The TMAG6184 is a high-precision angle sensor based on the AMR sensor technology vertically integrated on top of the integrated amplifiers on silicon. The differential output sine and cosine signals from the AMR sensor are proportional to the angle of the applied magnetic field. The sine and cosine signals are internally signal conditioned and driven by differential output amplifiers with the ability to drive large capacitive loads. The output voltages of the TMAG6184A AMR sensor is optimized for 60% coverage, which for 5V supply rail translates to 3V peak-to-peak. The TMAG6184B can be operated with a 5V or 3.3V supply and provides a 2V peak-to-peak signal, when operated in single-ended mode.

TMAG6184 integrates X and Y Hall Effect sensors to provide quadrature outputs on pins Q0 and Q1, respectively. The Hall Effect sensors are chopper stabilized, signal conditioned, and multiplexed to provide two digital latched outputs. These outputs can be used to extend the angle sensing range of the AMR sensor from 180 degrees to 360 degrees.

The TMAG6184 contains the following functional and building blocks:

• The Power Management and Oscillators block contains internal regulators, biasing circuitry, a low-frequency, wake-up oscillator and a high-frequency, wake-up oscillator, overvoltage detection circuitry, and undervoltage detection circuitry
• The AMR sensor contains two Wheatstone bridges made of magnetic resistive sensors, each sensing one of the components of the applied magnetic field, the sine and the cosine components.
• The AMR sensing path contains the signal conditioning amplifiers, offset compensation, fixed gain circuitry and the output drivers.
• The Quadrature Detection Path contains the X and Y Hall Effect sensors, related biasing circuitry, signal conditioning, logic comparators and digital logic to drive the Q1 and Q0 outputs
• The Internal memory block supports the factory-programmed values
• The diagnostic blocks support background diagnostic checks of the internal circuitry