Overview
The ADPD105BCPZRL, produced by Analog Devices Inc., is a highly efficient photometric front end designed for various optical sensing applications. This device integrates a 14-bit analog-to-digital converter (ADC), a 20-bit burst accumulator, LED drivers, and a timing core. It is optimized for best-in-class ambient light rejection without the need for photodiode optical filters. The ADPD105BCPZRL supports flexible sampling frequencies and low power operation, making it suitable for a range of applications including wearable health and fitness monitors, clinical measurements, and industrial monitoring.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution (Single Pulse) | 14 Bits | |||
| Resolution (64 to 255 Pulses) | 20 Bits | |||
| LED Driver Current | 370 mA | |||
| Sampling Frequency | 0.122 Hz | 3820 Hz | ||
| Interface | I2C (ADPD105) | SPI (ADPD106/ADPD107) | ||
| Supply Voltage (AVDD/DVDD) | 1.8 V | |||
| Package Type | 28-Lead LFCSP (4mm x 4mm w/ EP) | |||
| Standby Mode Current (IVDD_STANDBY) | 0.3 μA |
Key Features
- Fully integrated analog front end (AFE), ADC, LED drivers, and timing core.
- Best-in-class ambient light rejection capability without the need for photodiode optical filters.
- Three 370 mA LED drivers with flexible, multiple, short LED pulses per optical sample.
- 20-bit burst accumulator enabling up to 27 bits per data read.
- Low power operation with standby mode current as low as 0.3 μA.
- SPI or I2C interface for data output and functional configuration.
- Flexible sampling frequency ranging from 0.122 Hz to 3820 Hz).
- FIFO data operation for efficient data handling).
Applications
- Wearable health and fitness monitors).
- Clinical measurements, such as SpO2 monitoring).
- Industrial monitoring and background light measurements).
- Vital signs monitoring, including heart rate and blood oxygen level).
Q & A
- What is the primary function of the ADPD105BCPZRL?
The ADPD105BCPZRL is a photometric front end designed for optical sensing applications, integrating an ADC, LED drivers, and a timing core).
- What interface options are available for the ADPD105BCPZRL?
The ADPD105BCPZRL uses an I2C interface, while the ADPD106 and ADPD107 use SPI).
- What is the resolution of the ADC in the ADPD105BCPZRL?
The ADC has a resolution of 14 bits for single pulses and up to 20 bits for multiple pulses).
- What is the maximum LED driver current of the ADPD105BCPZRL?
The maximum LED driver current is 370 mA).
- What are the typical applications of the ADPD105BCPZRL?
Typical applications include wearable health and fitness monitors, clinical measurements, and industrial monitoring).
- What is the supply voltage for the ADPD105BCPZRL?
The supply voltage is 1.8 V for both AVDD and DVDD).
- What is the standby mode current of the ADPD105BCPZRL?
The standby mode current is as low as 0.3 μA).
- What package types are available for the ADPD105BCPZRL?
The ADPD105BCPZRL is available in a 28-Lead LFCSP (4mm x 4mm w/ EP) package).
- How does the ADPD105BCPZRL handle ambient light rejection?
The device features best-in-class ambient light rejection capability without the need for photodiode optical filters).
- What is the range of sampling frequencies supported by the ADPD105BCPZRL?
The sampling frequency ranges from 0.122 Hz to 3820 Hz).
