TMD26721
Digital proximity detector, LED driver and IR LED in an optical module Vdd I2C interface
Features
- Integrated proximity detection sensor and IR LED
- Patented dual-diode architecture
- Proximity detection calibrated and trimmed to provide consistent reading
- Programmable LED drive current
Benefits
- Module reduces board space and design effort
- Enables operation in IR light environments
- Pre-calibration eliminates need for customer to calibrate the end product
- Allows multiple power level selection without external passives
Product parameters
| Supply Voltage [V] | 2.6 - 3.6 |
|---|---|
| I²C Bus | VDD |
| Programmable | Interrupt |
| Integrated Capabilities and Components | IR LED |
| Recommended Operating Distances [cm] | <15 |
| Temperature Range [°C] | -40 to 85 |
| Package | Surface-mount module, pin count 8 |
General description
The TMD2672 family of devices provides a complete proximity detection system and digital interface logic in a single 8-pin surface mount module. The device is register-set and pin-compatible with the TMD2671 series and includes new and improved proximity detection features. The proximity detection includes improved signal-to-noise and accuracy. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false proximity data measurement readings, a proximity saturation indicator bit signals that the internal analog circuitry has reached saturation. Interrupts have been enhanced with the addition of a sleep-on-interrupt feature that also allows for a single cycle operation. The device internal state machine provides the ability to put the device in a low power mode in between proximity measurements, providing very low average power consumption.
This product suits for the following applications:
- Touchscreen control
- Printer paper alignment and detection
- Industrial process control
- Mechanical switch
Resources
| Type | Description | Language | ||
|---|---|---|---|---|
| Application Data | RefBoard | English |
Technical documents
| Type | Description | Language | ||
|---|---|---|---|---|
| Datasheet | Document version 1-00 | English | ||
| Application Note | Proximity Detection Layout Recommendations (DN32A) | English | ||
| Application Note | Proximity Detection IR LED and Optical Crosstalk (DN 34) | English | ||
| Application Note | Proximity Detection and Optical Lenses (DN36) | English | ||
| Application Note | Colorimetry Tutorial (DN 20) | English | ||
| Application Note | Optimizing Proximity Parameters | English | ||
| Application Note | Proximity Factory Calibration | English | ||
| Application Note | Basic Pre-Production Light & Color Sensor Solution Validation Process | English |
Environmental documents
| Type | Description | Language | ||
|---|---|---|---|---|
| RoHS Certificate | RoHS Certificate_TMD2672 | English |
Notifications
| Type | Description | Language | ||
|---|---|---|---|---|
| Product Change Notification | PCN42-2020 (issued 2020-Aug) | English |
Other information
| Type | Description | Language | ||
|---|---|---|---|---|
| Block Diagram | TMD2672 Block Diagram | English | ||
| Factsheet | Proximity Detection Sensor Family | English |
