RedRock® RR112 Series TMR Low-Power Magnetic Switch Sensor
Coto Technology’s RedRock RR112 series TMR ultra-low-power magnetic switch sensor features high sensitivity and miniature size
Coto Technology's RedRock RR112 series of analog, TMR, low-power magnetic switch sensors are ideally suited to the demands of next generation security, metering, medical, automotive, instrumentation, and industrial markets. Due to their ultra-low power (essential in battery-powered applications), high sensitivity, miniature size, robustness, and availability, TMR sensors are now a popular alternative to both Hall effect sensors and reed switches.
Based on patented tunneling magnetoresistance (TMR) technology with seamless CMOS integration, the RedRock RR112 series incorporates analog magnetic sensors with proportional linear voltage output ideal for use in medical, industrial, automotive, and consumer applications. The RR112 series offers multiple configurations of several parameters to enable applications such as proximity sensing, rotary sensing, and level detection.
The RR112 series features a magnetic field range from -80 G to +80 G with a typical sensitivity of 5 mV/V/G. It is rated to operate across a wide temperature range of -40°C up to +125°C, and it offers a wide supply voltage range from 1.7 V up to 5.5 V, ideal for applications ranging from small battery-powered electronics to industrial machinery. The series offers ultra-low power consumption of less than 1.2 μA and an operating frequency of 100 Hz. Target applications include proximity detection, rotary sensing, fluid level detection, door, window, or lid open-close detection, water and gas meters, portable medical devices, consumer electronics, and IoT devices.
- Ultra-low power consumption (<1.2 μA)
- Operate sensitivity range from -80 G to +80 G
- Wide supply voltage range of 1.7 V to 5.5 V
- Linear analog voltage response
- Resistant to mechanical stress
- Operating frequencies of 100 Hz
- Temperature rated up to +125°C
- Tiny size
- REACH compliant
- RoHS compliant
- Door or lid closure detection
- Smartphones, tablets, and laptops
- Proximity detection
- Contactless sensing
- Portable medical devices
- IoT devices
- Liquid level sensing
- Position sensing
- Anti-tamper sensing
- Speed and rotation sensing
- Water, electric, and gas meters
- Consumer electronics
Application Notes
- Driving High Current with TMR Magnetic Sensors
- How to Power on a Battery-Operated Medical or IoT Device
- How to Pair a Magnetic Sensor with the Right Magnet for a Cost-Effective Solution
- Magnetic Sensing for Open and Anti-Tamper Detection
- Modernizing Security Systems with TMR
- Using RedRock® TMR Magnetic Sensors for Speed and Direction Estimation in Rotating Systems
- Extending Battery Life and Improving Metering Device Performance
- How to Overcome Battery Life Anxiety When Using Active Magnetic Sensors
- A 3-to-2 Wire Conversion Circuit for a RedRock® TMR Magnetic Sensor
RedRock® RR112 TMR Sensors and Switch
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 |  | RR112-1G42-532 | SEN MR ANALOG VOLTAGE 4-LGA | 0 - Immediate | View Details for Pricing | View Details |
|  | RR112-1G42-531 | SEN MR ANALOG VOLTAGE SOT-23-3 | 0 - Immediate | View Details for Pricing | View Details |
| | RR112-1G43-531 | SEN MR ANALOG VOLTAGE SOT-23-3 | 0 - Immediate | $0.92 | View Details |
| | RR112-1G43-532 | SEN MR ANALOG VOLTAGE 4-LGA | 0 - Immediate | $0.45 | View Details |
