TSL2672 Digital Proximity Detector The TSL2672 family of devices provides proximity detection General Description when coupled with an external IR LED. The devices incorporate a constant-current LED sink driver to pulse the external IR LED and achieve very low average power consumption using the low-power wait state with programmable wait time between proximity measurements. In addition, the devices are register-set and pin-compatible with the TSL2671 series and include a number of new and improved features, such as improved signal-to-noise and measurement accuracy. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false measurements, a proximity saturation bit indicates that the internal analog circuitry saturated. Interrupts have been enhanced with the addition of a sleep-after-interrupt feature that also allows for single-cycle operation. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of TSL2672, Digital Proximity Detector are listed below: Figure 1: Added Value Of Using TSL2672 Benefits Features Enables Operation in IR Light Environments Patented Dual-Diode Architecture Eliminates IR LED System Cross Talk Programmable Proximity Offset Adjustment Prevents False Proximity Detection in Bright Light Proximity Saturation Indicator Bit Allows Multiple Power-level Selection without Programmable LED Drive Current External Passives Proximity Detection with an Integrated LED Driver in a Single Device Register Set- and Pin-Compatible with the TSL2x71 Series Proximity Detection Reduced Proximity Count Variation Programmable Offset Control Register Saturation Indicator Programmable Analog Gain and Integration Time Current Sink Driver for External IR LED 16,000:1 Dynamic Range ams Datasheet Page 1 v1-01 2019-Nov-20 Document FeedbackT S L2 672 Gen e ra l De s c rip t ion Maskable Proximity Interrupt Programmable Upper and Lower Thresholds with Persistence Filter Power Management Low Power 2.2 A Sleep State with User-Selectable Sleep-After-Interrupt Mode 90 A Wait State with Programmable Wait Time from 2.7 ms to > 8 seconds IC Fast Mode Compatible Interface Data Rates up to 400 kbit/s Input Voltage Levels Compatible with VDD or 1.8-V Bus Small 2 mm x 2 mm ODFN Package Applications TSL2672, Digital Proximity Detector is ideal for: Mobile Handset Touchscreen Control and Automatic Speakerphone Enable Mechanical Switch Replacement Printer Paper Alignment End Products and Market Segments Mobile Handsets, Tablets, Laptops, and HDTVs White Goods Toys Digital Signage Printers Page 2 ams Datasheet Document Feedback v1-01 2019-Nov-20