ATS625LSG
True Zero-Speed Low-Jitter
High Accuracy Gear Tooth Sensor
The ATS625 true zero-speed gear tooth sensor is an optimized Hall IC and magnet
configuration packaged in a molded module that provides a manufacturer-friendly
solution for digital gear tooth sensing applications. The sensor assembly consists
of an over-molded package that holds together a samarium cobalt magnet, a
pole piece concentrator, and a true zero-speed Hall IC that has been optimized
to the magnetic circuit. This small package can be easily assembled and used in
conjunction with gears of various shapes and sizes.
The sensor incorporates a dual-element Hall IC that switches in response to
differential magnetic signals created by a ferrous target. Digital processing of the
analog signal provides zero-speed performance independent of air gap as well
as dynamic adaptation of device performance to the typical operating conditions
found in automotive applications (reduced vibration sensitivity). High-resolution
peak detecting DACs are used to set the adaptive switching thresholds of the
device. Switchpoint hysteresis reduces the negative effects of any anomalies in the
magnetic signal associated with the targets used in many automotive applications.
This sensor system is optimized for crank applications that utilize targets that
possess signature regions.
TheATS625 is provided in a 4-pin SIP. The Pb (lead) free option, available by
special request, has a 100% matte tin plated leadframe.
Package SG, 4-pin Through Hole
Features and Benefits
1
2
3
4
1. VCC
2. VOUT
3. AUX
4. GND
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
*
, V
CC
.......................................
26.5 V
Reverse-Supply Voltage, V
RCC
........................
鈥?8 V
Reverse-Supply Current, I
RCC
........................50
mA
Reverse-Output Voltage, V
ROUT
.....................
鈥?.5 V
Continuous Output Current, I
OUT
...................25
mA
Output Sink Current, I
OUT
.............................
10 mA
Operating Temperature
Ambient, T
A
, Range L................
鈥?0潞C to 150潞C
Maximum Junction, T
J(max)
........................165潞C
Maximum Junction
鈮?00
hr, T
J(max100)
......180潞C
Storage Temperature, T
S
..................
鈥?5潞C to 170潞C
*See the
Power Derating
section.
Highly repeatable over operating temperature range
Tight timing accuracy over operating temperature range
True zero-speed operation
Air-gap鈥搃ndependent switchpoints
Vibration immunity
Large operating air gaps
Defined power-on state
Wide operating voltage range
Digital output representing target profile
Single-chip sensing IC for high reliability
Small mechanical size
Optimized Hall IC magnetic system
Fast start-up
AGC and reference adjust circuit
Undervoltage lockout
Use the following complete part numbers when ordering:
Part Number
Pb-free
Packing
1
ATS625LSGTN
ATS625LSGTN-T
1
Contact Allegro
2
Available
鈥?/div>
Yes
2
Tape and Reel 13-in. 800 pcs./reel
for additional packing options.
by special request only.
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ATS625LSG-DS, Rev. 1
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