My Inquiry
My Account
Analog Devices Inc. ADPD1080BCPZ
- Part No.:
- ADPD1080BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Sensor and Detector Interfaces
- Package:
- 28-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADPD1080BCPZ.pdf
- Description:
- PHOTOMETRIC FRONT-END
- Quantity:
- Payment:
- Shipping:
Inventory:459
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADPD1080BCPZ from Analog Devices is a photometric front-end IC designed for optical biosensing in wearable and clinical systems. It integrates a 14-bit ADC, 20-bit burst accumulator, three 370 mA LED drivers, and synchronous ambient-light-rejecting AFE - enabling SpO₂ and PPG measurement without optical filters. Its I²C interface, 1.8 V core, and 16-ball WLCSP package support compact, low-power health monitors.
For engineers reviewing the ADPD1080BCPZ datasheet, ADPD1080BCPZ pinout, ADPD1080BCPZ application, or ADPD1080BCPZ equivalent, key selection criteria include its 27-bit accumulated data depth per read, dual time-slot sampling architecture, ambient-light rejection capability, and automotive-qualified operation up to +105°C.
Technical Context
The ADPD1080BCPZ implements a dual time-slot synchronous detection scheme: Time Slot A captures pulsed LED return signals while Time Slot B measures ambient light for real-time subtraction. Its analog front end uses ±1 integrator-based transimpedance amplifiers with programmable feedback resistors (25–200 kΩ) and integrated offset compensation to reject modulated interference without external DC cancellation circuitry.
Control is managed via an on-chip state machine synchronized to a 32 kHz internal clock, supporting flexible LED pulse timing (1–255 pulses/sample), adjustable sampling frequency (0.122 Hz–2700 Hz), and FIFO-based data output. The device operates in normal, standby, and float modes - with standby current as low as 0.3 µA and peak LED driver current up to 370 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 14-bit per pulse; 20-bit per sample (64–255 pulses); 27-bit per data read (with on-board accumulator) |
| LED Driver Peak Current | 370 mA per channel - supports high-intensity, short-duration pulses for improved SNR in low-signal conditions |
| Sampling Frequency Range | 0.122 Hz to 2700 Hz - enables both ultra-low-power sleep monitoring and high-speed motion artifact rejection |
| Ambient Light Rejection | Hardware-level synchronous detection - eliminates need for optical bandpass filters or external DC cancellation circuits |
| Supply Voltage | 1.7 V to 1.9 V (AVDD/DVDD) - compatible with single-cell Li-ion/Li-poly battery systems |
| Interface | I²C (1.8 V level) - simplifies host integration with standard microcontrollers and avoids SPI routing complexity |
| Operating Temperature | −40°C to +105°C - qualified for automotive cabin and clinical-grade wearable applications |
Pinout & Package
ADPD1080BCPZ is housed in a 16-ball, 2.46 mm × 1.4 mm wafer-level chip-scale package (WLCSP) with 0.4 mm pitch. The package includes an exposed die attach pad (not electrically connected) recommended for thermal management and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PD1–PD5 | Photodiode anode inputs | Five independent current-input channels for multi-wavelength or multi-site optical sensing; each connects to internal TIA |
| LEDX1–LEDX3 | LED cathode drive outputs | Three high-current, slew-rate-controlled drivers (up to 370 mA) with configurable timing and compliance voltage |
| PDC | Photodiode cathode bias control | Configurable voltage output (0–1.8 V) to set photodiode reverse bias and optimize dynamic range under ambient light |
| GPIO0/GPIO1 | Programmable I/O | Support interrupt signaling, external clock input, or timing synchronization with external sensors (e.g., ECG) |
| SCL/SDA | I²C interface | Standard two-wire serial interface operating at up to 400 kHz - enables configuration, register access, and data streaming |
| AVDD/DVDD | Analog/digital power supplies | Separate 1.8 V rails minimize digital noise coupling into sensitive analog signal path |
| AGND/DGND | Analog/digital ground | Independent ground planes required for optimal noise isolation between AFE and digital logic |
| VREF | ADC reference buffer | Internally generated reference; requires 1 µF decoupling capacitor to AGND for stable 14-bit conversion accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Dual time-slot synchronous detection | Enables real-time ambient light subtraction without post-processing - critical for accurate SpO₂ in variable lighting |
