The RedRock™ RR121-1B53-311 is a magnetic sensor with digital logic output from Coto. It features an operating sensitivity of 30G with an omnipolar magnetic field response all with a supply voltage of 3Vdd (typical), an average supply current drain of 1.44µA, as well as a high operating temperature from −40°C up to +125°C. The RedRock™ RR121 series is ideal for use in medical, industrial, automotive, and consumer applications. Based on patented Tunneling Magnetoresistance (TMR) technology with seamless CMOS integration, the RR121 series offers multiple configurations of several parameters to enable applications like proximity sensing, rotary sensing and level detection.
Magnetic sensor with digital logic output
Operate sensitivity of 30G (typically)
Release sensitivity of 20G (typically)
Hysteresis (BHYST) 10 (typically)
Frequency of 250Hz
Temperature range of -40°C to +125°C
Average supply current (Iavg) 1.44µA
Supply voltage 3Vdd (typically)
SOT-23-3 package
Omnipolar magnetic polarity response
RoHS and REACH compliant
Based on patented Tunnelling Magnetoresistance (TMR) technology with seamless CMOS integration, the RR121 series offers multiple configurations or several parameters to enable applications like:
Proximity detection
Rotary sensing
Motor controllers
Fluid level detection
Utility meters
Consumer electronics
Door and lid closure detection
Portable medical devices
Wake-up microprocessor
The below table gives the full specifications of the Coto RR121-1B53-311 magnetic sensor:
1. Unless otherwise specified, Vdd =2.7V to 3.6V, TA = −40°C to +25°C. Typical values are Vdd = 3V and TA = +125°C.
2. Conditions: t = 10 seconds.
3. Conditions: BHYST = BOP-BRP.
Specifications
Weight
0.00000 kg
Dimensions
2.90 × 2.80 × 1.20 mm
Additional Features
Magnetic sensor with digital logic outputFrequency 250HzSupply voltage range between +2.7Vdd to +3.6VddOutput response – Active LowSOT-23-3 packageOmnipolar magnetic polarity responseRoHS and REACH c
This product is available fully compliant to the RoHS EU directive 2011/65/EU.
Coto RR121-1B53-311 EOL
All RedRock® RR111, RR121 and RR131 TMR Magnetic Sensors are being phased out and replaced by alternate solutions from the RR112, RR122, RR132 and RR142 series’ product offerings. Click here for the full EOL notification.
Last Time Buy: 1st February 2021
Last Time Ship: 1st June 2021
For the RR121-1B53-311, the suggested replacement is the RR122-1B53-511.
Coto RR121 Series Technical Library
We are pleased to provide you with a range of additional content including product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:
We are pleased to provide you with a range of videos, please see below for the latest content available:
VIDEOS
Overview – RedRock® RR1EK3-0002 demo board
The newest RedRock® TMR magnetic sensor demo board validates Coto Technology’s TMR sensors’ sensitivity and performance with magnets and allows engineers to experience TMR technology with 5 sensor types of differing polarity and/or sensitivity. In this video, a Coto Applications Support Engineer will take you for a quick tour.
Coto device simulation and validation services for TMR magnetic sensor integration
Through use of specialised design simulation and validation development services, Coto Technology helps customers to accelerate the effective design & development of magnetically-actuated devices which feature the use of Coto’s TMR magnetic sensors.
Proximity sensing with RedRock® TMR magnetic sensors video
RedRock® TMR magnetic sensors can be used in a wide variety of proximity applications such as detecting the opening/closure of an automatic sliding gate or detecting position of a linear actuator or a conveyor belt. This brief video demonstrates an example using feedback from a TMR sensor to stop a moving motor. Requirements met by the TMR sensors are high reliability, extremely low current drain (which is important if the device is battery powered) and a high level of sensitivity.
Security sensors – Using RedRock® TMR magnetic sensors in security applications video
Security applications use magnetic sensing in their devices to detect the unauthorized opening of a door or window. The main mechanism typically consists of a digital magnetic sensor and a magnet that are close to each other when the door/window is closed. In the event of an intrusion, the magnet moves away from the sensor, an action which is designed to trigger an alarm. While the application is fairly simple, the requirements of the sensor are significant. Featuring RedRock® TMR magnetic sensors’ extremely low power consumption, high sensitivity, ultra-miniature size and high degree of robustness and reliability, this brief video demonstrates TMR to be the ideal solution when used in security devices.
Device "Wake-Up" Sensors – using RedRock® TMR Magnetic Sensors video
To conserve battery power, many devices are kept “asleep” or turned off until the time is right for them to operate. When the device is removed from its enclosure, a sensor is used to trigger its “wake-up.” In this brief video, this function is explained and demonstrated using a RedRock® TMR magnetic sensor within a medical pill camera device which requires the sensor to be tiny, highly sensitive and able to operate within a hermetically-sealed environment while using nearly zero power.
