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Datasheets:
ATS625LSG: True Zero-Speed, Low-Jitter, High-Accuracy Gear-Tooth Sensor IC (PDF)
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Hall-Effect Sensor ICs,
Gear-Tooth Hall-Effect Speed Sensor ICs
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ATS625LSG
True Zero-Speed Low-Jitter High Accuracy Gear Tooth Sensor IC
The ATS625LSGTN-T is in production but has been determined to be Pre-EOL. This classification indicates the product is approaching end of life. Within a minimum of 6 months, the device will enter its final order phase (LTB). Sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because of obsolescence in the near future. Samples are no longer available.
Date of status change: February 1, 2010
Our next generation recommended substitutes are:
- For the ATS625LSGTN-T, we recommend the ATS667LSGTN-T.
Features and Benefits
- Highly repeatable over operating temperature range
- Tight timing accuracy over operating temperature range
- True zero-speed operation
- Air-gap–independent 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
Description
The ATS625 true zero-speed gear tooth sensor IC is an optimized Hall IC and rare earth pellet configuration that provides a manufacturer-friendly solution for digital gear tooth sensing applications. The over-molded package holds together a samarium cobalt pellet, 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 device 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 zerospeed 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 device is optimized for crank applications that utilize targets that possess signature regions.
The ATS625 is provided in a 4-pin SIP. It is lead (Pb) free, with 100% matte tin plated leadframe.
Functional Block Diagram
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| ATS625LSGTN-T | 4-pin SIP | Yes | view data | -40 °C to 150 °C | pre-eol |
Contact Local Sales Representative or check distributor stock |
Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.