Overview
The DRV5055A1QLPG 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 a wide range of applications. It operates from either 3.3-V or 5-V power supplies and provides an analog output that is referenced to VCC. The sensor features a ratiometric architecture, which helps eliminate errors from VCC tolerance, and includes temperature compensation to maintain linear performance across a 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 |
| Operating Supply Current (ICC) | 6 | 10 | - | 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 VCC = 5 V, 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.
- Dual Power Supply Compatibility: Operates from 3.3-V and 5-V power supplies.
- Analog Output: Outputs an analog voltage proportional to the applied magnetic flux density, with a quiescent offset of VCC / 2.
- Temperature Compensation: Includes magnet temperature compensation to maintain linear performance across a wide temperature range.
- Low Noise and High Sensitivity: Features low output-referred noise and high sensitivity options.
- Compact Packages: Available in SOT-23 and TO-92 packages.
- Wide Operating Temperature Range: Functional from –40°C to 125°C.
Applications
- Fluid Flow Rate Measurement: Used in applications requiring precise measurement of fluid flow rates.
- Medical Devices: Suitable for use in medical devices due to its high accuracy and reliability.
- Absolute Angle Encoding: Ideal for applications requiring precise angle measurement.
- Current Sensing: Can be used for current sensing in various electrical systems.
Q & A
- What is the operating voltage range of the DRV5055A1QLPG?
The DRV5055A1QLPG operates from 3.3-V to 5-V power supplies, with two recommended ranges: 3 V to 3.63 V and 4.5 V to 5.5 V.
- What is the typical quiescent voltage of the DRV5055A1QLPG?
The typical quiescent voltage is half of VCC, which is around 2.5 V for a 5-V supply and 1.65 V for a 3.3-V supply.
- What is the sensitivity of the DRV5055A1QLPG at 25°C?
The sensitivity at 25°C is typically 100 mV/mT for VCC = 5 V.
- What is the linear magnetic sensing range of the DRV5055A1QLPG?
The linear magnetic sensing range is ±21 mT at VCC = 5 V and TA = 25°C.
- Does the DRV5055A1QLPG have temperature compensation?
Yes, it includes magnet temperature compensation to maintain linear performance across a wide temperature range.
- What are the available package options for the DRV5055A1QLPG?
The device is available in SOT-23 and TO-92 packages.
- What is the operating ambient temperature range of the DRV5055A1QLPG?
The device operates from –40°C to 125°C.
- How long does the DRV5055A1QLPG take to power on?
The power-on time (tON) is typically 175 to 330 µs.
- What is the sensing bandwidth of the DRV5055A1QLPG?
The sensing bandwidth is 20 kHz.
- What are some common applications of the DRV5055A1QLPG?
Common applications include fluid flow rate measurement, medical devices, absolute angle encoding, and current sensing.
