ADPD188BI Integrated Optical Module for Smoke Detection

PublishTime：2021-07-26

●GENERAL DESCRIPTION:
The ADPD188BI is a complete photo metric 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). Theseitems 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.
●FEATURES:
■3.8 mm x 5.0 mm x 0.9 mm module with integrated optical components
■1 blue LEDZ1 IR LED, and 2 photodiodes
■2 external inputs for other sensors (for example, carbon monoxide (CO) and temperature)
■Three 370 mA LED drivers
■20-bit burst accumulator enabling 20 bits per sample period
■On-board sample to sample accumulator enabling up to
■27 bits per data read
■Optimized SNR for signal limited cases
■FC or SPI communications

Brand of Product：	ADI
Part#：	ADPD188BI 、 ADPD188BI-ACEZR7 、 ADPD188BI-ACEZRL 、 EVAL-ADPD188BIZ-S2 、 ADPD188BIZ More Part#
Product Category：	Integrated Optical Module More
Application：	[ Smoke detection ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	LGA_CAV;CE-24-1
Language：	English Chinese Chinese and English Japanese
Date of Creation：	11/2019
Version Number：	Rev. A
Data Encoding：	D16385-0-11/19(A)
Data Size：	1.3 MB

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Integrated Circuits