Overview
The DRV5055A3EDBZRQ1 is a ratiometric linear Hall effect sensor produced by Texas Instruments. This device is part of the DRV5055-Q1 family and is designed for accurate position sensing in various automotive and industrial applications. It operates from either 3.3V or 5V power supplies and provides an analog output that is proportional to the magnetic flux density. The sensor features a ratiometric architecture, which helps in eliminating errors due to VCC tolerance, making it suitable for use with external analog-to-digital converters (ADCs) that use the same VCC as their reference.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Power Supply Voltage (VCC) | 3 | - | 5.5 | V |
| Operating Ambient Temperature (TA) | -40 | - | 150 | °C |
| Output Continuous Current (IO) | -1 | - | 1 | mA |
| Quiescent Voltage (VQ) at VCC = 3.3V | 1.59 | 1.65 | 1.71 | V |
| Quiescent Voltage (VQ) at VCC = 5V | 2.43 | 2.5 | 2.57 | V |
| Sensitivity at VCC = 3.3V (DRV5055A3) | 14.3 | 15 | 15.8 | mV/mT |
| Sensitivity at VCC = 5V (DRV5055A3) | 23.8 | 25 | 26.2 | mV/mT |
| Linear Magnetic Sensing Range at VCC = 3.3V (DRV5055A3) | -88 | - | 88 | mT |
| Linear Magnetic Sensing Range at VCC = 5V (DRV5055A3) | -85 | - | 85 | mT |
| Power-On Time (tON) | 175 | - | 330 | µs |
| Sensing Bandwidth (fBW) | - | - | 20 | kHz |
| Propagation Delay Time (td) | - | - | 10 | µs |
Key Features
- Ratiometric Linear Hall Effect Sensor: The device provides an analog output that is proportional to the magnetic flux density and scales linearly with the power supply voltage.
- Operating Voltage: Operates from 3.3V to 5V power supplies with two isolated operating ranges (3V to 3.63V and 4.5V to 5.5V).
- Temperature Compensation: Features magnet temperature compensation to counteract the effects of temperature on magnet performance, ensuring linear performance across a wide temperature range (-40°C to +150°C).
- Low Noise and High Accuracy: Offers low output-referred noise and high sensitivity linearity, making it suitable for precise position sensing applications.
- Compact Packages: Available in SOT-23 (DBZ) and TO-92 (LPG) packages, providing different sensing directions.
- Wire Fault Detection: Supports wire fault detection by monitoring the output voltage to detect open or shorted interconnect wires.
Applications
- Acceleration and Clutch Pedals: Used in automotive applications for sensing acceleration and clutch pedal positions.
- Torque Sensors: Suitable for torque sensing in various mechanical systems.
- Gear Shifters and Throttle Position: Applied in gear shifters and throttle position sensing.
- Height Leveling and Powertrain Components: Used in height leveling systems and powertrain components.
- Absolute Angle Encoding: Utilized for absolute angle encoding in various industrial and automotive applications.
- Current Sensing: Can be used for current sensing applications due to its linear response to magnetic fields.
Q & A
- What is the operating voltage range of the DRV5055A3EDBZRQ1?
The DRV5055A3EDBZRQ1 operates from 3.3V to 5V power supplies, with two isolated operating ranges: 3V to 3.63V and 4.5V to 5.5V.
- What is the quiescent voltage of the DRV5055A3EDBZRQ1 at 3.3V and 5V?
The quiescent voltage is approximately 1.65V at 3.3V and 2.5V at 5V.
- What is the sensitivity of the DRV5055A3EDBZRQ1 at 3.3V and 5V?
The sensitivity is approximately 15 mV/mT at 3.3V and 25 mV/mT at 5V for the DRV5055A3 option.
- What is the linear magnetic sensing range of the DRV5055A3EDBZRQ1?
The linear magnetic sensing range is ±88 mT at 3.3V and ±85 mT at 5V for the DRV5055A3 option.
- How does the DRV5055A3EDBZRQ1 handle temperature variations?
The device features magnet temperature compensation to ensure linear performance across a wide temperature range (-40°C to +150°C).
- What are the package options for the DRV5055A3EDBZRQ1?
The device is available in SOT-23 (DBZ) and TO-92 (LPG) packages.
- Can the DRV5055A3EDBZRQ1 detect wire faults?
Yes, the device supports wire fault detection by monitoring the output voltage to detect open or shorted interconnect wires.
- What is the power-on time of the DRV5055A3EDBZRQ1?
The power-on time (tON) is between 175 µs and 330 µs.
- What is the sensing bandwidth of the DRV5055A3EDBZRQ1?
The sensing bandwidth (fBW) is up to 20 kHz.
- What is the propagation delay time of the DRV5055A3EDBZRQ1?
The propagation delay time (td) is approximately 10 µs.
