ATS674 Allegro MicroSystems, ATS674 Datasheet - Page 2

• Manufacturer Part Number: ATS674
• Description: (ATS673 / ATS674) Self-Calibrating TPOS Gear Tooth Sensor Optimized
• Manufacturer: Allegro MicroSystems

ATS673 and
ATS674
Features and Benefits (continued)
▪ AGC and reference adjust circuit
▪ Undervoltage lockout
Description (continued)
performance independent of air gap and also to dynamically adapt
device performance to the typical operating conditions found in
automotive applications, particularly cam sensing applications
(reduced vibration sensitivity).
High-resolution (9-bit) peak detecting DACs are used to set the
adaptive switching thresholds of the devices, ensuring high accuracy
Absolute Maximum Ratings
Selection Guide
ATS673LSETN-LT-T
ATS673LSETN-HT-T
ATS674LSETN-LT-T
ATS674LSETN-HT-T
1
be NOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The device
should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Status
change: May 1, 2006. These variants include: ATS673LSETN-LT, ATS673LSETN-HT, ATS674LSETN-LT, and ATS674LSETN-HT.
2
Supply Voltage
Reverse-Supply Voltage
Continuous Output Current
Reverse Output Current
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Pb-based variants are being phased out of the product line. Certain variants cited in this footnote are in production but have been determined to
Contact Allegro for additional packing options.
Pin-out Diagram
Part Number
1
2
3
Characteristic
4
Pb-free
Yes
Yes
Yes
Yes
1
V
Self-Calibrating TPOS Gear Tooth Sensor Optimized
OUT
(Over Tooth)
High
High
Low
Low
Symbol
T
Terminal List
I
J
V
V
I
ROUT
(max)
T
OUT
Name
VOUT
RCC
T
TEST
stg
GND
CC
VCC
A
Range L
for Automotive Cam Sensing Applications
High absolute edge detection accuracy
Connects power supply to chip
Device output
For Allegro use, float or tie to GND
Ground terminal
High target wobble
Application
even in the presence of gear eccentricity. Hysteresis in the thresholds
reduces the negative effects of anomalies in the magnetic signal
(such as magnetic overshoot) associated with the targets used in
many automotive applications. The ATS673 and 674 also include
a low bandwidth filter that increases the noise immunity and the
signal to noise ratio of the sensor.
Two options are available for output polarity, low over tooth (LT)
and high over tooth (HT). For applications requiring absolute
accuracy use the ATS674. The ATS673 should be used for targets
with high wobble.
Notes
Description
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
–40 to 150
–65 to 170
Rating
13-in. reel, 450 pieces/reel
–18
165
28
20
50
Number
Packing
1
2
3
4
Units
mA
mA
ºC
ºC
ºC
V
V
2
2