TMR Digital Push-Pull Magnetic Sensor

The RedRock™ RR122-1A22/1A23 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 RR122-1A22/1A23 series features a typical operate sensitivity of 9 G (0.9mT), with an omnipolar 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 135nA (at 3V and operating at 10Hz), and are available with operating temperature ranges of -40°C to +85°C (RR122-1A22-511 & RR122-1A22-512) or -40°C to +125°C (RR122-1A23-511 & RR122-1A23-512). These sensors are ideal for use in medical, industrial, automotive, and consumer applications. All of the RR122-1A22/1A23 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 9 G (typical)
• Average supply current of 135nA at 3V (typical)
• Supply voltage range of 1.7V to 5.5V
• Omnipolar push-pull response
• Operating frequency of 10Hz
• Temperature range of -40° to +85° (RR122-1A22-511/512)
• Temperature range of -40°C to +125°C (RR122-1A23-511/512)
• Hysteresis (B_HYST)² of 4G (typical)
• SOT-23-3 (511) or LGA-4 (512) package

Approvals for the Coto Technology RR122-1A22/1A23 Series include:

• RoHS
• REACH

Typical applications for the Coto Technology RR122-1A22/1A23 Series include:

• Proximity Detection
• Rotary Sensing
• Fluid Level Detection
• Door & Lid Closure Detection
• Utility Meters
• Portable Medical Devices
• Motor Controllers
• Consumer Electronics
• Wake-Up Microprocessor

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.