Product Overview
Standard Circuit Example: Reference Voltage Output Mode
Standard Circuit Example: Reference Voltage Input Mode
TMSOP-8 (FM008-A)
This IC, developed by CMOS technology, is a programmable fast-response linear Hall effect sensor IC. It provides an analog output voltage proportional to the magnetic flux density based on the VREF pin voltage.
The IC has a built-in non-volatile memory and a 2-wire serial interface that allow flexible switching functions and trimming adjustments. Switching functions are available for the reference voltage operation mode, reference voltage output, output voltage polarity, frequency bandwidth, and thermal shutdown. High-precision trimming adjustments are available for sensitivity, sensitivity thermal drift, output offset voltage, and reference voltage output.
Because of its fast response, it is ideal for current sensor applications such as monitoring instantaneous overcurrent.
Features
- Output response time
- 2.5 μs max. (frequency bandwidth 400 kHz)
- Analog voltage output proportional to magnetic flux density
- Operates with VREF pin voltage reference, non-linearity ±0.5% max.
High resistance to power supply noise due to non-ratiometric operation - Built-in non-volatile memory
- 2-wire serial interface enables switching of IC functions and trimming adjustment
- Built-in thermal shutdown circuit
- Detection temperature 170°C typ.
- Switching functions
- Reference voltage operation mode: Reference voltage output mode*1, reference voltage input mode
- Reference voltage output: 0.50 V, 1.50 V, 1.65 V, 2.50 V*1
- Output voltage polarity: Normal polarity*1, opposite polarity
- Frequency bandwidth: 100 kHz, 200 kHz, 400 kHz*1
- Thermal shutdown: Available*1, unavailable
- Trimming adjustment
- Sensitivity: 6 V/T to 180 V/T (130 V/T typ.*1), 0.3% step max.
- Sensitivity thermal drift: -500 ppm/°C to +500 ppm/°C (0 ppm/°C typ.*1), 25 ppm/°C step typ.
- Output offset voltage: 1.5 mV step max.
- Reference voltage output: 4.0 mV step max.
- Power supply voltage range
- VDD = 4.5 V to 5.5 V
- Current consumption
- IDD = 19 mA typ.
- Operation temperature range
- Ta = -40°C to +125°C
- Lead-free (Sn 100%), halogen-free
*1. Initial settings at shipment
Application
- Magnetic core current sensor
- Linear position detection
- Rotation detection