ADPD7000
RECOMMENDED FOR NEW DESIGNSMultimodal Sensor Front End
- Part Models
- 1
- 1ku List Price
- Starting From $7.80
Part Details
- Multimodal analog front end
- Optical channel
- 4 input channels with multiple operation modes for various sensor measurements
- 4-channel processing with simultaneous sampling
- 12 programmable time slots for synchronized sensor measurements
- Flexible input multiplexing to support single-ended sensor measurements
- 8 LED drivers, 2 of which can be driven simultaneously
- Flexible sampling rate from 0.004 Hz to 9 kHz using internal oscillators
- AC ambient light rejection: 78 dB up to 100 Hz
- 400 mA total LED peak drive current
- Individual ambient cancellation DAC at TIA input with 9-bit control up to 300 μA
- Individual LED DC cancellation DAC at TIA input with 7-bit control up to 190 μA
- ECG channel
- <1 μV RMS RTI noise at diagnosis bandwidth
- High input impedance 20 GΩ
- Accepts up to ±1.2 V of DC differential input range
- CMRR: 115 dB
- Flexible 4 electrode configurations to support various applications
- Both AC lead off detection and DC lead off detection
- Support always on, low power, lead on detection
- BIA channel
- Low power, high accuracy excitation path
- Configurable excitation frequency up to 250 kHz
- Sine wave excitation with a 12-bit DAC
- High accuracy with large imbalance contact impedance ≤20 kΩ
- Configurable receive filters with low noise design
- Complex impedance measurement engine
- Integrated current-limit resistors
- EDA channel
- Support both voltage excitation and current excitation
- 10 kΩ to100 MΩ measurement range with 1 nS resolution
- DFT and decimation for high accuracy measurement result
- SPI communications supported
- 704-byte FIFO
The ADPD7000 is a highly integrated analog front end (AFE) designed for measuring various vital signals.
The optical channel is designed as an optical transceiver, stimulating up to eight light emitting diodes (LEDs) and measuring the return signal on up to four separate current inputs. The signal chain rejects signal offsets and corruption from asynchronous modulated interference, typically from ambient light, eliminating the need for optical filters or externally controlled DC cancellation circuitry.
The electrocardiography (ECG) signal acquisition is designed to support low noise, diagnostic level measurement in the presence of a variety of interferers. The ECG signal chain has a number of complementary features supporting ECG measurement, such as driven reference for common-mode rejection and lead off detection to identify a fallen electrode.
The body impedance analysis (BIA) signal chain is designed for body impedance measurement with a configurable excitation path and measurement path. A 12-bit digital-to-analog converter (DAC) is used in the excitation path to generate the sinusoid wave and high precision measurement, with configurable filters used to measure the body response of the stimulus.
The electrodermal activity (EDA) signal chain is designed for electrodermal activity. By multiplexing BIA and ECG peripheral circuits, the ADPD7000 supports high precision AC and DC measurement with 1 nS resolution.
The data output and functional configuration use a serial port interface (SPI) on the ADPD7000. The control circuitry includes flexible LED signaling and synchronous detection, digital filters, digital wave generators, and configurable filters.
The ADPD7000 is available in a 2.795 mm × 2.560 mm, 0.40 mm pitch, 36-ball WLCSP.
APPLICATIONS
- Wearable health and fitness monitors: heart rate, heart rate variability, saturation level of pulse oxygen, body impedance analysis, hydration analysis, and cuff-less noninvasive blood pressure
- Clinical patient monitors: small bed-side patient, home portable patient, and small remote patient
- Industrial monitoring: particle, aerosol, and gas detection
- Conductivity detection
Documentation
Data Sheet 1
User Guide 1
Analog Dialogue 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADPD7000BCBZR7 | 36-ball WLCSP (2.795 mm x 2.560 mm x 0.595 mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 2
VSM Client Setup
A Windows client solution of VSM products from ADI which can adjust PPG, ECG and BIOZ corresponding parameters, plot signals and optimize signals through some simple algorithms.
ADPD7000 SDK Setup
The ADPD7000 SDK library is a collection of APIs that provide a consistent interface to the Multimodal Sensor Front End Devices.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Charger Plus DC/DC 1 | ||
| ADP5360 | RECOMMENDED FOR NEW DESIGNS | Advanced Battery Management PMIC with Ultra Low Power Fuel Gauge, Battery Protection, Buck and Buck Boost |
| Internal Power Switch Buck Regulators 1 | ||
| ADP5300 | PRODUCTION |
50 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator |
| Multitopology DC/DC 1 | ||
| MAX77658 | RECOMMENDED FOR NEW DESIGNS | Ultra-Low Power PMIC Featuring Single-Inductor, 3-Output Buck-Boost, 2-LDOs, Power-Path Charger, and Fuel Gauge for Small Li+ |
| Positive Linear Regulators (LDO) 1 | ||
| ADP150 | PRODUCTION | Ultralow Noise, 150 mA CMOS Linear Regulator |
| SIMO Regulators 2 | ||
| MAX77642 | RECOMMENDED FOR NEW DESIGNS | Ultra Configurable PMIC Featuring 93% Peak Efficiency Single-Inductor, 3-Output Buck-Boost, 1-LDO for Long Battery Life |
| MAX77646 | RECOMMENDED FOR NEW DESIGNS | Ultra-Configurable SIMO PMIC Featuring 3-Output Buck-Boost, 1-LDO for Long Battery Life Primary Cell Applications |
Evaluation Kits
Evaluating the ADPD7000 Multimodal Sensor Front End
Resources
Software
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