The Crocus CTSR400C series is a family of magnetic switches designed for sensing a wide range of magnetic fields. The advantages of the CTSR400C series include high magnetic sensitivity, no bias current, low power consumption, flexible supply voltage, small form factor, and low cost.
The Crocus series of magnetic switches is composed of multiple magnetic tunnel junctions (MTJs) made of magnetic thin films. The MTJ cell is constructed of two magnetic layers separated by a thin oxide which serves as a tunnel oxide. One of the two magnetic layers has a fixed magnetic orientation and it is called reference layer. The other magnetic layer, called sensing layer, has flexibility of changing orientation in the presence of magnetic field, leading to the change of the sensor resistance. Thus, the sensor acts as a magnetic switch whereby it shows high resistance when magnetic field is absent and low resistance when magnetic field is present.
Crocus magnetic switches provide high stability as well as highly reliable performance over a wide range of operating temperatures and voltage supply.
- High sensitivity
- High temperature operation
- High frequency performance
- High stability
- Low power
- Switching open/close (off/on)
- Proximity switching
- Rotation and speed
- Position sensing
|Pin Name||Pin Number||Note|
|DNU||3||Do not use|
CTSR420C – IS2/Basic Parameters
|Output resistance: ON||Rl||9||10||12||KΩ|
|Output resistance: OFF||Rh||16||20||26||KΩ|
|Operating point (BOP)||5||mT|
|Release point (BRP)||0.5||mT|
|Switching speed: ON||600||ns|
|Switching speed: OFF||600||ns|
|Max. exposed field||1||T|
|Package||SOT23||3 x 2.6||mm|
*Note: This product also works with voltage supply of 1.2V and 3V