VG481V1 Back Biased Hall-effect Speed Sensor Integrated Circuit (IC) DESCRIPTION VALUE TO CUSTOMERS The VG481V1 contains a dual peak Uses a dual peak detecting circuit detecting circuit that is coupled with a derived from the stored peak and Hall-effect element to detect the speed valley values. This provides zero speed of a ferrous gear tooth target wheel. A capability and more accurately tracks biasing magnet provides a changing targets that exhibit run-out and other magnetic field as the target wheel variations. moves past the senor IC. The sensor IC AEC-Q100 qualified and often suitable functions in reference to peak and slot for automotive applications. magnetic levels. The sensor IC output is Provides higher accuracy. in either a high state or a low state, which POTENTIAL APPLICATIONS FEATURES corresponds to the target tooth/slot Transportation: Transmission speed Back-biased speed sensor IC features. The VG481V1 IC consists of a sensing Zero-speed capable voltage regulator, clock/oscillator, Hall- General speed sensing Low cost and easy to use element, amplifier, internal peak/valley 4 V to 24 V supply voltage range track and hold circuits, comparator, and -40C to 150C operating temperature open collector output stage. The sensor range IC is protected from abnormal operation Open collector output rated for 20 mA at low voltage by a power-on rest circuit. Output short circuit protection The output circuitry contains short Reverse voltage protected circuit protection. The voltage regulator Qualified to AEC-Q100 (Grade 0) contains reverse connection protection. The slicing level is derived from the stored peak and valley values. A start-up algorithm holds the output state until PORTFOLIO the slicing level has reached a stable The Honeywell VG481V1 position. The VG481V1 is zero speed Speed Sensor IC joins the following capable after initial startup as long as related products: VM721V1, VM721D1, power is applied. The VG481V1 IC is VF401, VF526DT. To view the entire offered in flat TO-92-style package with product portfolio, click here. straight leads in bulk packaging which allows for a compact PC board layout. DIFFERENTIATION Provides lesser operate point variation.BACK-BIASED HALL-EFFECT SPEED SENSOR INTEGRATED CIRCUIT ICS VG481V1 TABLE 1. ELECTRICAL SPECIFICATIONS (AT 4.0 V V 24 V, -40C T 150C, UNLESS OTHERWISE SPECIFIED) S A CHARACTERISTIC CONDITION MIN. TYP. MAX. UNIT Supply voltage Pin 2 referenced to Pin 1 4 14 24 V Reverse supply voltage current < 10 mA -26 V Supply current V = 24 V, with ON state 10 mA supply Startup time V = 4 V 10 ms supply Output short circuit short load 10 s Output leakage current V = 24 V, with OFF state 10 A supply Output current (sinking) continuous operation (recommended) 5 mA Output saturation voltage sinking 20 mA 360 mV Switching frequency: s rise time V = 12 V, R =2 kOhm C = 20 pF 10 CC L L s fall time V = 12 V, R =2 kOhm C = 20 pF 1 CC L L 1 Power up ramp time 0 V to 4 V, power up in high state 1 ms 1 If the power up ramp time from 0 V to 4 V is greater than 1 ms, proper IC functionality cannot be guaranteed. TABLE 2. MAGNETIC SPECIFICATIONS CHARACTERISTIC CONDITION MIN. TYP. MAX. UNIT Back bias range South pole facing back of package 500 4000 Gauss Peak magnetic field for linear operation 4500 Gauss Switching differential 25C 5 Gauss Minimum signal lockout peak to valley difference 38.5 Gauss Magnetic signal continuous operation (recommended) 75 Gauss Output signal frequency 0 27.5 10000 Hz Die placement tolerance X and Y -0.07 0.07 mm TABLE 3. ENVIRONMENTAL SPECIFICATIONS CHARACTERISTIC CONDITION MIN. TYP. MAX. UNIT ESD (HBM) JEDEC JS-001 8 kV TABLE 4. ABSOLUTE MAXIMUM RATINGS CHARACTERISTIC CONDITION MIN. TYP. MAX. UNIT Operating temperature ambient -40 150 C Storage temperature ambient, unbiased -55 150 C Soldering temperature applied for <10 s 265 C Output current (sinking) open collector 20 mA Forward supply voltage dc voltage for 1 hour 26 V Reverse supply voltage dc voltage for 1 hour -26 V CAUTION NOTICE ELECTROSTATIC SENSITIVE Absolute maximum ratings are the extreme limits the device will momentarily withstand DEVICES without damage to the device. Electrical and mechanical characteristics are not guaranteed DO NOT OPEN OR HANDLE EXCEPT AT A STATIC FREE WORKSTATION if the rated voltage and/or currents are exceeded, nor will the device necessarily operate at ESD SENSITIVITY: absolute maximum ratings. CLASS 3 2 Sensing and Internet of Things