ADPD1080WBCPZR7

ADPD1080 is a highly efficient, photometric front ends, each with an integrated 14-bit analogue-to-digital converter (ADC) and a 20-bit burst accumulator that works with flexible light emitting diode (LED) drivers. It stimulates an LED and measures the corresponding optical return signal. The data output and functional configuration occur over a 1.8V I²C interface on the device or a serial port interface (SPI) on the ADPD1081. The control circuitry includes flexible LED signalling and synchronous detection. The analogue front end (AFE) features rejection of signal offset and corruption due to modulated interference commonly caused by ambient light without the need for optical filters or dc cancellation circuitry that requires external control. It is used in applications such as wearable health and fitness monitors, clinical measurements, for example, SpO2, industrial monitoring, background light measurements.

• Multifunction photometric front end
• Fully integrated AFE, ADC, LED drivers, and timing core
• Three 370mA LED peak current drivers
• Flexible, multiple, short LED pulses per optical sample
• 20-bit burst accumulator enabling 20bits per sample period
• On-board sample to sample accumulator, enabling upto 27bits per data read
• Low power operation SPI, I²C interface, and 1.8V analogue/digital core
• Flexible sampling frequency ranging from 0.122Hz to 2700Hz, FIFO data operation
• Operating temperature is -40°C to +105°C, qualified for automotive application
• Package style is 28-lead LFCSP

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