全极型霍尔元件.替代IA5130T.LN4915.DH248、248**. MLX90248.248

General Description
Special CMOS process is used for low-voltage and
low-power requirement. A chopper stabilized
amplifier improves stability of magnetic switch points.
The circuit design provides an internally controlled
clocking mechanism to cycle power to the Hall sensor
and analog signal processing circuits. This serves to
place the high current-consuming portions of the
circuit into a “Sleep” mode. Periodically the device is
“Awakened” by this internal logic and the magnetic
flux from the Hall sensor is evaluated against the
predefined thresholds. If the flux density is above or
below the BOP/BRP thresholds then the output
transistor is driven to change states accordingly.
While in the “Sleep” cycle the output transistor is
latched in its previous state. The design has been
optimized for service in applications requiring
extended operating lifetime in battery powered
systems.
The IC switching behaviour is omnipolar, either north
or south pole sufficient strength will turn the output
on. If the magnetic flux density is larger than
operating point (BOP), the output will be turned on; if
it is less than releasing point (BRP), the output will be
turned off.
 Features
• On Chip Hall Effect Sensor
Applications
•
•

• Micropower Operation
• 2.5 to 5.5V Power Supply
• Chopper Stabilized amplifier stage
• Superior Temperature Stability
• Digital Output Signal
Switching for Both Poles of a Magnet
• Built-in Pull-up Resistor (GH1248/GH1250)
•
Solid State Switch
Handheld Wireless Handset Awake Switch
Lid close sensor for battery-powered devices
Magnet proximity sensor for reed switch
replacement in low duty cycle applications
•
•
Figure 1. Package Type of GH1248/1250/1253


SIP-3L(TO-92S)
SOT23-3L
• Push-Pull CMOS Output Stage(GH1253)
The GH1248/1250/1253 is an ultra-sensitive
Hall-effect omnipolar switch IC with digital latched
output, mainly designed for battery-operation,
hand-held equipment. The GH1248/1250/1253 is available in SIP-3L (or
TO-92S), SOT23-3L packages which are optimized
for most applications.
The DFN1616-3 package is another optional type

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