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High-Performance Power ICs and Hall-Effect Sensors
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Datasheets:
A1373 and A1374: High-Precision, Output Pin-Programmable Linear Hall-Effect Sensors (PDF)
Selection Guides:
Hall-Effect Sensors,
Linear Hall-Effect Sensors
Press Releases:
A1373 and A1374: Allegro MicroSystems, Inc. Introduces Low-Cost, Field-Programmable Linear Hall-Effect Sensors
Design Support Tools:
ASEK-01 Sensor Evaluation Kit
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A1373 and A1374
High-Precision, Output Pin-Programmable Linear Hall-Effect Sensors
Features and Benefits
- Output pin programming
- Field-programmable for optimal application integration
- Selectable coarse and fine gain and quiescent output voltage
- Selectable sensitivity temperature coefficient
- Selectable output clamp voltage level, including no-clamp (rail-to-rail)
- Selectable output polarity
- Unipolar or bipolar operation
- Ratiometric sensitivity, clamps, and quiescent output voltage
- Chopper-stabilized Hall technique
- Wide operating temperature range
- On-chip regulator for over/under voltage protection
- On-chip regulator provides EMI robustness
- Wide lead-spacing with KB package
Description
The A1373 and A1374 high precision linear Hall effect sensors are sensitive, temperature stable, linear devices with externally programmable features. This device family incorporates a chopper-stabilized amplifier, voltage regulator, programming logic, and an output amplifier on a single IC. The patented dynamic offset cancellation used with a chopper-stabilization technique provides extremely low offset and minimal temperature drift. A high frequency clock is used for chopping, to ensure high frequency signal processing capability. The A1373 and A1374 are ideal for use in automotive and industrial linear position-sensing applications that require increased reliability and accuracy over conventional contacting-potentiometer solutions. Key applications include: throttle position sensors, pedal position sensors, and suspension height sensors.
The design and manufacturing flexibility of the A1373 and A1374 complement the Allegro linear Hall effect family of devices by offering programmable gain, quiescent offset voltage for unipolar or bipolar operation, temperature coefficient, clamps, and polarity. The device can be set up in a magnetic circuit and programmed with a train of serial pulses via the output pin. Once the right combination of gain, quiescent output voltage, and temperature coefficient has been selected, the codes can be locked for one-time programming. In this manner, manufacturing tolerances can be reduced and the assembly process can be simplified.
These devices are available in the KB package, a 3-pin SIP (single inline package). The lead (Pb) free version has a 100% matte tin plated leadframe.
Functional Block Diagram
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| A1373EKB-T | 3-pin SIP | Yes | view data | -40 °C to 85 °C | |||
| A1373EKBTI-T | 3-pin SIP | -- | -- | -40 °C to 85 °C | Contact Marketing Representative | ||
| A1373LKB-T | 3-pin SIP | Yes | view data | -40 °C to 150 °C | |||
| A1373LKBTI-T | 3-pin SIP | -- | -- | -40 °C to 150 °C | Contact Marketing Representative | ||
| A1374EKB-T | 3-pin SIP | Yes | view data | -40 °C to 85 °C | |||
| A1374EKBTI-T | 3-pin SIP | -- | -- | -40 °C to 85 °C | Contact Marketing Representative | ||
| A1374LKB-T | 3-pin SIP | Yes | view data | -40 °C to 150 °C | |||
| A1374LKBTI-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.