Sensor module boost to light curtain applications
A series of infrared (IR) sensor modules in five compact package types from Vishay have entered the market.
Featuring a fast 300 microsecond reaction time, Vishay Semiconductors TSSP9xxx AGC 0 devices deliver long range presence and proximity sensing up to 2m, and a range up to 30m for light curtain and perimeter guard applications.
The fixed-gain sensors provide higher interference strength without spurious signals and an output pulse width closer to the optical burst length, claims the company. They offer an almost constant detection threshold over their -25 degrees C to +85 degrees C temperature range and can detect a valid IR signal up to a higher DC illuminance level.
The TSSP9xxx AGC 0 suits fast proximity applications (~15 ms) by using a burst pattern with variable intensity. The devices are suitable for sensing the distance to objects for toys, drones, robots, and vicinity switches. They may also be used as reflective sensors for hand dryers, towel or soap dispensers, water taps, toilets, vending machine fall detection, and security and pet gates.
To simplify designs in these applications, TSSP9xxx series devices feature a PIN photodiode and sensor IC in compact Minimold (TSSP930..), Mold (TSSP940..), Heimdall (TSSP950..), Panhead (TSSP960..), and Minicast (TSSP980..) packages.
The modules operate at a supply voltage range from 2.0V to 3.6V, feature a low supply current of 0.8mA, and offer carrier frequencies of 38 kHz and 56 kHz. The sensors are designed to receive IR pulses from an emitter with a peak wavelength of 940 nm.
The devices are insensitive to supply voltage and ripple noise and provide shielding against EMI, while an IR filter suppresses visible light.
The series is RoHS-compliant and halogen-free.
Samples and production quantities of the new sensors are available now, with lead times of four weeks.
Vishay Intertechnology is a leading manufacturers of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors).