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EBV presents: Force sensing solutions from Vishay

Vishay Intertechnology Inc. (Vishay) is one of the world's largest semiconductor manufacturers with over 30 years of experience in the field of optoelectronics, especially in optical sensing. Their extraordinarily broad optoelectronics portfolio includes IR receivers, IR emitters, IrDA transceivers, optocouplers, optical sensors, photodetectors and far more.

However, the scope of this article is Vishay's VCNL series of integrated Proximity-Sensing (PS) and Ambient Light-Sensing (ALS) solutions and their implementation into a robust force-sensing Human-Machine Interface (HMI) application with haptic feedback.

Why choose Vishay's VCNL series of automotive-qualified (AEC-Q101) integrated PS and ALS solutions?

All the necessary components on a single chip, along with high-resolution 12/16-bit ADC converters and signal conditioning circuits, offering orders of magnitude greater performance and precision.
VCNL4030 and VCNL3030 with integrated high power IREDs
VCNL4035 and VCNL3036 with integrated drivers for up to 3 external IREDs.
- High design flexibility due to freely chosen IREDs.
Highly accurate measurements of the order of a few tens of micrometers.
Custom magnetics for implementing haptic feedback, such as Vishay´s compact IHPT-1411AF-AB0 solenoid with a static "U" core and moving "I" bar.
The actuator can drive a load of 0.5 kg up to an acceleration of 6 g using 12 V and 5 ms pulses.

Additional info

The VCNL series includes an ASIC with a feature-rich DSP section, allowing seamless operation when used with haptic actuators. The integrated DSP offers functions such as proximity cancellation, internal averaging, threshold-driven interrupts, selectable measurement rate and more.

Providing developers with tools to easily implement haptic feedback and perform precise system calibration even on low-cost and low-end MCU processing platforms.

Combined with a haptic feedback actuator, the VCNL series can be used to develop HMIs with high reliability, consume less power, last longer and providing satisfying tactile feedback during operation.

As part of their comprehensive support for the VCNL series, Vishay also offers a stand-alone force-sensing demonstrator based on the VCNL4030X01 sensor. The demonstrator can be used as a proof of concept and a reference for custom designs.

NPIs / Product highlights

VCNL3036X01	VCNL4030X01	IHPT-1411AF-AB0
Benefits	Features	Benefits	Features	Benefits	Features
Integrated emitter and detector Up to 30 cm distance Multiple slave addresses Best in class proximity signal AEC-Q101 qualified Interrupt function	Selectable 12 / 16-bit proximity signal Low profile of 0,75 mm Increased output versus VCNL4030X01 • Force feedback resolution down to 20 µm No IR Cut filter No IR Pass filter No ALS Filtron	Fully integrated PS solution Up to 30 cm distance Best in class proximity signal Low power consumption I2C (SMBus compatible) interface VCNL3030X01 cost saving alternative without FiltronTM/ALS	Integrated emitter and detector Selectable 12 / 16-bit proximity signal Low profile of 0,75 mm Force feedback resolution down to 20 µm Multiple slave adresses Interrupt function AEC-Q101 qualified	Compact, two-piece construction with mounting holes Stationary “U” core and moving “I-bar” for easy implementation in touch screen or touch button application Customer specific connectors available upon request	Solenoid construction provides high impulse vibration for clear tactile feedback in noisy environments This IHPT device can drive up to a 0.5 kg load to 6 g’s of acceleration with a 12 V, 5 ms pulse using Vishay’s spring return test fixture Standard lead termination is dipped 100 % tin solder

VCNL3036X01

VCNL4030X01

IHPT-1411AF-AB0

Benefits

Features

Benefits

Features

Benefits

Features

Integrated emitter and detector
Up to 30 cm distance
Multiple slave addresses
Best in class proximity signal
AEC-Q101 qualified
Interrupt function

Selectable 12 / 16-bit proximity signal
Low profile of 0,75 mm
Increased output versus VCNL4030X01 • Force feedback resolution down to 20 µm
No IR Cut filter
No IR Pass filter
No ALS Filtron

Fully integrated PS solution
Up to 30 cm distance
Best in class proximity signal
Low power consumption I2C (SMBus compatible) interface
VCNL3030X01 cost saving alternative without FiltronTM/ALS

Integrated emitter and detector
Selectable 12 / 16-bit proximity signal
Low profile of 0,75 mm
Force feedback resolution down to 20 µm
Multiple slave adresses
Interrupt function
AEC-Q101 qualified

Compact, two-piece construction with mounting holes
Stationary “U” core and moving “I-bar” for easy implementation in touch screen or touch button application
Customer specific connectors available upon request

Solenoid construction provides high impulse vibration for clear tactile feedback in noisy environments
This IHPT device can drive up to a 0.5 kg load to 6 g’s of acceleration with a 12 V, 5 ms pulse using Vishay’s spring return test fixture
Standard lead termination is dipped 100 % tin solder

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