PGA309ASPWT Integrated Circuits (ICs)

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The PGA309ASPWT is an integrated single-channel programmable bi-directional current sense amplifier specifically designed for precise bidirectional current measurements in a wide range of application fields. The device supports absolute current measurement using a feedback resistor or incremental current measurement using a shunt resistor. The bidirectional sensing range, gain and output voltage slope can be programmed on-the-fly to suit the application requirements.

PGA309ASPWT Application Field

The PGA309ASPWT offers a highly versatile current sensing solution for a wide range of applications including automotive battery, motor control, renewable energy, motor drive and inverter current control, motor brake systems, AC-DC, and DC-DC power converters, load monitoring, robotics, power management, machine control, lighting controls, and more.

The device also offers excellent integration of multiple features including overvoltage protection, low power consumption, wide programmable gain and output voltage slope, short-circuit protection, and power-on reset.

PGA309ASPWT Working Principle

The PGA309ASPWT works by measuring the voltage drop across a shunt resistor Rsh connecting across its input nodes VinH and VinL. The device then uses the voltage difference across VinH-VinL to calculate the current flowing through Rsh. The device then uses a programmable gain to convert the current into a proportional output voltage Vout.

The device also offers various features to increase the accuracy and reliability of the measured current, such as programmable gain and output voltage slope, overvoltage protection, short-circuit protection, power-on reset, and low power consumption.

The device also provides a wide operating temperature range of -40°C to +105°C and is available in various packages making it suitable for a wide range of applications and environmental conditions.

Conclusion:

The PGA309ASPWT is a versatile and accurate current sensing solution for a variety of applications within the automotive, renewable energy, motor drive, and power management fields. It offers excellent integration of multiple features including programmable gain, output voltage slope, overvoltage protection, and low power consumption. The device is also offered in various packages and with a wide operating temperature range making it suitable for a range of application fields and environmental conditions.

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