Precision, High Speed, Hall-Effect Angle Sensor IC
with Integrated Diagnostics for Safety-Critical Applications
A1333
OPERATING CHARACTERISTICS (continued): Valid over the full operating voltage and ambient temperature ranges, unless otherwise noted
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Unit[1]
PWM INTERFACE SPECIFICATIONS
PWM Frequency Min Setting
–
–
–
–
–
98
128
3.125
5
–
–
–
–
–
Hz
options
kHz
%
PWM Carrier Frequency
fPWM
PWM Programmable Options (7 bits)
PWM Frequency Max Setting
PWM Output Low Clamp
PWM Output High Clamp
DPWM(min)
DPWM(max)
Corresponding to digital angle of 0x000
Corresponding to digital angle of 0xFFF
95
%
INCREMENTAL OUTPUT, ABI (UVW) SPECIFICATIONS
ABI and UVW Output Angular
hysANG
RESAB
Programmable via EEPROM (6 bits)
0
1
4
1
–
–
–
–
1.38
2048
8192
16
degrees
PPR
Hysteresis [6]
Programmable via EEPROM, 4 bit field.
Specified in pulses per revolution, PPR
AB Channel Resolution [6]
Equal to 4 × RESAB, specified in counts per
revolution, CPR
AB Quadrature Resolution [6]
UVW Pole Pairs [6]
RESAB_INT
Npole
CPR
DC commutation signals. Programmable via
EEPROM, 4-bit field.
pole pairs
MANCHESTER INTERFACE SPECIFICATIONS
Manchester High Voltage
Manchester Low Voltage
VMAN(H)
VMAN(L)
Applied to VCC line
Applied to VCC line
7.3
8
5
VCC(max)
5.7
V
V
VCC(min)
Line state changes once or twice per bit;
maximum speed is usually limited by VCC line
capacitance
Manchester Bit Rate
fMAN
2.2
–
100
kbit/s
BUILT-IN SELF TEST
Configurable to run on power-up or on user request.
Runs in parallel with CVH self-test (if enabled).
Logic BIST Time
tLBIST
–
–
30
30
–
–
ms
ms
Circular Vertical Hall Self-Test
Time
Configurable to run on power-up or on user request.
Runs in parallel with LBIST (if enabled).
tCVHST
Continued on the next page…
7
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com