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 (DVD is < Vuvlo – fall). This is particularly ideal for battery-powered, high-precision level and proximity sensing.
The RR142 offers a wide supply voltage range from 1.7 up to 5.5 V, ideal for applications from small, wearable battery-powered electronics to industrial machinery. The digital channel features an operate sensitivity of 60 G (6 mT) with an omnipolar magnetic field response and an operating frequency of 12Hz. When in Digital Only mode, the RR142 has the world’s lowest current drain (150nA) for an active magnetic sensor operating at that frequency. 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 and an operating frequency of 25Hz. When in Digital+Analog mode, the digital channel continues to operate at 12Hz and the analog channel operates at 25Hz while drawing a total of 1.2 µA. The RR142 has a wide operating temperature range of -40°C to 85°C (RR142-1LD2-542/545) or -40°C to 125°C (RR142-1LD3-542/545). (See Datasheet)