DRV5012AEDMRR.A中文资料德州仪器数据手册PDF规格书

1 Features

1• Industry-Leading Low-Power Consumption

• Pin-Selectable Sampling Rate:

– SEL = Low: 20 Hz Using 1.3 μA (1.8 V)

– SEL = High: 2.5 kHz Using 142 μA (1.8 V)

• 1.65- to 5.5-V Operating VCC Range

• High Magnetic Sensitivity: ±2 mT (Typical)

• Robust Hysteresis: 4 mT (Typical)

• Push-Pull CMOS Output

• Small and Thin X2SON Package

• –40°C to +85°C Operating Temperature Range

2 Applications

• Brushless DC Motor Sensors

• Incremental Rotary Encoding:

– Motor Speed

– Mechanical Travel

– Fluid Measurement

– Knob Turning

– Wheel Speed

• Portable Medical Devices

• E-Locks, E-Bikes, Motorized Blinds

• Flow Meters

• Contactless Activation

3 Description

The DRV5012 device is an ultra-low-power digitallatch

Hall effect sensor with a pin-selectable sampling

rate.

When a south magnetic pole is near the top of the

package and the BOP threshold is exceeded, the

device drives a low voltage. The output stays low until

a north pole is applied and the BRP threshold is

crossed, which causes the output to drive a high

voltage. Alternating north and south poles are

required to toggle the output, and integrated

hysteresis separates BOP and BRP to provide robust

switching.

Using an internal oscillator, the DRV5012 device

samples the magnetic field and updates the output at

a rate of 20 Hz or 2.5 kHz, depending on the SEL pin.

This dual-bandwidth feature can allow systems to

monitor changes in movement while using minimal

power.

The device operates from a VCC range of 1.65 V to

5.5 V, and is packaged in a small X2SON.