A1454 Linear Sensor: Datasheet, Typical Application Circuit, Advantage
SENSOR LINEAR I2C 8TSSOP
This article will unlock more details about the A1454, 3 V Hall-effect linear Sensor with I2C output.
A1454 Pinout

A1454 Pinout
| Pin #8-Pin TSSOP | Function | Description |
| 1 | VCC | Device Supply Voltage Pin |
| 2 | ADRO | Address Select Pin 0 |
| 3 | GND | Device Ground Pin |
| 4 | NC | No Connection |
| 5 | NC | No Connection |
| 6 | ADR1 | Address Select Pin1 |
| 7 | SDA | 1PC interface SDA Pin |
| 8 | SCL | P2C interface SCL Pin |
Pin Description
A1454 Description
The A1454 linear Hall-effect sensor IC provides a 12-bit digital output word that is proportional to the strength of the magnetic field that is present.
Its quiescent output value is at mid-scale, and it comes in two different factory-programmed sensitivity ranges: 2 LSB/G and 4 LSB/G. The sensitivity temperature coefficient is also factory-programmed to support either neodymium or ferrite magnets.
Specifications
- TypeParameter
- Factory Lead Time8 Weeks
- Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
8-TSSOP (0.173, 4.40mm Width) - Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Number of Pins8
- Published2015
- Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tape & Reel (TR) - Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~125°C TA - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
2 (1 Year) - Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
2.65V~3.5V - Output Type
The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.
I2C - Max Supply Current
Max Supply Current refers to the maximum amount of electrical current that a component can draw from its power supply under normal operating conditions. It is a critical parameter that ensures the component operates reliably without exceeding its thermal limits or damaging internal circuitry. Exceeding this current can lead to overheating, performance degradation, or failure of the component. Understanding this parameter is essential for designing circuits that provide adequate power while avoiding overload situations.
5mA - Sensing Method
The sensing method in electronic components refers to the technique or mechanism used to detect and measure physical phenomena such as temperature, pressure, light, or motion. This includes a variety of technologies such as resistive, capacitive, inductive, and optical sensing methods. The choice of sensing method affects the accuracy, response time, and application suitability of the electronic component. It plays a crucial role in determining how effectively a device can interact with and interpret its environment.
Hall Effect - Axis
In electronic components, the parameter "Axis" typically refers to the orientation or direction along which a specific characteristic or measurement is being considered. For example, in a sensor or accelerometer, the axis may indicate the direction in which the device is measuring acceleration. In a motor or actuator, the axis may refer to the direction of movement or rotation.Understanding the axis of a component is crucial for proper installation, calibration, and operation. It helps in determining how the component will interact with other parts of a system and how its performance can be optimized. Different components may have multiple axes to consider, especially in complex systems where movement or measurements occur in multiple directions.Overall, the axis parameter provides important information about the spatial orientation or directionality of an electronic component, guiding engineers and technicians in effectively utilizing the component within a larger system.
Single - Features
In the context of electronic components, the term "Features" typically refers to the specific characteristics or functionalities that a particular component offers. These features can vary depending on the type of component and its intended use. For example, a microcontroller may have features such as built-in memory, analog-to-digital converters, and communication interfaces like UART or SPI.When evaluating electronic components, understanding their features is crucial in determining whether they meet the requirements of a particular project or application. Engineers and designers often look at features such as operating voltage, speed, power consumption, and communication protocols to ensure compatibility and optimal performance.In summary, the "Features" parameter in electronic components describes the unique attributes and capabilities that differentiate one component from another, helping users make informed decisions when selecting components for their electronic designs.
Sleep Mode, Temperature Compensated - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant
A1454 Features
• 1 mm thin 8-pin TSSOP package
• Two factory-programmed sensitivity options:
□ 2 LSB/G (for fields up to ±1000 G)
□ 4 LSB/G (±500 G)
• Temperature-stable sensitivity for NdFeB and ferrite magnets
• I2C interface for easy integration, with support for up to 127 unique addresses
• EEPROM stores factory-programmed settings and up to 26 bits of user information (programmable through the I2C interface)
• Micro-power sleep mode through I2C command for minimizing power in battery-operated applications
• Precise recoverability after temperature cycling
• Wide ambient temperature range: –40°C to 125°C
• 12-bit ADC with 10-bit ENOB (Effective Number of Bits)
The Advantages of A1454
The A1454 I2C interface provides a user-controlled sleep input command that puts the device in micro-power mode, which reduces the current consumption of the A1454. This low power feature makes the A1454 perfect for portable, battery-operated applications
A1454 Functional Block Diagram

A1454 Functional Block Diagram
A1454 Typical Application Circuit

A1454 Typical Application circuit
A1454 Manufacturer
As a leading company in the development, manufacture and market of high-performance semiconductors, Allegro MicroSystems, LLC provides high-growth applications for the automotive market and also stays focus on consumer/communications, automation and industrial solutions. Headquartered in Worcester, Massachusetts (USA) Allegro locates its design, applications and sales support centres worldwide.
A1454 Package

A1454 Package
Datasheet PDF
- Datasheets :
Popularity by Region
What is A1454?
The A1454 linear Hall-effect sensor IC provides a 12-bit digital output word that is proportional to the strength of the magnetic field that is present. Its quiescent output value is at mid-scale, and it comes in two different factory-programmed sensitivity ranges: 2 LSB/G and 4 LSB/G. The sensitivity temperature coefficient is also factory-programmed to support either neodymium or ferrite magnets.
What advantage does A1454 have?
The A1454 I2C interface provides a user-controlled sleep input command that puts the device in micro-power mode, which reduces the current consumption of the A1454. This low power feature makes the A1454 perfect for portable, battery-operated applications.
What package is the A1454 available in?
It is available in an 8-pin TSSOP package.
What does the A1454 incorporate for easy integration into a wide variety of applications?
The A1454 incorporates an I2C interface for easy integration into a wide variety of applications.
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