ADUX1020 Photometric Sensor for Gesture and Proximity
The ADUX1020 is a highly efficient photometric sensor with an integrated 14-bit analog-to-digital converter (ADC) and a 20-bit burst accumulator that works in concert with a flexible light emitting diode (LED) driver. It is designed to modulate a LED and measure the corresponding optical return signal. The digital engine includes circuitry and control for data aggregation and proximity detection.
The data output and device configuration use a 1.8 V I2C interface. The control circuitry includes flexible LED pulse width and period generation combined with synchronous detection. This circuitry is complemented by a low noise, low power, and wide dynamic range configurable analog front end (AFE), clock generation, LED driver, and digital logic for position and smart sample mode (event driven x, y coordinates, relative z data). This complete AFE features ambient light rejection, avoiding corruption due to external interference.
One inexpensive standard surface mount, broad angle or narrow angle IR LED (depending upon application) is required. This LED mounts externally to the ADUX1020.
Packaged in a small clear mold 2 mm × 3 mm, 8-lead LFCSP, the ADUX1020 is specified over an operating temperature range of −40°C to +85°C.
Applications
- Gesture for user interface (UI )control in portable devices
- Industrial/automation monitoring
- Presence detection
- Angle sensing
Features and BenefitsMultifunction photometric sensor and signal conditioningFully integrated AFE, ADC, LED driver, and timing coreUsable for multiple optical measurement applications, including gesture control and proximity sensingEnables an ambient light rejection capability using both optical and analog filteringOn-chip programmable flexible current sink for external LEDHigh sensitivity and signal-to-noise ratio (SNR)High resolution position measurementGesture recognition with 0.5 cm to 15 cm rangeProximity sensing to 20 cm400 kHz I2C interfaceGesture/proximity works under infrared (IR) transparent glass or other materialsSimple integration with optics; no need for precise alignment and no lens is requiredLow power operation1.8 V analog/digital core8-lead, 2 mm × 3 mm, 0.65 mm height LFCSP | |
Data Sheets
Application Notes
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADUX1020BCPZRL7 Production | 8 ld LFCSP (2x3mm 1.59x1.89mm EP) | REEL 3000 | | 0 | 3.49 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| ADUX1020-EVAL-SDP | Evaluation Board | 119 | Y |
| ADUX1020-EVALZ-LED | Daughter Board (Optional) | 29 | Y |
