AK7401 Datasheet, PDF (26/29 Pages) Asahi Kasei Microsystems – Rotary Position Sensor IC

[AK7401]
19. Recommended External Circuit
It is recommended to use 100nF decoupling capacitors.
The TEST0 and TEST1 pins must be open.
When the 3-wire SPI interface is not used, the SCLK and CS pins must be connected to GND and the
SIN/SOUT pin must be open.
When PWM interface is not used, the OUT pin must be open.
100nF
VDD
VSS
AK7401
TEST0 SIN/SOUT
CS
TEST1
SCLK
OUT
GND
VDD
SIN/SOUT
SCLK
CS
VSS
SPI Master
5V
SIN/SOUT
SCLK
CS
GND
Figure 11. Recommended External Circuit for 3-wire SPI Connection
100nF
VDD
VSS
AK7401
TEST0 SIN/SOUT
CS
TEST1
SCLK
OUT
Less than 2.2nF
GND
VDD
Duty cycle calculator
5V
OUT
VSS
OUT
GND
Figure 12. Recommended External Circuit for PWM Connection
014002685-E-01
- 26 -
2015/07