ALLEGRO A1363LKTTN-1-T

The A1363 programmable linear Hall- effect current sensor IC has been designed to achieve high accuracy and resolution without compromising bandwidth. The goal is achieved through new proprietary linearly interpolated temperature compensation technology that is programmed at the factory and provides sensitivity and offset that are virtually flat across the full operating temperature range. Temperature compensation is done in the digital domain with integrated EEPROM technology, without sacrificing the analog signal path 120kHz bandwidth, making this device ideal for HEV inverter, DC- to- DC converter, and electric power steering (EPS) applications.

This ratiometric Hall- effect sensor IC provides a voltage output that is proportional to the applied magnetic field. The customer can configure the sensitivity and quiescent (zero field) output voltage through programming on the VCC and output pins, to optimize performance in the end application. The quiescent output voltage is user- adjustable around 50% of the supply voltage, VCC, and the output sensitivity is adjustable within the range of 0.6 to 14mV / G.

The sensor IC incorporates a highly sensitive Hall element with a BiCMOS interface integrated circuit that employs a low noise small- signal high- gain amplifier, a clamped low- impedance output stage, and a proprietary, high bandwidth dynamic offset cancellation technique. These advances in Hall- effect technology work together to provide an industry leading sensing resolution at the full 120kHz bandwidth. Broken ground wire detection as well as user- selectable output voltage clamps also are built into this device, for high reliability in automotive applications.

Device parameters are specified across an extended ambient temperature range: - 40°C to 150°C. The A1363 sensor IC is provided in an extremely thin case (1mm thick), 4- pin SIP (single in- line package, suffix KT) that is lead (Pb) free, with 100% matte tin lead frame plating.

• Proprietary segmented linear interpolated temperature compensation (TC) technology provides a typical accuracy of 1% across the full operating temperature range
• Customer-programmable, high resolution offset and sensitivity trim
• Factory-programmed sensitivity and quiescent output voltage TC with extremely stable temperature performance
• High sensitivity Hall element for maximum accuracy
• Extremely low noise and high resolution achieved via proprietary Hall element and low noise amplifier circuits
• 120kHz nominal bandwidth achieved via proprietary packaging and chopper stabilization techniques
• Patented circuits suppress IC output spiking during fast current step inputs
• Open circuit detection on ground pin (broken wire)
• Undervoltage lockout for VCC below specification
• Selectable sensitivity range between 0.6 and 14mV / G through use of coarse sensitivity programming bits
• Ratiometric sensitivity, quiescent voltage output, and clamps for interfacing with application A- to- D converter (ADC)
• Precise recoverability after temperature cycling
• Output voltage clamps provide short circuit diagnostic capabilities
• Wide ambient temperature range: - 40°C to 150°C
• Immune to mechanical stress
• Extremely thin package: 1mm case thickness
• AEC- Q100 automotive qualified

• HEV inverter
• DC- to- DC converter
• electric power steering (EPS)