New Vishay Intertechnology Silicon PIN Photodiode Improves Sensitivity in Biomedical Applications
Vishay Intertechnology (NYSE: VSH) has introduced the VEMD8082, a new silicon PIN photodiode designed for biomedical applications such as heart rate and blood oxygen monitoring. Key features include:
- Larger sensitive area of 6.0 mm²
- Increased reverse light current by 18% to 20%
- Small form factor of 4.8 mm x 2.5 mm x 0.5 mm
- Decreased diode capacitance from 50 pF to 46 pF
- Faster rise times of 40 ns vs. 110 ns
These improvements enhance sensitivity in visible/near infrared wavelengths, important for applications like photoplethysmography (PPG). The device's compact size makes it suitable for integration into low-profile devices such as smart watches.
Vishay Intertechnology (NYSE: VSH) ha introdotto il VEMD8082, un nuovo fotodiodo PIN in silicio progettato per applicazioni biomediche come il monitoraggio della frequenza cardiaca e dell'ossigeno nel sangue. Tra le caratteristiche principali ci sono:
- Area sensibile maggiore di 6,0 mm²
- Aumento della corrente di luce inversa del 18% al 20%
- Fattore di forma compatto di 4,8 mm x 2,5 mm x 0,5 mm
- Capacitance del diodo ridotta da 50 pF a 46 pF
- Tempi di salita più rapidi di 40 ns rispetto a 110 ns
Questi miglioramenti aumentano la sensibilità nelle lunghezze d'onda visibili/infrarosso vicino, importante per applicazioni come la fotopletismografia (PPG). La dimensione compatta del dispositivo lo rende adatto per l'integrazione in dispositivi a basso profilo come gli orologi smart.
Vishay Intertechnology (NYSE: VSH) ha presentado el VEMD8082, un nuevo fotodiodo PIN de silicio diseñado para aplicaciones biomédicas como el monitoreo de la frecuencia cardíaca y del oxígeno en sangre. Las características clave incluyen:
- Área sensible más grande de 6,0 mm²
- Aumento de la corriente de luz inversa del 18% al 20%
- Factor de forma pequeño de 4,8 mm x 2,5 mm x 0,5 mm
- Capacitancia del diodo reducida de 50 pF a 46 pF
- Tiempos de subida más rápidos de 40 ns frente a 110 ns
Estas mejoras aumentan la sensibilidad en longitudes de onda visibles/infrarrojas cercanas, importante para aplicaciones como la fotopletismografía (PPG). El tamaño compacto del dispositivo lo hace adecuado para la integración en dispositivos de bajo perfil como los relojes inteligentes.
Vishay Intertechnology (NYSE: VSH)가 VEMD8082를 출시했습니다. 이는 심박수 및 혈중 산소 모니터링과 같은 생의학 응용 프로그램을 위해 설계된 새로운 실리콘 PIN 포토다이오드입니다. 주요 특징은 다음과 같습니다:
- 더 큰 감지 영역: 6.0 mm²
- 역광 전류 증가: 18%에서 20%로 증가
- 소형 폼 팩터: 4.8 mm x 2.5 mm x 0.5 mm
- 다이오드 정전 용량 감소: 50 pF에서 46 pF로 감소
- 더 빠른 상승 시간: 40 ns 대 110 ns
이러한 개선 사항은 PPG(광혈류측정법)와 같은 응용 프로그램에 중요한 가시광선/근적외선 파장에서의 감도를 향상시킵니다. 장치의 소형 사이즈는 스마트 워치와 같은 저 프로파일 장치에 통합하는 데 적합합니다.
Vishay Intertechnology (NYSE: VSH) a présenté le VEMD8082, une nouvelle photodiode PIN en silicium conçue pour des applications biomédicales telles que la surveillance de la fréquence cardiaque et de l'oxygène dans le sang. Les principales caractéristiques incluent :
- Zone sensible plus grande de 6,0 mm²
- Augmentation du courant de lumière inverse de 18 % à 20 %
- Format compact de 4,8 mm x 2,5 mm x 0,5 mm
- Capacité du diode réduite de 50 pF à 46 pF
- Temps de montée plus rapides de 40 ns contre 110 ns
Ces améliorations augmentent la sensibilité dans les longueurs d'onde visibles/infrarouges proches, ce qui est important pour des applications comme la photopléthysmographie (PPG). La taille compacte de l'appareil le rend adapté pour une intégration dans des dispositifs à profil bas tels que les montres intelligentes.
