ATS667LSGTN-T Allegro

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Features and Benefits Description Optimized robustness against magnetic offset variation The ATS667 is a true zero-speed gear tooth sensor IC consisting Small signal lockout for immunity against vibration of an optimized Hall IC-rare earth pellet configuration in a Tight duty cycle and timing accuracy over full operating single overmolded package. The unique IC and package design temperature range provides a user-friendly solution for digital gear tooth sensing True zero-speed operation applications. This small package can be easily assembled and Air gap independent switchpoints used in conjunction with gears of various shapes and sizes. Large operating air gaps achieved through use of gain The device incorporates a dual element Hall IC that switches adjust and offset adjust circuitry in response to differential magnetic signals created by a ferro- Defined power-on state (POS) magnetic target. The IC contains a sophisticated compensating Wide operating voltage range circuit designed to eliminate the detrimental effects of magnet Digital output representing target profile and system offsets. Digital processing of the analog signal Single chip sensing IC for high reliability provides zero-speed performance independent of air gap and Small mechanical size also dynamic adaptation of device performance to the typical Optimized Hall IC magnetic system operating conditions found in automotive applications (reduced Fast start-up vibration sensitivity). High-resolution peak detecting DACs Undervoltage lockout (UVLO) are used to set the adaptive switching thresholds of the device. Package: 4-pin SIP (suffix SG) Hysteresis in the thresholds reduces the negative effects of any anomalies in the magnetic signal associated with the targets used in many automotive applications. The ATS667 is optimized for transmission applications. It is available in a lead (Pb) free 4-pin SIP package with a 100% matte tin plated leadframe. Not to scale Functional Block Diagram VCC Voltage Regulator Threshold Comparator Automatic Gain PDAC Control PThresh V PROC Offset Threshold Hall Reference Amp Adjust Logic Generator NThresh NDAC TEST VOUT Current Output Limit Transistor GND ATS667-DS, Rev. 5ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Selection Guide Part Number Packing* ATS667LSGTN-T 13-in. reel, 800 pieces/reel *Contact Allegro for additional packing options Absolute Maximum Ratings Characteristic Symbol Notes Rating Unit Supply Voltage V See Power Derating section 26.5 V CC Reverse Supply Voltage V 18 V RCC Reverse Supply Current I 50 mA RCC Reverse Output Voltage V 0.5 V ROUT Output Sink Current I 25 mA OUT Operating Ambient Temperature T Range L 40 to 150 C A Maximum Junction Temperature T (max) 165 C J Storage Temperature T 65 to 170 C stg Pin-out Diagram Terminal List Number Name Function 1 VCC Supply voltage 2 VOUT Device output 1243 3 TEST Tie to GND or float 4 GND Ground Allegro MicroSystems, LLC 2 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com