AMS reduces aperture size for ALS, proximity sensors

July 20, 2016 // By Peter Clarke
AMS AG (Premstaetten, Austria) has introduced the TMD2620 proximity sensor and the TMD2725 ambient light sensor which can cope with 50 percent smaller smart phone apertures than previously required, the company said.

The TMD2620 and TMD2725 enable aperture size as small as 1.4 and 2.0mm respectively. The packaging of the TMD2620 and TMD2725 allows the emitter – an infrared LED – and photodiode to be placed just 1.0mm apart. Lenses on top of the emitter and sensor along with an optical barrier between them help to minimize crosstalk. Automatic ambient light subtraction further enhances the accuracy of the device’s proximity measurements. The ability to measure up to a range of 100mm is comparable to laser-based solutions.

The TMD2620 and TMD2725 are in volume production and unit pricing in order quantities of 1,000 is $0.36 for the TMD2620, and $0.43 for the TMD2725. 

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