Product Overview
The VCS1385 is a highly integrated, omnipolar magnetic switch sensor. It combines an AMR magnetic sensor with high-precision CMOS processing circuitry in an ultra-small package. The CMOS processing circuitry offers precisely controlled BOP/BRP offset voltage compensation and a push-pull output, achieving an industrial operating temperature range (-40125) and a wide voltage operating range (1.8V5.5V). With microamp-level current consumption, it is suitable for battery-powered applications such as various handheld devices. As an omnipolar magnetic switch, it simplifies installation requirements by not needing to identify the north or south pole of a magnet. Leveraging the high-speed response of AMR technology, this switch integrates high response frequency, low power consumption, small size, and excellent temperature characteristics, making it a preferred choice for many low-power, high-performance applications. The VCS1385 is available in two package types: SOT23-3 and TO-92S, with corresponding product models VCS1385S and VCS1385T.
Key Features
- Anisotropic Magnetoresistance (AMR) Technology
- Omnipolar Magnetic Switch
- Ultra-low Power Consumption (1.4A)
- High Frequency Response (1kHz)
- High Switching Point and Immunity to Environmental Magnetic Field Interference
- Wide Operating Voltage Range (1.85.5V)
- Excellent Temperature Stability (Operating Temperature: -40125)
Application Scenarios
- Proximity Switches: Typical applications include cylinder switches, industrial control switches, and security devices like smoke alarms.
- Speed Detection: Typical applications include automotive speedometers.
- Position Detection: Linear and rotary positions, typical applications include elevator position sensing and gear sensors.
- Flow Meters: Typical applications include washing machine flow meters and water, electricity, and gas meters.
Technical Specifications
| Parameter | Symbol | Conditions | Min | Typical | Max | Unit |
| Electrical Characteristics | ||||||
| Supply Voltage | VDD | 1.8 | 3.3 | 5.5 | V | |
| Average Current | Iw | -40~125, 3.3V | 0.6 | 1.4 | 2.2 | uA |
| Operating Frequency | Fw | -40~125, 1.8~5.5V | 1000 | Hz | ||
| Output High Voltage | VOH | Load Current=10mA | VDD-0.3 | VDD | V | |
| Output Low Voltage | VOL | Load Current=10mA | 0 | 0.2 | V | |
| Build-up Time | Tpo | 100 | uS | |||
| Sleep Time | Tslp | 1 | mS | |||
| Magnetic Characteristics (-40125, 1.85.5V) | ||||||
| Operating Point | Bop | 10 | 18 | 30 | G | |
| Release Point | Brp | 4 | 14 | 22 | G | |
| Hysteresis | Bbys | 1 | 4 | 12 | G | |
| Limit Parameters | ||||||
| Supply Voltage | VDD | 7 | V | |||
| Reverse Supply Voltage | VRDD | 0.3 | V | |||
| Output Current (Sink) | IOUTSINK | 10 | mA | |||
| ESD Performance (HBM) | VESD | 4 | kV | |||
| Operating Temperature | TA | -40 | 125 | degree | ||
| Storage Temperature | TSTG | -50 | 150 | degree | ||
2506041705_HUAXIN-VCS1385T_C49023400.pdf
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