AATS643LSH_06 Datasheet, PDF (3/16 Pages) Allegro MicroSystems – Self-Calibrating, Zero-Speed Differential Gear Tooth Sensor with Continuous Update

ATS643LSH
Self-Calibrating, Zero-Speed Differential
Gear Tooth Sensor with Continuous Update
OPERATING CHARACTERISTICS using reference target 60-0, T_A and V_CC within specification, unless otherwise noted
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
ELECTRICAL CHARACTERISTICS
Supply Voltage
Undervoltage Lockout
Supply Zener Clamp Voltage
Supply Current
V_CC
V_CC(UV)
V_Z
I_CC(Low)
Operating; T_J < 165 °C
V_CC 0 → 5 V
I_CC = 19 mA for ATS643-I1, and 19.8 mA for
ATS643-I2; T_A = 25°C
ATS643-I1
ATS643-I2
ATS643-I1
I_CC(High)
ATS643-I2
4.0
–
–
3.5
28
–
4.0
6
5.9
7
12.0
14.0
11.8
14.0
24
4.0
–
8.0
8.4
16.0
16.8
Supply Current Ratio
/ ^ICC(High) Ratio of high current to low current
I_CC(Low)
POWER-ON CHARACTERISTICS
1.85
–
3.05
Power-On State
Power-On Time¹
OUTPUT STAGE
I_CC(PO)
t_on
t < t_on; dI/dt < 5 μs
Target gear speed < 100 rpm
–
High
–
–
1
2
Output Slew Rate²
Output State
dI/dt R_LOAD = 100 Ω, C_LOAD = 10 pF
–
7
–
R_SENSE on high side (VCC pin); I_CC = I_CC(High)
–
Low
–
V_OUT
R_SENSE on low side (GND pin); I_CC = I_CC(High)
–
High
–
Units
V
V
V
mA
mA
mA
mA
–
mA
ms
mA/μs
mV
mV
Continued on the next page.
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com