| 20-bit burst accumulator + 27-bit sample-to-sample accumulation | Extends effective resolution beyond 14-bit ADC, improving SNR by up to 13 bits without increasing host MCU processing load |
| Configurable LED pulse timing (1–255 pulses/sample) | Allows trade-off between measurement speed and SNR - e.g., 128 pulses at 25 Hz yields >75 dB SNR in PPG |
| Integrated TIA with 25–200 kΩ programmable gain | Supports wide range of photodiode capacitances (<100 pF) and responsivities while maintaining linearity and headroom |
| 0.3 µA standby current | Enables multi-week battery life in always-on wearables - wake-up triggered via GPIO or timer event |
| Automotive qualification (AEC-Q100 Grade 2) | Validated for operation from −40°C to +105°C - suitable for in-cabin health monitoring and industrial optical sensors |
Applications
| Wearable Pulse Oximetry | Clinical PPG Monitoring |
|---|---|
Use Scenario: Continuous SpO₂ measurement on wrist-worn fitness tracker under indoor/outdoor lighting. IC Role / Device Role / Timing Role: ADPD1080BCPZ acts as the optical front-end controller - driving red/IR LEDs, synchronously sampling photodiode currents, and rejecting ambient light via dual time-slot subtraction. Use Value: Delivers clinically relevant SpO₂ accuracy without optical filters or mechanical shielding, reducing BOM cost and optical stack height. | Use Scenario: Bedside patient monitor acquiring high-fidelity PPG waveforms for heart rate variability (HRV) analysis. IC Role / Device Role / Timing Role: ADPD1080BCPZ serves as the precision analog signal conditioner - digitizing low-amplitude pulsatile signals with 27-bit accumulated resolution and <1 nA rms noise floor. Use Value: Enables reliable detection of subtle waveform features (e.g., dicrotic notch) even under high ambient light or motion, supporting advanced diagnostics. |
| Industrial Ambient Light Sensing | Multi-Channel Optical Biosensing |
Use Scenario: Factory-floor light intensity monitoring across varying spectral conditions (fluorescent, LED, daylight). IC Role / Device Role / Timing Role: ADPD1080BCPZ functions as a calibrated photometric sensor - using its ambient-rejecting AFE to isolate true illuminance independent of source spectrum. Use Value: Eliminates need for multiple filtered photodiodes or complex calibration routines - single device handles broad-spectrum ambient measurement. | Use Scenario: Multi-wavelength spectroscopic sensor for tissue oxygenation or glucose estimation using 3+ LED wavelengths. IC Role / Device Role / Timing Role: ADPD1080BCPZ provides time-multiplexed, synchronized acquisition across five photodiode inputs and three LED drivers - enabling precise wavelength interleaving. Use Value: Supports full spectral acquisition within one compact IC, avoiding inter-channel timing skew and PCB layout complexity of discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar photometric front-end applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADPD1081BCPZ | SPI-only interface; identical AFE, LED drivers, and timing architecture; same WLCSP package but 17-ball variant | Better suited for hosts with SPI preference or tighter timing control requirements; lacks I²C compatibility | Select ADPD1081BCPZ when SPI integration simplifies system design or when higher interface clock rates (>400 kHz) are needed. |
| MAX30102 | Integrated red/IR LEDs and photodiodes; no external LED driver control; 16-bit ADC only; no burst accumulation | Targeted at entry-level wearables with fixed optical path; limited ambient rejection and dynamic range | Choose MAX30102 for cost-sensitive, space-constrained designs where programmability and SNR headroom are secondary to integration. |
Compared with ADPD1080BCPZ, ADPD1081BCPZ offers identical analog performance but trades I²C simplicity for SPI flexibility, while MAX30102 sacrifices configurability and resolution for monolithic integration - making ADPD1080BCPZ the optimal choice for high-accuracy, field-upgradable optical biosensors.
Availability
ADPD1080BCPZ is available at Aetrix Electronics and suitable for wearable health monitors, clinical SpO₂ devices, and industrial ambient light sensors requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for ADPD1080BCPZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADPD1080BCPZ belongs to Analog Devices' photometric front-end product line, engineered specifically for high-SNR, low-power optical biosensing in size- and power-constrained environments - with emphasis on clinical-grade accuracy and ambient robustness.
FAQ
What is the primary function of the ADPD1080BCPZ in an optical sensing system?
