Summary of Angle Sensing with Circular Vertical Hall Technology
Allegro Microsystems' A1330 is a magnetic Circular Vertical Hall (CVH) angle sensor designed for high-speed industrial and automotive applications. It eliminates the need for concentrators, reducing costs while offering programmable scaling for mechanical failure detection. Key features include an on-chip EEPROM for calibration, adjustable internal averaging to balance speed and resolution, and superior immunity to parasitic fields. Operating at 3 V with reverse battery protection, it suits fuel level sensing, pedal switches, and parking brakes, available in lead-free 8-pin TSSOP packaging.
Parts used in the A1330 Angle Sensor:
- CHV front end
- Digital processing unit
- Analog output driver
- On-chip EEPROM technology
- Current regulator
- Reverse battery protection circuit
- Overvoltage protection circuit
- Lead free package
- 8 pin TSSOP standard packaging
Angle sensing has always been challenging particularly in industrial and automotive environment because of the need for precise and accurate sensing at high speeds. Allegro Microsystems developed the A1330 an integrated circuit angle sensor that works based on magnetic Circular Vertical Hall (CVH) technology. Unlike other angle sensors Allegro’s A1330 does not require a concentrator or a complex packaging assembly which results in lower costs.
The A1330 SoC (system on chip) include a CHV front end, digital processing, and analog output driver, and an on-chip EEPROM technology that allows up to 100 read/write cycles. This allows customer to program and calibrate parameters easily. Additionally, it has adjustable internal averaging that allows respond time to be traded for resolution. On the other hand, with averaging not enabled A1330 provides fast analog response time.
All the characteristic mentioned above makes the sensor ideal for low rotational velocities with high precision. The fact that angle scaling can be programmed allows for easy detection of mechanical failures by selecting minimum and maximum angle values that when surpassed might mean a problem.
In automotive industry hall sensors are used for fuel level, brake and clutch pedal switches, electronic parking brakes and much more. The advantage that the A1330 offers is higher immunity to parasitic fields and it can support higher target magnetic field levels (since it measures phase not amplitude). Also, it offers better temperature drifts performance which is an advantage in automotive industry where temperatures can get high. Its operational voltage is 3 V and its magnetic sensing is parallel to surface of the package, it has a current regulator for two wire operation, and a reverse battery and overvoltage protection. The package is lead free and A1330 is available as either single- or dual die option in a 8 pin TSSOP standard packaging. All the complete specifications can be found in Allegro´s website.
Read more: Angle Sensing with Circular Vertical Hall Technology
The A1330 SoC (system on chip) include a CHV front end, digital processing, and analog output driver, and an on-chip EEPROM technology that allows up to 100 read/write cycles. This allows customer to program and calibrate parameters easily. Additionally, it has adjustable internal averaging that allows respond time to be traded for resolution. On the other hand, with averaging not enabled A1330 provides fast analog response time.
All the characteristic mentioned above makes the sensor ideal for low rotational velocities with high precision. The fact that angle scaling can be programmed allows for easy detection of mechanical failures by selecting minimum and maximum angle values that when surpassed might mean a problem.
In automotive industry hall sensors are used for fuel level, brake and clutch pedal switches, electronic parking brakes and much more. The advantage that the A1330 offers is higher immunity to parasitic fields and it can support higher target magnetic field levels (since it measures phase not amplitude). Also, it offers better temperature drifts performance which is an advantage in automotive industry where temperatures can get high. Its operational voltage is 3 V and its magnetic sensing is parallel to surface of the package, it has a current regulator for two wire operation, and a reverse battery and overvoltage protection. The package is lead free and A1330 is available as either single- or dual die option in a 8 pin TSSOP standard packaging. All the complete specifications can be found in Allegro´s website.
Read more: Angle Sensing with Circular Vertical Hall Technology
- How does the A1330 reduce manufacturing costs?
It does not require a concentrator or complex packaging assembly. - Can users program parameters on the A1330?
Yes, on-chip EEPROM technology allows up to 100 read/write cycles for easy programming and calibration. - Does the A1330 support trade-offs between response time and resolution?
Yes, adjustable internal averaging allows users to trade response time for resolution. - What makes the A1330 ideal for detecting mechanical failures?
Programmable angle scaling allows selection of minimum and maximum angle values to identify problems. - Why is the A1330 advantageous in high-temperature automotive environments?
It offers better temperature drift performance compared to other sensors. - How does the A1330 handle parasitic magnetic fields?
It provides higher immunity to parasitic fields because it measures phase rather than amplitude. - What voltage does the A1330 operate at?
The operational voltage is 3 V. - Is the A1330 package lead free?
Yes, the package is lead free.
