A1120LLHLX-T
Allegro MicroSystems
ICPlanet
Digital Switch Unipolar Switch Open Drain Hall Effect SOT-23W
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TYPE | DESCRIPTION |
---|---|
Category | Sensors, Transducers Magnetic Sensors - Switches (Solid State) |
Mfr | Allegro MicroSystems |
Series | Automotive, AEC-Q100 |
Package | Tape & Reel (TR) |
Part Status | Active |
Function | Unipolar Switch |
Technology | Hall Effect |
Polarization | South Pole |
Sensing Range | 5mT Trip, 0.5mT Release |
Test Condition | -40°C ~ 150°C |
Voltage - Supply | 3V ~ 24V |
Current - Supply (Max) | 4mA |
Current - Output (Max) | 25mA |
Output Type | Open Drain |
Features | - |
Operating Temperature | -40°C ~ 150°C (TA) |
Mounting Type | Surface Mount |
Supplier Device Package | SOT-23W |
Package / Case | SOT-23W |
FEATURES AND BENEFITS
▪ AEC-Q100 automotive qualified
▪ Unipolar switch points
▪ Resistant to physical stress
▪ Superior temperature stability
▪ Output short-circuit protection
▪ Operation from unregulated supply
▪ Reverse-battery protection
▪ Solid-state reliability
▪ Small package sizes
DESCRIPTION
The A1120, A1121, A1122, A1123, and A1125 Hall-effect unipolar switches are extremely temperature-stable and stress-resistant sensor ICs, especially suited for operation over extended temperature ranges to 150°C. Superior hightemperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.
Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 mA.
An on-board regulator permits operation with supply voltages of 3 to 24 V. The advantage of operating down to 3 V is that the device can be used in 3 V applications or with additional external resistance in series with the supply pin for greater protection against high-voltage transient events.
For the A1120, A1121, A1122, and A1123, a south pole of sufficient strength turns the output on. Removal of the magnetic field turns the output off. The A1125 is complementary, in that for these devices, a south pole turns the A1125 output off, and removal of the magnetic field turns the output on.
Two package styles provide a magnetically optimized package for most applications. Package type LH is a modified SOT23W, surface-mount package, while UA is a three-lead ultra-mini SIP for through-hole mounting. Each package type is lead (Pb) free (suffix, –T), with a 100% matte-tin-plated leadframe.
TYPE | DESCRIPTION |
---|---|
Category | Sensors, Transducers Magnetic Sensors - Switches (Solid State) |
Mfr | Allegro MicroSystems |
Series | Automotive, AEC-Q100 |
Package | Tape & Reel (TR) |
Part Status | Active |
Function | Unipolar Switch |
Technology | Hall Effect |
Polarization | South Pole |
Sensing Range | 5mT Trip, 0.5mT Release |
Test Condition | -40°C ~ 150°C |
Voltage - Supply | 3V ~ 24V |
Current - Supply (Max) | 4mA |
Current - Output (Max) | 25mA |
Output Type | Open Drain |
Features | - |
Operating Temperature | -40°C ~ 150°C (TA) |
Mounting Type | Surface Mount |
Supplier Device Package | SOT-23W |
Package / Case | SOT-23W |
FEATURES AND BENEFITS
▪ AEC-Q100 automotive qualified
▪ Unipolar switch points
▪ Resistant to physical stress
▪ Superior temperature stability
▪ Output short-circuit protection
▪ Operation from unregulated supply
▪ Reverse-battery protection
▪ Solid-state reliability
▪ Small package sizes
DESCRIPTION
The A1120, A1121, A1122, A1123, and A1125 Hall-effect unipolar switches are extremely temperature-stable and stress-resistant sensor ICs, especially suited for operation over extended temperature ranges to 150°C. Superior hightemperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.
Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 mA.
An on-board regulator permits operation with supply voltages of 3 to 24 V. The advantage of operating down to 3 V is that the device can be used in 3 V applications or with additional external resistance in series with the supply pin for greater protection against high-voltage transient events.
For the A1120, A1121, A1122, and A1123, a south pole of sufficient strength turns the output on. Removal of the magnetic field turns the output off. The A1125 is complementary, in that for these devices, a south pole turns the A1125 output off, and removal of the magnetic field turns the output on.
Two package styles provide a magnetically optimized package for most applications. Package type LH is a modified SOT23W, surface-mount package, while UA is a three-lead ultra-mini SIP for through-hole mounting. Each package type is lead (Pb) free (suffix, –T), with a 100% matte-tin-plated leadframe.