Allegro’s portfolio of crankshaft sensor ICs is well suited to meet the applications needs for speed-only and direction detection requirements. Allegro was the first to market with Hall-effect crankshaft sensor ICs with direction detection (a required component for start-stop engine technologies), and leads the way in market performance for both speed-only and direction detection crankshaft sensor ICs.
Allegro sensor ICs are available in the Gear-Tooth Sensor (GTS) package with integrated back-biasing magnet for ease of implementation and high performance with a ferrous metal target; as well as in SIP package offerings with and without integrated bypass capacitors, for use with encoded ring magnet targets.
|Highly-Accurate Analog Speed Sensor ICs|
|Part Number||Operate Point (G)||Release Point (G)||Hysteresis (g)||Min. Speed||Packages|
|A1421||0 to 27.5||-12.5 to 7.5||Typ 15||20 Hz||K|
|A1422||5 to 35||-35 to -5||Typ 30||20 Hz||K|
|A1423||10 to 100||-100 to -10||Typ 130||20 Hz||K|
|A1425||-11 to 11||-11 to 11||Typ 8.5||20 Hz||K|
|Gear-Tooth Hall-Effect Speed Sensor ICs (Includes IC and Magnet)|
|Part Number||Supply Voltage (V)||Output Type||Power-On State||Specified Air Gap Range (>20 Hz)||Key Spec||Min. Speed||Packages|
|ATS616||3.5 to 24||3-wire||High (off)||0.4 to 2.5 mm||Timing accuracy||10 Hz||SG|
|ATS627||4 to 24||3-wire||High (off)||0.5 to 3 mm||Repeatability||Zero speed||SG|
|Temperature range code: L = -40°C to 150°C|