Overview
The ADPD103BCBZRL7, produced by Analog Devices Inc., is a highly efficient photometric front end designed for various optical measurement applications. It integrates a 14-bit analog-to-digital converter (ADC) and a 20-bit burst accumulator, enabling precise and robust signal processing. The device is optimized for stimulating LEDs and measuring the corresponding optical return signals, making it ideal for applications such as photoplethysmography and other vital signs monitoring.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | -40 | +85 | °C | |
| Storage Temperature Range | -65 | +150 | °C | |
| Power Supply Voltage (VDD) | 1.7 | 1.8 | 1.9 | V |
| Current Consumption (50 Hz data rate) | 150 | µA | ||
| Current Consumption (100 Hz data rate) | 300 | µA | ||
| Current Consumption (200 Hz data rate) | 600 | µA | ||
| ADC Resolution (Single Pulse) | 14 | Bits | ||
| ADC Resolution (64 to 255 pulses) | 20 | Bits | ||
| LED Driver Current Slew Rate (Rise, Setting = 0, ILED = 70 mA) | 240 | mA/µs | ||
| LED Driver Current Slew Rate (Rise, Setting = 7, ILED = 70 mA) | 1400 | mA/µs | ||
| SCL Frequency (I2C) | 400 | kHz |
Key Features
- Integrated AFE, ADC, and LED Drivers: The ADPD103 includes a fully integrated analog front end (AFE), a 14-bit ADC, and programmable pulsed LED current sources, making it a comprehensive solution for optical measurements.
- High Ambient Light Rejection: The device features best-in-class ambient light rejection capability without the need for photodiode optical filters, ensuring accurate measurements in various lighting conditions.
- Dual Time Slot Operation: The ADPD103 operates in two independent time slots, allowing for sequential execution of the entire signal path from LED stimulation to data capture and processing.
- I2C Communication Interface: The device uses a 1.8 V I2C interface for data output and functional configuration, providing easy integration with other systems.
- Flexible LED Signaling and Synchronous Detection: The control circuitry includes flexible LED signaling and synchronous detection, enhancing the device's versatility in different applications.
Applications
- Photoplethysmography (PPG): The ADPD103 is widely used in PPG applications for monitoring vital signs such as heart rate and blood oxygen levels.
- Industrial Sensing: Its robust signal processing and ambient light rejection capabilities make it suitable for various industrial sensing applications.
- Health Monitoring Devices: The device is used in health monitoring devices, including wearable fitness trackers and medical diagnostic equipment.
- Optical Measurement Systems: It is applicable in any system requiring precise optical measurements, such as in biomedical and consumer electronics.
Q & A
- What is the operating temperature range of the ADPD103?
The operating temperature range of the ADPD103 is from -40°C to +85°C.
- What is the resolution of the ADC in the ADPD103?
The ADC resolution is 14 bits for a single pulse and up to 20 bits for 64 to 255 pulses.
- How does the ADPD103 handle ambient light?
The ADPD103 features best-in-class ambient light rejection capability without the need for photodiode optical filters.
- What is the current consumption of the ADPD103 at different data rates?
The current consumption is 150 µA at 50 Hz, 300 µA at 100 Hz, and 600 µA at 200 Hz.
- What communication interface does the ADPD103 use?
The ADPD103 uses a 1.8 V I2C interface for data output and functional configuration.
- Can the ADPD103 be used with any type of LED?
Yes, the ADPD103 can be used with any LED, as the LED driver is agnostic to LED supply voltage and LED type.
- What is the significance of the dual time slot operation in the ADPD103?
The dual time slot operation allows for sequential execution of the entire signal path from LED stimulation to data capture and processing, enhancing the device's flexibility and performance.
- What is the package type of the ADPD103BCBZRL7?
The ADPD103BCBZRL7 comes in a 16-ball WLCSP (Wafer Level Chip Scale Package) with dimensions of 2.46mm x 1.4mm.
- Is there an evaluation board available for the ADPD103?
Yes, the EVAL-ADPD103Z-GEN evaluation board is available for evaluating the ADPD103 in various applications.
- What are some common applications of the ADPD103?
The ADPD103 is commonly used in photoplethysmography, industrial sensing, health monitoring devices, and other optical measurement systems.
