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Allegro MicroSystems CT815x Integrated Omnipolar Tunnel Magnetoresistance (TMR) Analog Sensors provide a monolithic solution for superior sensing performance in consumer and industrial applications. The CT815x sensors offer magnetic operation over temperature and linear sample and hold (S&H) analog output voltage with a sampling frequency of 100Hz. For applications that require a very small form factor and low profile, the CT815x sensors are assembled in a 4-lead LGA package. The CT8150 is available in an industry-standard 3-lead SOT-23 package, while the CT8152 is offered in a 5-lead SOT-23 package to support high-volume manufacturing.
The Allegro CT8152 TMR sensors combine both analog and digital outputs in a single chip. The digital output is used to turn on the analog output so that it can remain in an ultra-low power state until the analog mode is enabled. When the BRP is triggered in digital mode, the analog output function will start operating. With power consumption as low as 3µA in analog output mode and 120nA in digital output mode, these devices are ideal for battery-operated products where minimal current consumption is required.
