ADPD2211ACPZ-R7

ADPD2211ACPZ-R7 is a low-noise, high sensitivity optical sensor. It 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 photo conductive mode with a low noise current amplifier. It offers a typical 400KHz bandwidth performance, which is well suited for use with pulsed excitation. It uses very little power during operation and incorporates a power-down pin, enabling power cycling to optimize battery life in portable applications. It provides a shot noise-limited performance, making it an excellent choice for measuring signals with the highest possible fidelity in low-light conditions. It is used in applications such as heart rate, pulse oximetry monitoring (photoplethysmography), battery-powered medical sensors, chemical analysis.

• Ultrahigh detectivity photodetector, signal-to-noise ratio (SNR) near shot noise limit
• High speed, deep junction photodiode, flexible output configuration
• Excellent pulse response, high ambient light rejection
• Frequency response peaking is < 6dB typical at (VCC = 3.3V, TA = 25°C)
• Rise time is 1.24µs typical at (10% to 90% full scale (FS) (IOUT = 24µA))
• Current noise (output referred) is 1920fA/√Hz typical at (EE = 0µW/cm2)
• Power supply rejection ratio is 120nA/V typical at (VCC = 1.8V to 5V, EE = 2200µW/cm²)
• Standby current is 1µA typical at (PWDN > VIH, VCC = 3.3V, TA = 25°C)
• Output capacitance is 5pF typical at (VCC = 3.3V, TA = 25°C)
• Operating temperature range from -40°C to +85°C, 8-lead LFCSP package