SS311PT Datasheet, PDF (1/4 Pages) Honeywell Solid State Electronics Center – Bipolar Hall-Effect Digital Position Sensors with Built-in Pull-up Resistor

SS311PT/SS411P
Bipolar Hall-effect Digital
Position Sensors with Built-in
Pull-up Resistor
DESCRIPTION
The SS311PT/SS411P sensors are small, versatile digital Hall-
effect devices that are operated by the magnetic field from a
permanent magnet or an electromagnet, designed to respond
to alternating North and South poles.
These bipolar sensors have enhanced sensitivity which allows
for the use of smaller, often less expensive magnets. The
internal pull-up resistor often eliminates the need for external
components, further helping to reduce system cost. These
economical bipolar sensors are suited for many simple, high-
volume, cost-sensitive, rotary sensing applications.
The 2.7 Vdc to 7 Vdc supply voltage range allows this device
to be used in low voltage applications. The S311PT’s very
small size requires less PCB (printed circuit board) space,
allowing it to be used in smaller assemblies.
These sensors are available in two package styles: the
SS311PT in the subminiature SOT-23 surface mount package
and the SS411P in the leaded, flat TO-92-style package.
The SS311PT is available on tape and reel (3000 units per
reel); the SS411P is available in a bulk package (1000 units
per bag).
FEATURES
• Subminiature, SOT-23 surface mount package (SS311PT)
supplied on tape and reel allows for a compact design with
automated component placement, helping to reduce
manufacturing costs
• Small, leaded, flat TO-92 package (SS411P) often allows
for more space on the PCB
• Sensitive, bipolar magnetics respond to alternating North
and South poles, making these products suited for speed
sensing and RPM measurement
• Built-in pull-up resistor can easily interface with common
electronic circuits without adding external components,
helping to reduce total system cost
• RoHS-compliant materials meet Directive 002/95/EC
POTENTIAL APPLICATIONS
Transportation:
• Speed and RPM (revolutions per minute) sensing
• Tachometer, counter pickup
• Motor and fan control
• Brushless dc motor control
Industrial and Commercial:
• Speed and RPM (revolutions per minute) sensing
• Tachometer, counter pickup
• Flow-rate sensing
• Brushless dc (direct current) motor commutation
• Motor and fan control
• Robotics control