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Analog Devices Inc.
Analog Devices Inc.
Analog Devices Inc.
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Low Noise, High Sensitivity Optical Sensor

Analog Devices Inc.

The ADPD2211 is an optical sensor optimized for biomedical applications. Very low power consumption and near theoretical signal-to-noise ratio (SNR) are achieved by packaging an ultralow capacitance deep junction silicon photodiode operated in zero bias photoconductive mode with a low noise current amplifier. The ADPD2211 offers a typical 400 kHz bandwidth performance, which is well suited for use with pulsed excitation. The ADPD2211 uses very little power during operation and incorporates a power-down pin, enabling power cycling to optimize battery life in portable applications. The ADPD2211 provides shot noise limited performance, making it an excellent choice for measuring signals with the highest possible fidelity in low light conditions. This combination of low power, very high SNR, and electromagnetic interference (EMI) immunity enables low power system solutions not possible with traditional photodiode (PD) and transimpedance amplifier (TIA) systems.

  • Ultrahigh detectivity photodetector
  • 90 fA/√Hz (typical) ultralow noise floor
  • Signal-to-noise ratio (SNR) near shot noise limit
  • 137µA (typical) of supply current when active (EE = 0µW/cm²)
  • 1µA (typical) of supply current in standby
  • High speed, deep junction photodiode
  • Nominal linear output current: 240µA (typical)
  • Flexible output configuration
  • Excellent pulse response
  • High ambient light rejection
  • Space-saving, 3mm × 3mm LFCSP package
  • Heart rate, pulse oximetry monitoring (photo plethysmography)
  • Battery-powered medical sensors
  • Chemical analysis
  • Mounting Type:Surface Mount
  • Operating Temperature:-40°C ~ 85°C
  • Output Type:Voltage
  • Package / Case:8-WFDFN Exposed Pad
  • Proximity Detection:No
  • Supplier Device Package:8-LFCSP (3x3)
  • Type:Ambient
  • Voltage - Supply:1.8V ~ 5V
  • Wavelength:528nm
Associated Product
Analog Devices Inc. EVALZ-ADPD2211
Category: Semiconductors, Development Tools-Programmers, Development Systems-Evaluation Boards-Sensors