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A1696PKHTN-RDBPTYCD Scheda tecnica(PDF) 1 Page - Allegro MicroSystems |
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A1696PKHTN-RDBPTYCD Scheda tecnica(HTML) 1 Page - Allegro MicroSystems |
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1 / 14 page  DESCRIPTION The A1696PKH is a combined Hall-effect sensor IC and EMC protection circuit that provides a user-friendly PCB-less solution for true zero-speed digital crankshaft sensing. The A1696 provides speed and direction information through a variable pulse-width output protocol. The open-drain output provides a voltage output such that the time between falling electrical edges (period) corresponds to the speed, and the time between a falling edge and corresponding rising edge (pulse width) indicates direction. The device can be optimized via programmable options for crankshaft sensing applications and can be used to sense either a ring magnet or a ferromagnetic target (when back-biased with a proper magnet). Three Hall plates are used to create three differential channels. These channels, along with advanced direction detection algorithms, are used to produce a highly accurate output across the full range of air gap and operating temperatures. The combination of high accuracy with direction information provides absolute position on most crank targets in cases of engine backlash, making it ideal for stop/start engine designs. The A1696 is provided in a 3-pin SIP package (KH) that is lead (Pb) free, with 100% tin leadframe plating. A1696PKH-DS, Rev. 3 MCO-0000520 FEATURES AND BENEFITS • Allegro KH package with integrated EMC components reduces need for external EMI protection • Digital output with speed and direction information provides target/ring magnet position information • Enhanced algorithms provide low jitter and high output accuracy performance • Center of package switching alignment • Highly repeatable across operating temperature range • EEPROM programming for performance optimization and production traceability • Electrical offset compensation through chopper stabilization • Zero-crossing switching with internal hysteresis • Robust test coverage capability using Scan Path and IDDQ measurement Position Sensor IC with Speed and Direction Output Figure 1: Functional Block Diagram A1696PKH Not to scale PACKAGE: Current Limit Hall Amp ADC GND Internal Regulator (Analog) VCC Die Package OUT COUT CSUPPLY Internal Regulator (Digital) Hall Amp Low Pass Filter Low Pass Filter ADC EEPROM Synchronous Digital Controller Direction Detection Logic Stop Mode Timer Application Trim Temperature Compensation Temperature Transducer ROUT RSUPPLY January 27, 2022 3-pin SIP (suffix KH) |
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