TMR1148
Description
TMR1148 is a unipolar magnetic switch integrated the tunneling magnetoresistance (TMR) magnetic sensor and CMOS circuitry, which is able to detect the change of magnetic field and output high and low voltage signals for high accuracy position detection.
Unlike Hall/AMR sensors, TMR sensors with extremely high resistance values allows TMR1148 to achieve the supply current as low as 1.5 μA while operating in the full-time power supply mode, and maintaining the response frequency of the magnetic signal is 1 k Hz. Therefore, TMR1148 can provide true continuous detection of magnetic field signals, avoiding sampling errors from the traditional time-sharing power supply mode.
SOT23-3
Features and benefits
- - Tunneling magnetoresistance (TMR) technology
- - Low power consumption: supply current 1.5 μA
- - High frequency response: typ. 1 k Hz
- - Unipolar operation
- - Wide range supply voltages: 1.8 V to 5.5 V
- - Open-drain output
- - High sensitivity
- - Excellent temperature stability
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