A1343 High-Precision, Highly Programmable Linear Hall-Effect Sensor IC with EEPROM, Output Protocols SENT and PWM, and Advanced Output Linearization
■The A1343 device is a high-precision, programmable Hall-effect linear sensor integrated circuit (IC) with an open-drain output, configurable as pulse-width modulated (PWM) or single edge nibble transmission (SENT), for both automotive and nonautomotive applications. The signal path of the A1343 provides flexibility through external programming that allows the generation of an accurate and customized output voltage from an input magnetic signal. The A1343 provides 12bits of output resolution, and supports a maximum bandwidth of 3kHz.
■The BiCMOS, monolithic integrated circuit incorporates a Hall sensor element, precision temperature-compensating circuitry to reduce the intrinsic sensitivity and offset drift of the Hall element, a small-signal high-gain amplifier, proprietary dynamic offset cancellation circuits, and advanced output linearization circuitry.
■With on-board EEPROM and advanced signal processing functions, the A1343 provides an unmatched level of customer reprogrammable options for characteristics such as gain and offset, bandwidth, output clamps, and magnetic range selection. In addition, the device supports separate hot and cold, 1st- and 2nd-order temperature compensation.
■A key feature of the A1343 is its ability to produce a highly linear device output for nonlinear input magnetic fields. To achieve this, the device divides the output into 32 equal segments and applies a unique linearization coefficient factor to each segment. Linearization coefficients are stored in a lookup table in EEPROM.
■The A1343 is available in a lead (Pb) free 8-pin TSSOP package (LE suffix), with 100% matte-tin leadframe plating.
●FEATURES AND BENEFITS
■Advanced 32-segment output linearization functionality enables high output accuracy and linearity in the presence of nonlinear input magnetic fields
■Selectable digital SENT (Single Edge Nibble Transmission) and PWM (Pulse-Width Modulation) output
■SENT output supports two modes: SAEJ2716 JAN2010 and Allegro Proprietary with Enhanced Programmable Features
■Customer-programmable magnetic range selection and offset, sensitivity, bandwidth, output clamps, 1st- and 2nd-order temperature compensation
■Simultaneous programming of all parameters for accurate and efficient system optimization with onboard EEPROM capable of supporting up to 100 read/write cycles
■Initial sensitivity temperature coefficient and magnetic offset drift preset at Allegro, for maximum device accuracy without requiring customer temperature testing
■Temperature-stable, mechanical stress immune, and extremely low noise device output via proprietary four-phase chopper stabilization and differential circuit design techniques
■Wide ambient temperature range: –40°C to 150°C
■Operates with 4.5 to 5.5V supply voltage
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Highly Programmable Linear Hall-Effect Sensor IC 、 high-precision, programmable Hall-effect linear sensor integrated circuit (IC) |
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Datasheet |
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Please see the document for details |
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TSSOP |
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English Chinese Chinese and English Japanese |
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October 22, 2019 |
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Rev. 10 |
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A1343-DS |
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2.2 MB |
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