RedRock® RR142-1LD2-542/545 & RR142-1LD3-542/545 TMR Digital + Analog Multi-Channel Sensor

The RedRock® RR142-1LD2-542/545 and RR142-1LD3-542/545 are multi-channel magnetic sensors with multiple output options ideal for use in medical, industrial, automotive, and consumer applications. Based on patented Tunneling Magnetoresistance (TMR) technology with seamless CMOS integration, the RR142 offers multiple configurations of several parameters to enable applications like proximity sensing, rotary sensing, and level detection.

The RR142-1LD2-542/545 and RR142-1LD3-542/545 feature both digi­tal and analog channels. The RR142 offers an innovative new option to meet the needs of next generation applications. For “wake-up” applications, the analog output functionally is kept inactive until the sensor detects the removal of a nearby magnetic field (B < Brp). Once awakened, the analog circuitry stays on and continues to provide an output signal until sensor is reset (VDD is < VUVLO – FALL). This is particu­larly ideal for battery-powered, high-precision level and proximity sensing.

The digital channel features an operate sensitivity of 60 G (6 mT) with omnipolar magnetic field response. The analog channel offers a lin­ear voltage output with a wide magnetic sensitivity range from -80 G to +80 G with a sensitivity of 5 mV/V/G. It offers a wide supply voltage range from 1.7 up to 5.5 V, ideal for applications ranging from small battery-powered electronics to industrial machinery. When in digital only mode, the RR142 operates at 12Hz until the analog channel is activated, at which point the operating frequency is increased to 100Hz. When operating in digital only mode, it has the world’s low­est current drain (150nA) for an active magnetic sensor operating at 12Hz. When in Digital+Analog mode, it has a current drain of 1.2 μA. The device has a wide operating temperature range of -40°C to 85°C (RR142-1LD2-542/545) or -40ºC to 125ºC (RR142-1LD3-532/545).  (See Datasheet)

RR142-1LD2-542/545 & RR142-1LD3-542/545 Series Features

  • Multi channel Outputs: Digital & Analog
  • Operate sensitivity of 60 G
  • Linear Analog Sensitivity Range from -80 G to +80 G
  • Wide Supply Voltage range of 1.7V – 5.5V
  • Lowest Average Current: 150 nA (Digital only mode), 1.2 μA (Digital+Analog mode)
  • Omnipolar Push-Pull Response for the Digital Output
  • Linear Analog Voltage Response for the Analog Output
  • Digital Only Mode Frequency of 12 Hz
  • Digital + AnalogMode Frequency of 100 Hz
  • Temperature Rated up to 125°C
  • RoHS & REACH Compliant


  • Proximity Detection
  • Rotary Sensing
  • Fluid Level Detection
  • Door & Lid Closure Detection
  • Utility Meters
  • Portable Medical Devices
  • Motor Controllers
  • Consumer Electronics
  • Wake-Up μProcessor
RedRock SOT-5 and LGA Packages

RR142-1LD2-542/545 & RR142-1LD3-542/545 SERIES DIMENSION

In Millimeters (Inches)
  • RedRock SOT-5 and LGA Dimensions
RedRock 142-1LD2 chart

RR142-1LD2-542/545 & RR142-1LD3-542/545 SERIES TECHNICAL INFORMATION

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