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L9333

EMC SPECIFICATION

EMS (electromagnetic susceptibility)

Measurement setup:

DUT mounted on a specific application board is driven in a typical application circuit (see below). Two devices

are stimulated by a generator to read and write bus signals. They will be monitored externally to ensure proper

function.

Measurement method:

a)

The two bus lines are transferred 2m under a terminated stripline. That's where they were exposed to the

RF-field. Stripline setup and measurement method is described in DIN 40839-4 or ISO 11452-5.

b)

DUT mounted on the same application board is exposed to RF through the tophole of a TEM-cell. Mea-

surement method according SAE J1752.

c)

The two bus lines are transferred into a BCI current injection probe. Setup and measurement method is

described in ISO 11452-4.

Failure criteria:

Failure monitoring is done by envelope measurement of the logic signals with a LeCroy oscilloscope with ac-

ceptance levels of 20% in amplitude and 2% time.

Limits:

The device is measured within the described setup and limits without fail function.

The Electromagnetic Susceptivity is not tested in production.

a) Field strength under stripline of > 250V/m in the frequency range 1 - 400MHz modulation:AM 1kHz 80%.

b) Field strength in TEM-cell of > 500V/m in the frequency range 1 - 400MHz modulation:

AM 1kHz 80%.

c) RF-currents with BCI of > 100mA in the frequency range 1 - 400MHz modulation:

AM 1kHz 80%.

Measured Circuit

The EMS of the device was verified in the below described setup.