The TSOP75D26 and the TSOP35D26 are the first surface-mount IR receivers designed to be assembled into active 3D glasses, where they receive infrared signals from the TV set and ensure the glasses” LCD shutters open and close in proper synchronization to create the 3D effect. With these industry-standard receivers, TV manufacturers can now reduce the cost of the active 3D glasses, one of the main barriers to broader adoption of 3D TVs. With adoption of the CEA-2038 standard and use of the TSOP75- and TSOP35D26 receivers, consumers will be able to watch 3D programs on any TV set.
Per the standard, the receivers are designed to operate on a carrier frequency of 26.2 kHz, which is lower than that used by standard remote control systems and thus helps avoid possible interference from TV and set-top box remote controls. The receivers are also designed to receive the 3D synchronization signals from an 830 nm emitter, further avoiding the possibility of interference. They are compliant with the standard”s long encoding command sequence, which features better immunity in noisy environments. Like all of Vishay”s IR receivers, both devices feature suppression of optical noise from compact fluorescent lights, LCD backlights, and plasma panels.
The TSOP75D26 and TSOP35D26 integrate a photodiode, amplifier, automatic gain control, band pass filter, demodulator, and control IC into a single tiny package that helps minimize the weight of 3D glasses, and their ultra-low current consumption maximizes the battery life. Both are surface-mount devices that can be mounted in a side or top view. They have a viewing angle of ± 50° that allows for significant head movement without signal loss. The TSOP75D26 measures 2.3 mm x 3.0 mm x 6.8 mm and has dual lenses while the TSOP35D26 measures 4.0 mm x 5.3 mm x 7.5 mm and has a single lens.