Overview
The DRV5055A2QDBZR is a ratiometric linear Hall effect sensor produced by Texas Instruments. This device responds 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 features an analog output with a quiescent offset of VCC/2. The sensor is available in various sensitivity options and includes magnet temperature compensation to ensure linear performance across a temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| VCC (Power-supply voltage) | 3 | 5.5 | V | ||
| IO (Output continuous current) | -1 | 1 | mA | ||
| TA (Operating ambient temperature) | -40 | 125 | °C | ||
| fBW (Sensing bandwidth) | 20 | kHz | |||
| td (Propagation delay time) | From change in B to change in OUT | 10 | µs | ||
| S (Sensitivity) | VCC = 5 V, TA = 25°C | 47.5 | 50 | 52.5 | mV/mT |
| BL (Linear magnetic sensing range) | VCC = 5 V, TA = 25°C | ±42 | mT | ||
| RθJA (Junction-to-ambient thermal resistance) | SOT-23 (DBZ) | 170 | °C/W |
Key Features
- Ratiometric Linear Hall Effect Magnetic Sensor: Responds proportionally to magnetic flux density.
- Operates From 3.3-V and 5-V Power Supplies: Flexible power supply options.
- Analog Output With VCC/2 Quiescent Offset: Output drives half of VCC when no magnetic field is present.
- Magnetic Sensitivity Options: Four sensitivity options (A1/Z1, A2/Z2, A3/Z3, A4/Z4) for different sensing ranges.
- Fast 20-kHz Sensing Bandwidth: High-speed sensing capability.
- Low-Noise Output With ±1-mA Drive: Low noise and high drive capability.
- Magnet Temperature Compensation: Compensates for magnet drift to ensure linear performance across a wide temperature range.
- Standard Industry Packages: Available in SOT-23 and TO-92 packages.
Applications
- Fluid Flow Rate Measurement: Can be used to measure fluid flow rates accurately.
- Medical Devices: Suitable for various medical applications requiring precise magnetic sensing.
- Absolute Angle Encoding: Used in applications that require precise angle measurement.
- Current Sensing: Can be employed for current sensing in various electrical systems).
Q & A
- What is the operating voltage range of the DRV5055A2QDBZR?
The DRV5055A2QDBZR operates from 3.3-V to 5.5-V power supplies).
- What is the sensing bandwidth of the DRV5055A2QDBZR?
The sensing bandwidth is 20 kHz).
- What are the available sensitivity options for the DRV5055A2QDBZR?
There are four sensitivity options: A1/Z1, A2/Z2, A3/Z3, and A4/Z4, each with different mV/mT ratings).
- Does the DRV5055A2QDBZR have temperature compensation?
Yes, the device features magnet temperature compensation to counteract magnet drift, except for the Z versions).
- What are the typical package options for the DRV5055A2QDBZR?
The device is available in SOT-23 and TO-92 packages).
- What is the quiescent voltage of the DRV5055A2QDBZR when no magnetic field is present?
The output drives half of VCC when no magnetic field is present).
- How does the ratiometric architecture of the DRV5055A2QDBZR benefit the application?
The ratiometric architecture eliminates error from VCC tolerance when the external ADC uses the same VCC for its reference).
- What is the linear magnetic sensing range for the DRV5055A2QDBZR A2 version?
The linear magnetic sensing range for the A2 version is ±42 mT at VCC = 5 V and TA = 25°C).
- What is the junction-to-ambient thermal resistance for the SOT-23 package?
The junction-to-ambient thermal resistance for the SOT-23 package is 170 °C/W).
- Can the DRV5055A2QDBZR be used in high-temperature environments?
Yes, the device operates over an ambient temperature range of –40°C to 125°C).
