RedRock® RR142 Series TMR Multi-Channel Magnetic Switch Sensors

Coto Technology’s RedRock RR142 series of multi-channel magnetic sensors with multiple output options are ideal for use in medical, industrial, automotive, and consumer applications. The RR142 series features a dual-channel, single-chip solution for battery-powered applications where the digital output channel is used to magnetically activate the system and the analog output channel can then be used to sense magnet displacement. In these applications, the RR142 saves power, space, cost, design time, and effort compared to discreet solutions.

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 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 provides an output signal until the sensor is reset  (V_DD is < V_{UVLO - FALL}). This is particularly ideal for battery-powered, high-precision level, and proximity sensing.