Coto RR121-3C73-311

Coto RR121-3C73-311

The RedRock™ RR121-3C73-311 is a magnetic sensor with digital logic output from Coto. It features an operating sensitivity of -10G with an bipolar magnetic field response all with a supply voltage of 3Vdd (typical), an average supply current drain of 8µA, 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 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 -10G (typically)
  • Release sensitivity of 10G (typically)
  • Frequency of 2500Hz
  • Temperature range of -40°C to +125°C
  • Average supply current (Iavg) 8µA
  • Supply voltage 3Vdd (typically)
  • SOT-23-3 package
  • Bipolar 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 RR121-3C73-311 magnetic sensor:

Coto RR121-3C73-311 Specifications 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
Additional Features
  • Magnetic sensor with digital logic output
  • Frequency 500Hz
  • Supply voltage range between +2.7Vdd to +3.6Vdd
  • Output response - Active Low
  • SOT-23-3 package
  • Omnipolar magnetic polarity response
  • RoHS and REACH compliant
Average Supply Current 8µA
Operate Sensitivity -10G (typically)
Operating Temperature −40°C to +125°C
Release Sensitivity Typically 10G (BHYST)

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:

 

 

DOCUMENTATION
PDF Document Coto RedRock™ RR121 TMR sensor series datasheet
PDF Document Coto Technology sensors and switches product sheet
PDF Document Coto RedRock™ TMR magnetic sensor product catalogue
PDF Document Coto Technology reed relay and reed switch selector charts
PDF Document CotoMOS® MOSFET relay selector chart
White Papers
PDF Document Testing reed relays and reed switches for reliability white paper
PDF Document Life expectancy for reed relays in high temperature environments white paper
Application Notes - TMR Sensors
PDF Document The importance of magnet protection within harsh environments application note
PDF Document Interfacing the Coto Technology RedRock™ RR110 to an ADC using a low power analog interface circuit application note
PDF Document Ready for take-off using the RedRock™ RR130 in wildlife tracking devices application note
PDF Document Size matters in capsule endoscopy application note
PDF Document The evolution of magnetic sensing technology: from hall effect to tunneling magnetoresistance (TMR) application note
PDF Document Using RedRock™ TMR magnetic sensors RR121 for speed and direction estimation in rotating systems application note
PDF Document Improving a simple 3-wire level sensor assembly by using the RedRock™ RR131 TMR digital switch application note
PDF Document Modernising security systems with TMR for higher reliability, wider sensing range and long battery life application note
PDF Document How to replace a 2-wire reed switch with a 3-wire sensor application note
Application Notes - CotoMOS® MOSFETs
PDF Document CotoMOS® technical and applications information application note
PDF Document Applications of small signal relays in photovoltaic inverters application note
PDF Document Increasing the ampacity of the CotoMOS® CS128 opto-isolated SSR by parallel operation application note
PDF Document Output muting in headphone amplifiers and portable speakers with negligible harmonic distortion using CotoMOS® relays application note
PDF Document Dual-rail battery switching using CotoMOS® relays in portable headphone amplifiers and portable powered speakers application note
PDF Document RR110 ultra low power 'wake up' application note
PDF Document How to increase your current capacity of 6-pin CotoMOS® solid state MOSFET relays by up to 100% application note
Application Notes - Classic Reed Relays
PDF Document Reed relays technical and application information application note
PDF Document Applications of small signal relays in photovoltaic inverters application note
PDF Document If it ain't broke fix it application note
PDF Document Leadform follows function in RF reed relay design application note
PDF Document The heat is on when you test at 125°C (2970 Series) application note
PDF Document Optimising cable tester switching architecture using the Coto Technology 9104-0022 high voltage reed relay application note
PDF Document Best practices for applying Coto Technology's 9852 Form C reed relay application note
PDF Document Coto Technology's 9814 reed relay application note
Application Notes - Classic Reed Switches
PDF Document Reed switches technical and applications information application note
PDF Document Reliable reed switching best practices for normally closed applications application note
PDF Document Nobody said designing utility meters was easy application note
PDF Document Rules of attraction for reliable reed switch-magnet applications application note
PDF Document Liquid level sensing using reed switch technology application note
PDF Document Liquid level sensing using reed switch technology application note (detailed)
PDF Document The importance of magnet protection within harsh environments application note
PDF Document Reed switch life characteristics under different levels of capacitive loading application note
PDF Document Coto DYAD switch contact style application note
PDF Document CT10-G4's rugged lead-frame design is a feature and a benefit application note

We are pleased to provide you with a range of videos, please see below for the latest content available:

 

 

VIDEOS
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.
Overview - RedRock® gen 2.0 demo board

Coto Technology Applications Engineer, Tony Parakka, provides a peek at Coto’s newest 2.0 Generation demo board featuring RedRock TMR magnetic sensor products: RR111 (Analog Output); RR120 (Digital Unipolar Sensor); RR121 (Bipolar Digital Latching) and RR121 (Digital Omnipolar ). This video serves as a basic overview of the different products. Engineers can opt to see more in-depth, functional discussions on each individual product in Coto’s new 4-video series of engineering discussions.
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 1.4x1.4x0.45mm) with smaller options also available on request.
VIDEOS
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>Overview - RedRock® gen 2.0 demo board

Coto Technology Applications Engineer, Tony Parakka, provides a peek at Coto’s newest 2.0 Generation demo board featuring RedRock TMR magnetic sensor products: RR111 (Analog Output); RR120 (Digital Unipolar Sensor); RR121 (Bipolar Digital Latching) and RR121 (Digital Omnipolar ). This video serves as a basic overview of the different products. Engineers can opt to see more in-depth, functional discussions on each individual product in Coto’s new 4-video series of Engineering Discussions.
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 1.4x1.4x0.45mm) with smaller options also available on request.

This product is available fully compliant to the RoHS EU directive 2011/65/EU.

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  • Product Code: Coto RR121-3C73-311
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