OVERVIEW

GebraBit ADPD188GG is an integrated Optical Module with Ambient Light Rejection with 2 green LEDs, and 2 PDs with IR cut filter.

GebraBit ADPD188GG module, due to an integrated 1V8 regulator, needs a 5V input Supply Voltage to turn the ADPD188GG sensor ON. Regulator output is accessible on the “1V8” pin. Also, there is two jumper selector on the GebraBit ADPD188GG module; One is “VLED SEL” which determines ADPD188GG  Green LED Anode Supply Voltage between “5V” or “3V3”.The other jumper is “VI2C SEL” which is regarded to select logic level voltage of module I2C interface between “1V8” or “3V3”.This feature helps to use a wide range of microcontrollers for interfacing with this module.      

An important note about GebraBit ADPD188GG is that this module is Pin Compatible with GEBRABUS , and all important I/O of ADPD188GG is available. Users can interface with GebraBit ADPD188GG by either I2C or SPI protocol. This is achieved by dedicated five jumper selectors on the bottom right of the GebraBit ADPD188GG module.

ADPD188GG is a complete photometric system designed to measure optical signals from ambient light and from synchronous reflected light emitting diode (LED) pulses. Synchronous measurement offers best-in-class rejection of ambient light interference, both dc and ac. The module integrates a highly efficient photometric front end, two LEDs, and two photodiode (PD). All of these items are housed in a custom package that prevents light from going directly from the LED to the photodiode without first entering the subject.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.

WARNING: FOR ACCURATE INFORMATION ABOUT ICs ABSOLUTE MAXIMUM RATINGS AND ITS PRECIOUS  CHARACTERISTICS RANGES, USERS MUST CERTAINLY REFER TO ICs MANUFACTURE DATASHEET.

Key Features

• User-selectable I2C logic level voltage
• User-selectable ADPD188GG Green LED Anode Supply Voltage
• User-selectable interface protocol (I2C or SPI)
• 1V8 Voltage Regulator
• 1V8 Output Voltage
• On Board, ON/OFF LED indicator
• Pin Compatible with GEBRABUS
• Access to all important I/O of ADPD188GG
• GebraBit small package
• It can be used as a daughter board of GEBRABIT MCU Modules
• Featuring Castellated pad (Assembled as SMD Part)
• Separatable screw parts to reduce the size of the board

Pinout Diagram

Module Overview

Documents Link