CDPD188B is a highly integrated photoelectric detection module, integrating photoelectric measurement analog front-end (AFE), ADC, LED driver, timing controller, and FIFO functions into a single chip. It features 60dB high ambient light suppression capability, specifically designed for weak signal detection in complex light environments. Supporting multi-pulse integration and multiple conversion modes, it can output up to 24-bit effective data. As a system-level single-chip solution, it provides core support for the new generation of intelligent smoke alarm, air quality monitoring, and vital sign sensing devices.
- Analog Supply Voltage(V):1.7 to 1.9
- IO Supply Voltage(V):1.7 to 3.6
- Standby Current(μA)(typ):1.5
- Ambient Light Rejection Ratio (ALRR)(dB)(typ):60
- LED Driver Voltage Drop (mV)(typ)(@100mA):80
- On-Chip PD Sensitivity(A/W):0.6
- Temperature Range(°C):-40 to 85
- Optical Path
- 129dB Dynamic Range (Receiver Link, Single Sampling)
- 60dB High Ambient Light Rejection Performance (DC~1KHz)
- Configurable Sampling Rate from 0.002Hz to 16kHz
- Multiple Conversion Modes: Up to 24-Bit Effective Data Output
- Standard I2C Communication Interface
- 1024-Byte FIFO
- Multi-Pulse Integration Mode: Suitable for Weak Signal Scenarios
- 4 Independently Configurable Time Slots for Multi-Parameter Synchronous Measurement
- 4 Differential/Single-Ended or 8 Single-Ended Photodiode Inputs
- Integrated Optical Measurement Analog Front-End (AFE), ADC, LED Driver, Timing Control, and FIFO
-
Supply Voltage
--VDD1/VDD2 Voltage: 1.7V to 1.9V
--IOVDD Voltage: 1.7V to 3.6V -
3-Channel LED Driver
--Programmable Constant Current Driving
--Maximum 240mA Driving Current per Channel -
Multiple Package Options for Different Application Scenarios
--OLGA-24 (CBMPD188B)
--OLGA Package with Integrated High-Performance Photodiode
- Fire Smoke Alarm
- Air Particulate Detection
- Ambient Light Measurement
- Gas Detection
- Other Colloidal Concentration Detection
