Overview
The DRV5055A1QDBZR is a ratiometric linear Hall effect sensor produced by Texas Instruments. This device is designed to respond proportionally to magnetic flux density, making it suitable for accurate position sensing in various applications. It operates from either 3.3-V or 5-V power supplies and provides an analog output that is referenced to VCC, with the output changing linearly with the applied magnetic flux density.
The DRV5055 features fully integrated signal conditioning, temperature compensation circuits, mechanical stress cancellation, and amplifiers. It is available in two package options: SOT-23 (DBZ) and TO-92 (LPG), each with different sensing directions. The device is robust, operating over a wide temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VCC (Power-supply voltage) | 3 | 5.5 | V | |
| Operating ambient temperature (TA) | –40 | 125 | °C | |
| Output continuous current (IO) | –1 | 1 | mA | |
| Power-on time (tON) | 175 | 330 | µs | |
| Sensing bandwidth (fBW) | 20 | kHz | ||
| Propagation delay time (td) | 10 | µs | ||
| Sensitivity (at VCC = 5 V, TA = 25°C) | 95 | 100 | 105 | mV/mT |
| Linear magnetic sensing range (at VCC = 5 V, TA = 25°C) | ±21 | mT | ||
| Quiescent voltage (VQ) at B = 0 mT, TA = 25°C | 2.43 | 2.5 | 2.57 | V |
Key Features
- Ratiometric Linear Hall Effect Sensor: Responds proportionally to magnetic flux density.
- Power Supply Flexibility: Operates from 3.3-V and 5-V power supplies.
- Analog Output: Provides an analog output with VCC/2 quiescent offset.
- Magnetic Sensitivity Options: Four sensitivity options (A1/Z1, A2/Z2, A3/Z3, A4/Z4) with different ranges.
- Fast Sensing Bandwidth: 20-kHz sensing bandwidth.
- Low-Noise Output: Low-noise output with ±1-mA drive capability.
- Temperature Compensation: Compensation for magnet temperature drift in A1/A2/A3/A4 versions.
- Package Options: Available in SOT-23 (DBZ) and TO-92 (LPG) packages.
- Ratiometric Architecture: Eliminates error from VCC tolerance when used with an external ADC referencing the same VCC.
Applications
- Position Sensing: Accurate position sensing in various applications.
- Fluid Flow Rate Measurement: Measurement of fluid flow rates.
- Medical Devices: Used in medical devices for precise measurements.
- Absolute Angle Encoding: Encoding of absolute angles.
- Current Sensing: Sensing of current in electrical systems.
Q & A
- What is the operating voltage range of the DRV5055?
The DRV5055 operates from 3.3-V to 3.63-V and 4.5-V to 5.5-V power supplies.
- What is the typical quiescent voltage of the DRV5055 at 25°C?
The quiescent voltage at 25°C is typically 2.5 V when VCC is 5 V and 1.65 V when VCC is 3.3 V.
- What are the available package options for the DRV5055?
The DRV5055 is available in SOT-23 (DBZ) and TO-92 (LPG) packages.
- What is the sensing bandwidth of the DRV5055?
The sensing bandwidth is 20 kHz.
- Does the DRV5055 have temperature compensation for magnets?
- What is the propagation delay time of the DRV5055?
The propagation delay time is 10 µs.
- How many sensitivity options are available for the DRV5055?
There are four sensitivity options: A1/Z1, A2/Z2, A3/Z3, and A4/Z4.
- What is the operating temperature range of the DRV5055?
The operating temperature range is –40°C to 125°C.
- Does the DRV5055 have a ratiometric architecture?
- What is the typical power-on time of the DRV5055?
The typical power-on time is 330 µs.
