ATS667LSG
True Zero-Speed, High Accuracy Gear Tooth Sensor IC
OPERATING CHARACTERISTICS Valid over operating voltage and temperature ranges; unless otherwise noted
Characteristics
Electrical Characteristics
Supply Voltage2
Symbol
Test Conditions
Min.
Typ.1
Max.
Unit
VCC
VCC(UV)
IRCC
VZ
Operating, TJ < TJ(max)
4.0
–
–
3.5
–
24
3.95
– 10
–
V
Undervoltage Lockout (UVLO)
Reverse Supply Current
Supply Zener Clamp Voltage
Supply Zener Current
V
VCC = –18 V
–
mA
V
ICC = 15 mA, TA = 25 °C
26.5
–
–
IZ
TA = 25°C, TJ < TJ(max), continuous, VZ =26.5 V
–
15
mA
mA
mA
Output off
Output on
4
7
12
Supply Current
ICC
4
7
12
Power-On State Characteristics
Power-On State
POS
tPO
Connected as in figure 6
–
–
High
–
–
2
–
Power-On Time3
SROT < 200 rpm; VCC > VCC(min)
ms
OUTPUT STAGE
Low Output Voltage
VOUT(SAT) IOUT = 10 mA, Output = on
VZOUT IOUT = 3 mA, TA = 25°C
–
26.5
25
–
100
–
250
–
mV
V
Output Zener Clamp Voltage
Output Current Limit
Output Leakage Current
IOUT(LIM) VOUT = 12 V, TJ < TJ(max)
IOUT(OFF) Output = off, VOUT = 24 V
45
–
70
10
mA
μA
RPULLUP = 1 kΩ, CL = 4.7 nF, VPULLUP = 12 V,
10% to 90%, connected as in figure 6
Output Rise Time
tr
tf
–
–
10
–
2
μs
μs
RPULLUP = 1 kΩ, CL = 4.7 nF, VPULLUP = 12 V,
90% to 10%, connected as in figure 6
Output Fall Time
0.6
D-to- A Converter (DAC) Characteristics
Allowable User Induced Differential
Offset4,5
BDIFFEXT User induced differential offset
–
±60
–
G
Calibration
Possible reduced edge detection accuracy, duty
cycle not guaranteed
Initial Calibration6
CALI
–
–
1
6
–
edge
–
Running mode operation, bounded for
decreasing AG, unlimited for increasing AG
Continuous
Update Method
Operating Characteristics (with Allegro 60-0 Reference Target)
Operational Air Gap Range7
AGOP
Repeatability and duty cycle within specification
0.5
–
–
–
2.5
3.1
mm
mm
Maximum Operational Air Gap Range
AGOPMAX Output switching only (no missing edges)
100 Gpk-pk ideal sinusoidal signal, TA=150°C,
SROT=1000 rpm (f=1000Hz)
Relative Repeatability8
–
–
0.12
40
–
–
deg.
%
TθE
Percentage of most recent AGpk-pk, single
instantaneous air gap increase, f<500Hz,
VPROC(pk-pk) > VLOE after sudden AG change
Maximum Single Outward Sudden Air
Gap Change9
ΔAGMAX
Wobble < 0.5 mm, AGOP < AGOPMAX , direction
of target rotation pin 1 to pin 4
Duty Cycle
D
42
47
52
%
Continued on the next page…
Allegro MicroSystems, Inc.
115 Northeast Cutoff
3
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
