A1366LKTTN-10-T

• Product introduction

A1366LKTTN-10-TLow noise, high accuracy, factory programmed linear Hall-effect sensor with advanced temperature compensation and high bandwidth (120 kHz) analog output

The Allegro™ A1366 factory-programmed linear Hall-effect current sensor IC is designed for high accuracy and resolution. This is achieved by using a new proprietary linear interpolation temperature compensation technique that achieves nearly smooth sensitivity and offset over the entire operating temperature range programmed at the Allegro factory. This IC maintains smooth performance that does not change with temperature, making it ideal for current sensing applications. Temperature compensation is done within the digital domain using integrated EEPROM technology without sacrificing analog signal path bandwidth, making the device ideal for HEV inverters, DC-to-DC converters, and electric power steering (EPS) applications.

This proportional Hall-effect sensor IC provides a voltage output proportional to the applied magnetic field. The sensitivity and quiescent (zero magnetic field) output voltage are factory programmed using high resolution, providing typical accuracy of less than ±1% over temperature.

The sensor IC contains a highly sensitive Hall element with a BiCMOS interface IC that uses a low-noise, small-signal, high-gain amplifier, a low-impedance output stage, and a high-bandwidth dynamic offset cancellation proprietary technique. Bringing these Hall-effect technology advancements together to deliver industry-leading sensing resolution at the full 120 kHz bandwidth. The device has built-in ground break detection for high reliability in automotive applications.

The device parameters fit a wider ambient temperature range: –40°C to 150°C. The A1366 sensor IC is available in an ultra-thin (1 mm thick) 4-pin SIP (Single In-line Package Suffix KT) that is Pb-free with 100% matte tin leadframe plating.

• Use high resolution to program sensitivity and quiescent output voltages at the factory
• Proprietary piecewise linear interpolation temperature compensation (TC) technology provides typical accuracy (1%) over the entire operating temperature range
• Very low noise and high resolution are achieved through proprietary Hall elements and low-noise amplifier circuitry
• A nominal bandwidth of 120 kHz is achieved through proprietary packaging and chopper stabilization techniques
• Patented circuitry suppresses IC output spikes during fast circuit step inputs
• Open wire detection (broken wire) on ground pin
• V_CC Undervoltage lockout below the specified value
• Proportional sensitivity and quiescent voltage output
• Precise recoverability after temperature cycling
• Wide ambient temperature range: –40°C to 150°C
• Resistant to mechanical stress
• Ultra-thin package: 1 mm box thickness
• AEC Q-100 Automotive Grade
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