AMS recently introduced new proximity sensor, TMD2620, and a combined proximity and ambient light sensor, TMD2725. These sensors reduce the sensor aperture in the smartphone display’s cover glass by as much as 50%. The two sensors TMD2620 and TMD2725 enable aperture size to be as small as 1.4 and 2.0mm respectively.
TMD2620 has a small footprint and low profile package of 3.10mm x 2.05mm x 1.00mm. The device is an advanced proximity sensor. It can reduce board space requirements and lower power consumption. TMD2725 has a footprint of 2mm x 3.65mm x 1mm and it meets all small aperture requirements. The device has advantages of accurate ambient light sensing and reduced power consumption.
The two devices feature a breakthrough in optical module packaging which allows the emitter and photodiode to be placed just 1.0mm apart. And the design and offset adjustment minimize the crosstalk between emitter and sensor. The devices also allow to measure up to a range of 100mm, comparable to laser-based solutions.
“Until now, inability to overcome the effects of optical crosstalk have prevented android phone manufacturers from reducing proximity sensing apertures below 3.0mm”, said Herbert Truppe, Senior Marketing Manager at AMS. “Now the TMD2620 and TMD2725 overcome those challenges and enable a smaller aperture than has previously been possible.”
The TMD2620 and TMD2725 are now in volume production with unit price of $0.36 for TMD2620 and $0.43 for TMD2725 in order quantities of 1,000.
More information can be found at: AMS.