Vishay Intertechnology (NYSE: VSH) hat den VEMD8082 vorgestellt, einen neuen Silikon-PIN-Photodioden, der für biomedizinische Anwendungen wie Herzfrequenz- und Blutoxygenüberwachung entwickelt wurde. Zu den wichtigsten Funktionen gehören:
- Größere empfindliche Fläche von 6,0 mm²
- Erhöhte Rückwärtige Lichtstromstärke um 18 % bis 20 %
- Kompakte Bauform von 4,8 mm x 2,5 mm x 0,5 mm
- Verringerte Diodenkapazität von 50 pF auf 46 pF
- Schnellere Anstiegszeiten von 40 ns im Vergleich zu 110 ns
Diese Verbesserungen erhöhen die Empfindlichkeit bei sichtbaren/nahen Infrarotwellenlängen, die für Anwendungen wie Photoplethysmographie (PPG) wichtig sind. Die kompakte Größe des Geräts macht es geeignet für die Integration in flache Geräte wie Smartwatches.
- Introduction of VEMD8082 silicon PIN photodiode with improved sensitivity for biomedical applications
- 18% to 20% increase in reverse light current, enhancing device performance
- Decreased diode capacitance from 50 pF to 46 pF, allowing for higher sampling rates
- Faster rise times of 40 ns vs. 110 ns, improving device responsiveness
- Small form factor of 4.8 mm x 2.5 mm x 0.5 mm, suitable for integration into low-profile devices
- None.
Insights
The release of Vishay's VEMD8082 silicon PIN photodiode marks a significant advancement in biomedical sensing technology. With its larger sensitive area of 6.0 mm² and
These improvements could lead to more precise diagnostics for cardiovascular conditions, potentially enabling earlier detection and better management of heart diseases. The device's compact size (4.8 mm x 2.5 mm x 0.5 mm) also facilitates integration into wearable devices, potentially expanding the reach of continuous health monitoring. However, it's important to note that while these technical improvements are promising, their real-world impact on clinical outcomes remains to be validated through rigorous testing and peer-reviewed studies.
Vishay's VEMD8082 represents a noteworthy evolution in photodiode technology. The 18% to 20% increase in reverse light current is particularly impressive, as it directly translates to improved sensitivity in low-light conditions. This could be a game-changer for wearable devices, potentially allowing for more accurate measurements through various skin tones and in challenging lighting environments.
The reduction in diode capacitance from 50 pF to 46 pF, while seemingly small, can significantly improve the photodiode's response time and reduce noise in high-frequency applications. Combined with the faster rise times (40 ns vs. 110 ns), this could enable more sophisticated signal processing techniques, potentially opening doors for new applications beyond traditional heart rate and SpO2 monitoring.
However, it's important to note that while these specifications are impressive on paper, the real test will be in practical implementations. Factors such as power consumption, temperature stability and long-term reliability will be important for the success of this component in consumer devices.
Key Features Include Larger Sensitive Area of 6.0 mm², Increased Reverse Light Current, and Small Form Factor of 4.8 mm by 2.5 mm by 0.5 mm
MALVERN, Pa., Aug. 14, 2024 (GLOBE NEWSWIRE) -- Vishay Intertechnology, Inc. (NYSE: VSH) today released a new silicon PIN photodiode that brings a higher level of sensitivity in the visible / near infrared wavelength to biomedical applications such as heart rate and blood oxygen monitoring. The new VEMD8082 features increased reverse light current, decreased diode capacitance, and faster rise and fall times compared to previous-generation solutions. Additionally, its small form factor of 4.8 mm by 2.5 mm by 0.5 mm makes it suitable for integration into low profile devices such as smart watches.
The high sensitivity provided by the VEMD8082 is particularly important in biomedical applications such as photoplethysmography (PPG), where the photodiode is used to detect changes in blood volume and flow by measuring the amount of light absorbed or reflected by blood vessels. In such applications, precise measurements are crucial for diagnosing and monitoring conditions such as cardiovascular disease.
Specifications for the new device contributing to its high sensitivity compared to previous-generation devices include a radiant sensitive area of 6.0 mm² and an increase in reverse light current of 18 % to 20 %, depending on wavelength. Decreased diode capacitance from 50 pF to 46 pF, as well as faster rise times of 40 ns vs. 110 ns, allow for higher sampling rates.
Samples and production quantities of the VEMD8082 are available now.
Vishay manufactures one of the world’s largest portfolios of discrete semiconductors and passive electronic components that are essential to innovative designs in the automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical markets. Serving customers worldwide, Vishay is The DNA of tech.® Vishay Intertechnology, Inc. is a Fortune 1,000 Company listed on the NYSE (VSH). More on Vishay at www.Vishay.com.
The DNA of tech® is a registered trademark of Vishay Intertechnology, Inc.
Vishay on Facebook: http://www.facebook.com/VishayIntertechnology
Vishay Twitter feed: http://twitter.com/vishayindust
Link to product datasheet:
http://www.vishay.com/ppg?80381 (VEMD8082)
Link to product photo:
https://www.flickr.com/photos/vishay/albums/72177720319419405
For more information please contact:
Vishay Intertechnology
Peter Henrici, +1 408 567-8400
peter.henrici@vishay.com
or
Redpines
Bob Decker, +1 415 409-0233
bob.decker@redpinesgroup.com
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