Vishay VCNL36826S and VCNL36821S proximity sensor
VCNL36826S integrates a proximity sensor (PS), and a VCSEL into one small package
VCNL36826S integrates a proximity sensor (PS), and a VCSEL into one small package.
VCNL36821S integrates a proximity sensor (PS), and an IRED into one small package.
Both incorporate photodiodes, amplifiers, and analog to digital converting circuits into a single chip by CMOS process. PS programmable interrupt features of individual high and low thresholds offers the best utilization of resource and power saving on the microcontroller.
- Sunlight cancellation up to 100 klx
- Low power consumption mode
- Programmable IVCSEL sink current
- Immunity to red glow (940 nm IRED)
- Package type: surface-mount
- Dimensions (L x W x H in mm): 2.55 x 2.05 x 1.0
- Integrated modules: IRED or vertical-cavity surface-emitting laser (VCSEL), proximity sensor (PS), and signal conditioning IC
- Interrupt function
- Smallest light hole opening design
- Supply voltage range VDD: 1.7 V to 3.6 V
- Low power consumption I2C (SMBus compatible interface)
- Output type: I2C bus
- Temperature compensation: -40 °C to +85 °C
- Floor life: 168 h, MSL 3, according to J-STD-020
- Handheld device
- Consumer device
- Industrial application
The Optoelectronics Group of Vishay Intertechnology, Inc. introduced two new fully integrated proximity sensors designed to increase efficiency and performance in consumer and industrial applications. Featuring an IR emitter and a vertical-cavity surface-emitting laser (VCSEL), respectively, the Vishay Semiconductors VCNL36821S and VCNL36826S each combine a photodiode, signal processing IC, and 12-bit ADC in a compact 2.55 mm by 2.05 mm by 1.0 mm surface-mount package.
Compared to previous-generation devices, the proximity sensors released today offer smaller packages at a lower cost, making them ideal for space-constrained battery-powered applications, such as detecting if users are wearing or not wearing earbuds or virtual reality/augmented reality (VR/AR) headsets. With ranges to 300 mm, they also provide collision detection in toys and consumer and industrial robots. The VCNL36821S and VCNL36826S feature low power consumption down to 6 µA to increase efficiency in these applications.
The devices support the I2C bus communication interface for easy access to the proximity signal, while their programmable interrupt function allows designers to specify high and low thresholds to reduce the continuous communication with the microcontroller. The proximity sensors use intelligent cancellation to eliminate cross-talk, while a smart persistence scheme ensures accurate sensing and faster response time. The IRED and VCSEL wavelengths peak at 940 nm and have no visible “red-tail.”
The VCNL36821S and VCNL36826S offer excellent temperature compensation from -40 °C to +85 °C, and a Moisture Sensitivity Level (MSL) of 3 - in accordance with J-STD-020 - for a floor life of 168 hours. The sensors are RoHS-compliant, halogen-free, and Vishay Green.
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