The ADPD1080BCPZ serves as a complete photometric front-end IC that drives LEDs, captures photodiode current signals, rejects ambient light via synchronous dual time-slot sampling, and digitizes results with up to 27-bit effective resolution. In any optical sensing system, the ADPD1080BCPZ replaces discrete op-amps, ADCs, LED drivers, and timing controllers - reducing design complexity while improving repeatability and SNR.
Does the ADPD1080BCPZ require external optical filters for ambient light rejection?
No, the ADPD1080BCPZ achieves ambient light rejection through hardware-based synchronous detection - measuring ambient during Time Slot B and subtracting it from the LED-driven signal in Time Slot A. This eliminates dependence on external optical bandpass filters, reducing optical stack height, cost, and alignment sensitivity. The ADPD1080BCPZ performs this rejection internally using its integrated AFE and timing core, with no external components required.
What is the maximum number of LED pulses supported per optical sample in the ADPD1080BCPZ?
The ADPD1080BCPZ supports up to 255 LED pulses per optical sample period. This is configured via the LED pulse count register and directly impacts SNR - for example, 128 pulses at 25 Hz yield >75 dB SNR in PPG measurements. Each pulse is individually timed and synchronized to the AFE integration window, and the 20-bit burst accumulator coherently sums all pulses before final 27-bit readout. This capability is intrinsic to the ADPD1080BCPZ architecture and does not require host MCU intervention.
Can the ADPD1080BCPZ operate with photodiodes having capacitance above 100 pF?
The ADPD1080BCPZ is characterized and optimized for photodiodes with capacitance below 100 pF, as stated in the datasheet. While operation may be possible with higher capacitance devices, performance degrades - including reduced bandwidth, increased settling time, and potential instability in the TIA loop. For reliable operation, the ADPD1080BCPZ should be paired with low-capacitance photodiodes (e.g., <70 pF), and layout must minimize trace capacitance. Exceeding 100 pF voids guaranteed specifications for the ADPD1080BCPZ.
How does the ADPD1080BCPZ manage power consumption in battery-powered wearables?
The ADPD1080BCPZ minimizes power via multiple hardware-level techniques: standby current as low as 0.3 µA, configurable LED pulse count (1–255), selectable sampling frequency (0.122 Hz–2700 Hz), and channel-level shutdown. At 100 Hz with single time slot and one pulse, typical VDD current is 53 µA; in standby, it drops to sub-microamp levels. These settings are controlled entirely within the ADPD1080BCPZ - no host processor involvement is needed to achieve ultra-low average power, extending wearable battery life to weeks.
ADPD1080BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 28-WFQFN Exposed Pad, CSP
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Front End
- Input Type:
- Photodiode
- Output Type:
- I2C
- Current - Supply:
- 184 µA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-LFCSP-WQ (4x4)
ADPD1080BCPZ FAQ
1.How can I place an order for ADPD1080BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADPD1080BCPZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADPD1080BCPZ reliable?
The price and inventory of ADPD1080BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADPD1080BCPZ is usually 5 days.
3.What payment methods are accepted for ADPD1080BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADPD1080BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADPD1080BCPZ?
ADPD1080BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADPD1080BCPZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADPD1080BCPZ?
For technical support, including ADPD1080BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADPD1080BCPZ requirements.
6.How does Aetrix verify that ADPD1080BCPZ is sourced from the original manufacturer or authorized distributors?
All ADPD1080BCPZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADPD1080BCPZ meets industry standards.
7.What is the process for return or replacement of ADPD1080BCPZ?
All ADPD1080BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with ADPD1080BCPZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADPD1080BCPZ part is unused and in its original packaging.
Return procedure for ADPD1080BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADPD1080BCPZ Tags
-
RE46C100S8TF
Microchip Technology
-
XTR111AIDRCR
Texas Instruments
-
XTR111AIDGQR
Texas Instruments
-
XTR117AIDGKR
Texas Instruments
-
XTR111AIDGQT
Texas Instruments
-
XTR115UA/2K5
Texas Instruments
-
MAX14626ETT+T
Analog Devices Inc./Maxim Integrated
-
XTR116UA/2K5
Texas Instruments
-
XTR115U/2K5
Texas Instruments
-
XTR116U/2K5
Texas Instruments
-
PGA308AIDGSR
Texas Instruments
-
XTR300AIRGWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
