Vishay broadened its optoelectronics portfolio with the introduction of a new high-speed silicon PIN photodiode with enhanced sensitivity for visible light. Featuring a rectangular 4,8 by 2,5 mm top-view, surface-mount package with a 0,48 mm profile, the VEMD8080 offers fast switching times and low capacitance of 47 pF for precise signal detection in wearable devices and medical applications.
With a radiant-sensitive area measuring 4,5 mm² – and high radiant sensitivity with a reverse light current of 28 μA and dark current of 0,2 nA – the device utilises Vishay’s proven wafer technology to detect visible and near infrared radiation over a wide spectrum range from 350 nm to 1100 nm. For green LEDs, the VEMD8080’s sensitivity represents a 30% improvement over the standard technology in previous-generation solutions.
When used with green LEDs, such as Vishay’s VLMTG1400, the photodiode’s small size and high sensitivity enable slim sensor designs for optical heart rate detection in wearable devices such as fitness trackers and smart watches. In these devices, the VEMD8080’s rectangular shape allows several light emitting diodes to be placed close to the radiant sensitive area to maximise the signal. When combined with 660 nm and 940 nm dual colour emitting diodes, the photodiode is ideal for SpO2 measurement in medical monitors.
The VEMD8080 features a ±65° angle of half-sensitivity, temperature range of -40°C to +85°C, and 950 nm wavelength of peak sensitivity.
Reference board for cardio monitoring Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The STDES-ESP01 reference board from STMicroelectronics demonstrates the capability of the ST1VAFE6AX and ST1VAFE3BX biosensors to detect ECG and SCG signals.
Read more...ST MCUs extend ultra-low power innovation Altron Arrow
DSP, Micros & Memory
STMicroelectronics has introduced new STM32U3 microcontrollers with cutting-edge power-saving innovations that ease deployment of smart connected tech, especially in remote locations.
Read more...Multicell battery monitoring Altron Arrow
Power Electronics / Power Management
The LTC6811 from Analog Devices is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1,2 mV.
Read more...Innovative satellite navigation receiver Altron Arrow
Telecoms, Datacoms, Wireless, IoT
STMicroelectronics has released an innovative satellite navigation receiver to democratise precise positioning for automotive and industrial applications.
Read more...Easy Nixie tube display Dizzy Enterprises
Opto-Electronics
MIKROE has launched Nixie Power Click, a booster Click board designed to provide high voltage for powering Nixie Tube (cold cathode display) shields.
Read more...LED driver for industrial power supply indication Altron Arrow
Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.
Read more...High-voltage step-down DC-DC converter Altron Arrow
Power Electronics / Power Management
The MAX17793 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operating over an input voltage range of 3 to 80 V.
Read more...High-speed SAR ADC simplifies design Altron Arrow
Analogue, Mixed Signal, LSI
The ADI AD4080 simplifies data converter integration by integrating a low drift reference buffer, low dropout regulators and a 16K result data FIFO buffer.
Read more...Ultra-low power Bluetooth connectivity Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Silicon Labs’ delivers robust security and processing for common Bluetooth devices, while BG24L supports advanced AI/ML acceleration and Channel Sounding.
printer friendly version