AMIS-30622 Datasheet, PDF (10/42 Pages) AMI SEMICONDUCTOR – I2C Microstepping Motordriver

AMIS-30622
7. Typical application
I²C
bus
1 µF
Connected
to Vbat or
GND
1 kΩ
220 nF
AMIS - 30622
1 SDA
SWI 20
Optional
1 kΩ
Connected
to Vbat or
GND
2 SCK
VBB 19
3 VDD
MOTXP 18
4 GND
GND 17
100 nF
5 TST1
6 TST2
7 GND
8 HW
MOTXN 16
MOTYP 15
GND 14
MOTYN 13
100 nF
M
Vbat
9 CPN
10 CPP
VBB ¹²
VCP 11
220 nF
100 µF
Notes
(1) Optionally an external switch to Vbat or GND can be connected to the SWI pin
(2) Resistors tolerance: ± 5%
(3)
Depending on the application the ESR value of the 1µF and 100µF capacitors must be carefully chosen. The
working voltage of the 100µF capacitor depends on the maximum Vbat value.
(4) 100nF capacitors must be close to pins VBB and VDD
(5) 220nF capacitors must be as close as possible to pins CPN, CPP, VCP and VBB to reduce EMC radiation
(6) If SDA and/or SCK input voltage ≤ -0.3 Volts, then a resistor of 22 to 100Ω must be added in series
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