DESCRIPTION
The TSSP4P38 is a compact infrared detector module
for proximity sensing applications. It receives 38 kHz
modulated signals and has a peak sensitivity of 940 nm.
The length of the detector’s output pulse varies in proportion
to the amount of light reflected from the object being
detected.

FEATURES
• Up to 2 m for proximity sensing
• Uses modulated bursts at 38 kHz
• Photo detector and preamplifier in one package
• Low supply current
• Shielding against EMI
• Visible light is suppressed by IR filter
• Insensitive to supply voltage ripple and noise
• Supply voltage: 2.0 V to 5.5 V
• Material categorization: for definitions of
compliance please see www.vishay.com/doc?99912

APPLICATIONS
• Object approach detection for activation of displays and
user consoles, signaling of alarms, etc.
• Simple gesture controls
• Differentiation of car arrival, static, car departure in
parking lots
• Reflective sensors for toilet flush
• Navigational sensor for robotics

DESIGN SUPPORT TOOLS
• 3D models
• Window size calculator