TMD2755
ALS + Proximity Sensor Module
General Description
The TMD2755 features proximity detection and digital ambient light sensing (ALS). The extremely narrow 1. 1mm module incorporates an IR VCSEL and factory calibrated VCSEL driver. The proximity detection feature provides object detection (e. g. mobile device screen to user’s ear) by photodiode detection of reflected IR energy (sourced by the integrated VCSEL). Detect/release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features a wide range offset adjustment to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS and IR photodiodes have dedicated data converters producing 16-bit data. This architecture allows applications to accurately measure ambient light which enables devices to calculate illuminance to control display backlight.
Ordering Information and Content Guide appear at end of datasheet.
Figure 1: Added Value of Using TMD2755
Key Benefits & Features
The benefits and features of TMD2755, ALS + Proximity Sensor Module are listed below:
Benefits
• Optimized for narrow bezel mobile phones • Reduced power consumption
• Enabled superior proximity detection
• Accurate ambient light sensing • Industrial design flexibility
Features
• Small narrow 1. 1mm x 3. 25mm x 0. 60mm module
• 1. 8V power supply with 1. 8V I²C bus • Sleep mode (0. 7μA) • VCSEL IR emitter
• Integrated factory calibrated 940nm IR VCSEL • Crosstalk and ambient light cancellation • Wide configuration range
• High sensitivity • 2 channels (photopic ALS + IR) • Programmable gain and integration time
• Offset emitter/detector package design
ams Datasheet [v2-00] 2021-Sep-10
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Figure 2: Functional Blocks of TMD2755
TMD2755 − General Description
Applications
The TMD2755 applications include: • Mobile phone display management • Mobile phone user p...
TMD2755 PDF File
