Common-Mode Transient Immunity Test Circuit

Figure 14. Electromagnetic Emissions Measurement Setup

DRIVER

RECEIVER

INPUTS

OUTPUTS

DIFFERENTIAL INPUTS

OUTPUT

BUS STATE

BUS STATE

RXD

TXD

CANH

CANL

H

L

DOMINANT

L

DOMINANT

H

Z

Z

RECESSIVE

?

?

Open

Z

Z

RECESSIVE

H

RECESSIVE

X

Z

Z

RECESSIVE

Open

H

RECESSIVE

(1)

H = high level; L = low level; X = irrelevant; ? = indeterminate; Z = high impedance

(2)

Logic low pulses to prevent dominant time-out.

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Product Folder Link(s): ISO1050