정교 전류/전압/온도 측정 INA239 센서 -SPI
(VCP MONITOR 4 CLICK)
개요
- 본 제품은 정교 전류/전압 측정 INA239 센서 입니다.
- 16비트 ADC를 가진 높은 정교성의 INA239 센서입니다.
- INA239는 전류, 버스 전압, 온도, 전력을 출력합니다.
- 3.3V/5V와 사용이 가능하며 SPI 인터페이스를 가지고 있습니다.
특징
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VCP Monitor 4 Click as its foundation uses the INA239, a digital current sense amplifier with a 4-wire serial digital interface from Texas Instruments. It measures shunt and bus voltage and internal temperature while calculating the power necessary for accurate decision-making in precisely controlled systems. The input stage of the INA239 is designed such that the input common-mode voltage can be higher than the device supply voltage. It operates from mikroBUS™ power rails but can measure voltage and current as high as 85V, making it well suited for high-side and low-side current measurements.
Its integrated 16-bit ADC allows for selectable conversion times from 50μs to 4.12ms and sample averaging from 1x to 1024x, which further helps reduce the noise of the measured data. It also features low offset and gain-drift and low input bias current, which reduces the current consumed in both Active and Shutdown operational states. Another benefit of low bias current is that it allows the use of larger current-sense resistors (in this case, onboard R4 shunt 25MΩ resistor), thus providing accurate, current measurements in the micro-amp range. Besides, it can also measure the temperature through the integrated temperature sensor in a range from -40ºC up to +125ºC.
Its integrated 16-bit ADC allows for selectable conversion times from 50μs to 4.12ms and sample averaging from 1x to 1024x, which further helps reduce the noise of the measured data. It also features low offset and gain-drift and low input bias current, which reduces the current consumed in both Active and Shutdown operational states. Another benefit of low bias current is that it allows the use of larger current-sense resistors (in this case, onboard R4 shunt 25MΩ resistor), thus providing accurate, current measurements in the micro-amp range. Besides, it can also measure the temperature through the integrated temperature sensor in a range from -40ºC up to +125ºC.
This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the SPI communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
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Type Measurements Applications Can be used for applications such as industrial measurements, DC-DC converters, power inverters, telecom equipment, servers, and many more On-board modules INA239 - ultra-precise digital power monitor with a 16-bit delta-sigma ADC specifically designed for current-sensing applications from Texas Instruments Key Features Low power consumption, high precission, high resolution ADC, accuracy, fast alert response, programmable conversion time and averaging, and more Interface SPI Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V