TMR Digital Push-Pull Magnetic Sensor

The RedRock™ RR122-3C72/3C73 sensor series from Coto Technology is a range of digital push-pull magnetic sensors designed using a patented Tunneling Magnetoresistance (TMR) technology with seamless CMOS integration. The RR122-3C72/3C73 series features a typical operate sensitivity of 10 G (1.0 mT), with a latching bipolar magnetic field response. They offer a wide supply voltage range from 1.7V to 5.5V, ideal for applications ranging from small battery-powered electronics to industrial machinery. The TMR sensors have a typical current drain of 11μA (at 3V and operating at 2500Hz) and are available with operating temperature ranges of -40°C to +85°C (RR122-3C72-511 & RR122-3C72-512) or -40°C to +125°C (RR122-3C73-511 & RR122-3C73-512). These sensors are ideal for use in medical, industrial, automotive, and consumer applications. All of the RR122-3C72/3C73 series is available in either SOT-23-3 (511 variant) or LGA-4 packages (512 variant).

• TMR digital push-pull magnetic sensor
• Operate sensitivity of 10 G (typical)
• Release sensitivity of -10 G (typical)
• Average supply current of 11μA at 3V (typical)
• Supply voltage range of 1.7V to 5.5V
• Bipolar Latching Push-Pull Response
• Operating frequency of 2500Hz
• Temperature range of -40° to +85° (RR122-3C72-511/512)
• Temperature range of -40°C to +125°C (RR122-3C73-511/512)
• SOT-23-3 (511) or LGA-4 (512) package

Approvals for the Coto Technology RR122-3C72/3C73 Series include:

• RoHS
• REACH

Typical applications for the Coto Technology RR122-3C72/3C73 Series include:

• Proximity Detection
• Rotary Sensing
• Linear Position Sensing
• Utility Meters
• Motor Controllers
• Consumer Electronics

Coto is a worldwide market leader of small signal-switching products sold into the Automatic Test Equipment, Data Acquisition, Instrumentation, Process Control, Telecommunications, Medical and Security markets. Coto specialises in the manufacture of relay, switch and sensor products. Coto are the pioneers of the RedRock® analog and digital TMR magnetic sensors, offering the lowest power consumption, highest sensitivity, ultra-miniature package size, short lead times and a highly-competitive price. Please visit https://cotorelay.com/ for more information.