ENGINEERING DISCUSSION: TMR Analog Output Magnetic Sensor [RR111]
The RedRock RR111 is an Analog Output TMR Magnetic Sensor. Tony Parakka (Application Engineer from Coto Technology) provides a whiteboard talk followed by a live demonstration. By an engineer, for an engineer!
ENGINEERING DISCUSSION: RedRock Digital Bipolar Latching Magnetic Sensor [RR121]
Learn more about the RedRock Digital Bipolar Latching TMR Magnetic Sensor. Tony Parakka (Application Engineer from Coto Technology) provides a whiteboard talk followed by a live demonstration. By an engineer, for an engineer!
ENGINEERING DISCUSSION: RedRock Omnipolar TMR Magnetic Sensor [RR121]
Learn more about the RedRock Digital Omnipolar TMR Magnetic Sensor [RR121]. Tony Parakka (Application Engineer from Coto Technology) provides a whiteboard talk followed by a live demonstration. By an engineer, for an engineer!
RedRock TMR Magnetic Sensors Get EVEN SMALLER with LGA-4 Package
Coto Technology is now offering its RedRock TMR magnetic sensor in a tiny LGA-4 package (sized at 1.4×1.4×0.45mm) with smaller options also available on request.
VIDEOS
Overview – RedRock® RR1EK3-0002 demo board
The newest RedRock® TMR magnetic sensor demo board validates Coto Technology’s TMR sensors’ sensitivity and performance with magnets and allows engineers to experience TMR technology with 5 sensor types of differing polarity and/or sensitivity. In this video, a Coto Applications Support Engineer will take you for a quick tour.
Coto device simulation and validation services for TMR magnetic sensor integration
Through use of specialised design simulation and validation development services, Coto Technology helps customers to accelerate the effective design & development of magnetically-actuated devices which feature the use of Coto’s TMR magnetic sensors.
Proximity sensing with RedRock® TMR magnetic sensors video.
RedRock® TMR magnetic sensors can be used in a wide variety of proximity applications such as detecting the opening/closure of an automatic sliding gate or detecting position of a linear actuator or a conveyor belt. This brief video demonstrates an example using feedback from a TMR sensor to stop a moving motor. Requirements met by the TMR sensors are high reliability, extremely low current drain (which is important if the device is battery powered) and a high level of sensitivity.
VIDEOS
Security sensors – Using RedRock® TMR magnetic sensors in security applications video
Security applications use magnetic sensing in their devices to detect the unauthorized opening of a door or window. The main mechanism typically consists of a digital magnetic sensor and a magnet that are close to each other when the door/window is closed. In the event of an intrusion, the magnet moves away from the sensor, an action which is designed to trigger an alarm. While the application is fairly simple, the requirements of the sensor are significant. Featuring RedRock® TMR magnetic sensors’ extremely low power consumption, high sensitivity, ultra-miniature size and high degree of robustness and reliability, this brief video demonstrates TMR to be the ideal solution when used in security devices.
Device "Wake-Up" Sensors – using RedRock® TMR Magnetic Sensors video
To conserve battery power, many devices are kept “asleep” or turned off until the time is right for them to operate. When the device is removed from its enclosure, a sensor is used to trigger its “wake-up.” In this brief video, this function is explained and demonstrated using a RedRock® TMR magnetic sensor within a medical pill camera device which requires the sensor to be tiny, highly sensitive and able to operate within a hermetically-sealed environment while using nearly zero power.
strong>ENGINEERING DISCUSSION: TMR Analog Output Magnetic Sensor [RR111]
The RedRock RR111 is an Analog Output TMR Magnetic Sensor. Tony Parakka (Application Engineer from Coto Technology) provides a whiteboard talk followed by a live demonstration. By an engineer, for an engineer!
ENGINEERING DISCUSSION: RedRock Digital Bipolar Latching Magnetic Sensor [RR121]
Learn more about the RedRock Digital Bipolar Latching TMR Magnetic Sensor. Tony Parakka (Application Engineer from Coto Technology) provides a whiteboard talk followed by a live demonstration. By an engineer, for an engineer!
ENGINEERING DISCUSSION: RedRock Omnipolar TMR Magnetic Sensor [RR121]
Learn more about the RedRock Digital Omnipolar TMR Magnetic Sensor [RR121]. Tony Parakka (Application Engineer from Coto Technology) provides a whiteboard talk followed by a live demonstration. By an engineer, for an engineer!
RedRock TMR Magnetic Sensors Get EVEN SMALLER with LGA-4 Package
Coto Technology is now offering its RedRock TMR magnetic sensor in a tiny LGA-4 package (sized at 1.4×1.4×0.45mm) with smaller options also available on request.
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