L9935 Functional description
Doc ID 5198 Rev 10 25/29
5.17 Electromagnetic emission classification (EME)
Electromagnetic emission classes presented below are typical data found on bench test. For
detailed test description please refer to ’Electromagnetic Emission (EME) Measurement of
Integrated Circuits, DC to 1GHz’ of VDE/ZVEI work group 767.13 and VDE/ZVEI work group
767.14 or IEC project number 47A 1967Ed. This data is targeted to board designers to allow
an estimation of emission filtering effort required in application.
Electromagnetic emission is not tested in production.
Figure 13. State diagram
Remark: Return to standby is possible from every state
Note: Reversing polarity in low current mode no flyback check will be performed.
Table 12. Electromagnetic emission
Pin EME class Remark
GND E 10 0 1 test
V
CC
E - e
Blocked with 100nF close in to the device
EN. SDI, CSN, CSK, SDO in
tristate
K - h -
SDO G - f SDO in low-Z state, no data transfer
Power output A
1
, A
2
, B
1
, B
2
E 5 f Sourcing output
Power output A
1
, A
2
, B
1
, B
2
-6 f
Sinking output in chopping mode
f
osc
= 20 kHz
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TURNON
NEWTELEGRAM
NOERROR
NEWTELEGRAM
NEW
TELEGRAM
NEW
TELEGRAM
NEWTELEGRAMCURRENT
NEW
TELEGRAM
MISSING
FLYBACK
DIFFERENTPOLARITY
SHORT
TOGND
SHORTTO63
NOSHORT
NOSHORT
SAMEPOLARITYASBEFORE
SHORTTO63
SHORT
TOGND
SHORT
TOGND
SHORT
TO63
SHORT
TO63
SHORTTOGND
SHORT
TO63
SHORTTOGND
NEWTELEGRAM
SAMEPOLARITY
FLYBACK/+
ORREVERSEPOLARITY
THANBEFORE
