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High-Performance Power ICs and Hall-Effect Sensors
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Datasheets:
A1381, A1382, A1383, and A1384: Programmable Linear Hall Effect Sensors with Analog Output Available in a Miniature Thin Profile Surface Mount Package (PDF)
Selection Guides:
Hall-Effect Sensors,
Linear Hall-Effect Sensors
Press Releases:
A1381, A1382, A1383, and A1384: Allegro Announces A New Family Of User-Programmable, Hall-Effect Linear Sensors In Miniature Packages
Product Evaluation Kits:
ASEK-01 Sensor Evaluation Kit
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A1381, A1382, A1383, and A1384
Programmable Linear Hall Effect Sensors with Analog Output Available
in a Miniature Thin Profile Surface Mount Package
Features and Benefits
- Customer programmable offset, sensitivity, sensitivity temperature coefficient, and polarity
- Programmability at end-of-line
- Ratiometric sensitivity, quiescent voltage output, and clamps for interfacing with application DAC
- Temperature-stable quiescent voltage output and sensitivity
- Precise recoverability after temperature cycling
- Output voltage clamps provide short circuit diagnostic capabilities
- Wide ambient temperature range: β40°C to 150°C
- Immune to mechanical stress
- Miniature package options
Description
New applications for linear output Hall effect sensors, such as displacement, angular position, and current measurement, require high accuracy in conjunction with small package size. The Allegro® A138x family of programmable linear Hall effect sensors was designed specifically to achieve both goals. These temperature-stable devices are available in a miniature surface mount package (SOT23-W) and an ultramini through-hole single-in-line package. The accuracy of these devices is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device.
These ratiometric Hall effect sensors provide a voltage output that is proportional to the applied magnetic field. Both the quiescent voltage output and magnetic sensitivity are user-adjustable. The quiescent voltage output can be set around 50% of the supply voltage, and the sensitivity adjusted between 2 mV/G and 9 mV/G over the device family. Programming selections also exist for output polarity and temperature compensation. The features of this linear family make it ideal for high accuracy requirements of automotive and industrial applications, and performance is guaranteed over an extended temperature range, β40°C to 150°C.
Each BiCMOS monolithic circuit integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique.
The A138x sensors are provided in a 3 pin ultramini single-in-line package (UA suffix), and a 3 pin surface mount SOT-23W package (LH suffix).
Functional Block Diagram
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| A1381ELHLT-T | 3-lead SOT | Yes | view data | -40 °C to 85 °C | |||
| A1381EUA-T | 3-pin SIP | Yes | view data | -40 °C to 85 °C | |||
| A1381EUATI-T | 3-pin SIP | -- | -- | -40 °C to 85 °C | Contact Marketing Representative | ||
| A1381LLHLT-T | 3-lead SOT | Yes | view data | -40 °C to 150 °C | |||
| A1381LUA-T | 3-pin SIP | Yes | view data | -40 °C to 150 °C | |||
| A1381LUATI-T | 3-pin SIP | -- | -- | -40 °C to 150 °C | Contact Marketing Representative | ||
| A1382ELHLT-T | 3-lead SOT | Yes | view data | -40 °C to 85 °C | |||
| A1382EUA-T | 3-pin SIP | Yes | view data | -40 °C to 85 °C | |||
| A1382EUATI-T | 3-pin SIP | -- | -- | -40 °C to 85 °C | Contact Marketing Representative | ||
| A1382LLHLT-T | 3-lead SOT | Yes | view data | -40 °C to 150 °C | |||
| A1382LUA-T | 3-pin SIP | Yes | view data | -40 °C to 150 °C | |||
| A1382LUATI-T | 3-pin SIP | -- | -- | -40 °C to 150 °C | Contact Marketing Representative | ||
| A1383ELHLT-T | 3-lead SOT | Yes | view data | -40 °C to 85 °C | |||
| A1383EUA-T | 3-pin SIP | Yes | view data | -40 °C to 85 °C | |||
| A1383EUATI-T | 3-pin SIP | -- | -- | -40 °C to 85 °C | |||
| A1383LLHLT-T | 3-lead SOT | Yes | view data | -40 °C to 150 °C | |||
| A1383LUA-T | 3-pin SIP | Yes | view data | -40 °C to 150 °C | |||
| A1383LUATI-T | 3-pin SIP | -- | -- | -40 °C to 150 °C | Contact Marketing Representative | ||
| A1384ELHLT-T | 3-lead SOT | Yes | view data | -40 °C to 85 °C | |||
| A1384EUA-T | 3-pin SIP | Yes | view data | -40 °C to 85 °C | |||
| A1384EUATI-T | 3-pin SIP | -- | -- | -40 °C to 85 °C | Contact Marketing Representative | ||
| A1384LLHLT-T | 3-lead SOT | Yes | view data | -40 °C to 150 °C | |||
| A1384LUA-T | 3-pin SIP | Yes | view data | -40 °C to 150 °C | |||
| A1384LUATI-T | 3-pin SIP | -- | -- | -40 °C to 150 °C | Contact Marketing Representative |
Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.