AK7401 Datasheet, PDF (7/29 Pages) Asahi Kasei Microsystems – Rotary Position Sensor IC

[AK7401]
12. PWM Characteristics
1) DC Characteristics
(Ta=-40 to +150C, V_DD=4.0 to 5.5V; unless otherwise specified)
Parameter
Symbol
Conditions
Min. Typ.
Output Low Level V_HP
Output High Level V_LP
I_OUT＝-4mA
I_OUT＝4mA
5
90
95
PWM Output
Resolution
R_PWM
0.0195
Max.
10
2) AC Characteristics
(Ta=-40 to +150C, V_DD=4.0 to 5.5V; unless otherwise specified)
Parameter
Symbol
Conditions
Min. Typ.
E_PWMF=0x3F
225 250
PWM Frequency
F_PWM E_PWMF=0x07
E_PWMF=0x00
450 500
900 1000
Rise Time
T_rOUT
Push-Pull output
2.2nF, 10kΩ
0.1 0.22
Push-Pull output
Fall Time
T_fOUT Open drain output 0.2 0.47
2.2nF, 10kΩ
Rise Time
T_rOUT
Open drain output
2.2nF, 10kΩ
40
50
PWM Jitter
Duty at 0°
J_PWM
1σ
PWM polarity
positive
9.9
10
Duty at 359.9°
PWM polarity
positive
89.9 90
Duty at 0°
PWM polarity
negative
89.9 90
Duty at 359.9°
PWM polarity
negative
9.9
10
Max.
275
550
1100
0.6
0.9
60
0.05
10.1
90.1
90.1
10.1
Unit
%V_DD
%V_DD
%_DC/LSB
Unit
Hz
Hz
Hz
μs
μs
μs
%_DC
%_DC
%_DC
%_DC
%_DC
angle 0°
duty 10%
angle 180°
duty 50%
F_PWM
V_HP
V_LP
angle 359.9°
duty 90%
Figure 4. Duty at Each Angle Position (PWM polarity positive case)
014002685-E-01
-7-
2015/07