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ADPD188BI Integrated Optical Module for Smoke Detection
Analog Devices' optical mixed-signal devices with photodiodes and light-emitting diodes
ADI's ADPD188BI is a complete photometric system for smoke detection using optical dual-wavelength technology. The module integrates a highly efficient photometric front end, two light-emitting diodes (LEDs), and two photodiodes (PDs). These items are housed in a custom package that prevents light from going directly from the LED to the photodiode without first entering the smoke detection chamber.
The front end of the application-specific integrated circuit (ASIC) consists of a control block, a 14-bit analog-to-digital converter (ADC) with a 20-bit burst accumulator, and three flexible, independently configurable LED drivers. The control circuitry includes flexible LED signaling and synchronous detection. The analog front end (AFE) features best-in-class rejection of signal offset and corruption due to modulated interference commonly caused by ambient light. The data output and functional configuration occur over a 1.8 V I2C interface or serial peripheral interface (SPI) port.
- Supports UL-217 edition 8/UL-568 ed. 7; EN-54; GB; ISO
- 3X lower power dissipation enables smaller and cheaper batteries
- Integrated optical module (3.8 mm x 5 mm x 0.9 mm with 1 blue LED, 1 IR LED, and 2 photodiodes)
- Simplifies EMC design
- Allows for greater diversity of industrial design options
- Results in 75% fewer discrete components
- Lowers nuisance alarms using dual wavelength detection with higher SNR and dynamic range
- Loop calibration at final test reduces calibration challenges with smoke detector products
- Supported by ADI designed smoke chamber manufactured by Accumold, 28800X [EVAL-CHAMBER Mechanical Dimensions (PDF)]
Applications
- Smoke detection
Evaluation Board
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 |  | EVAL-ADPD188BIZ-S2 | EVALUATION BOARD ADPD188BIZ | 14 - Immediate | $662.51 | View Details |
Optical Sensors
| Image | Manufacturer Part Number | Description | Output Type | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
|  | ADPD188BI-ACEZR7 | SENSOR OPT 470850NMAMB 24 VFLGA | I2C, SPI | 1227 - Immediate | $111.87 | View Details |
Hong Kong, China