SGM839Q

The SGM839Q is a high-accuracy digital current sensor and power monitor with a 16-bit sigma-delta ADC inside. The device is capable of measuring a full-scale differential input of either ±163.84mV or ±40.96mV across a resistive shunt sense element, with -4V to +85V common-mode voltage. 

The SGM839Q features current, bus voltage, temperature and power monitoring along with an alert capability. The built-in temperature sensor has a typical accuracy of ±1℃ at +25℃ for measuring the die temperature and is helpful in monitoring the ambient temperature of the system. 

Targeted at precision measurement applications, the SGM839Q features low offset and low gain drift to maintain accuracy across temperature. Additionally, for wide-range current applications, its low offset voltage and low noise enable measurements from A to kA while ensuring low power loss. Furthermore, the low input bias current facilitates the use of high resistance sensing resistors, ensuring precise micro-amp range measurements. 

The ADC conversion time of the device can be selected from 62µs to 2502µs and sample averaging can be selected from 1x to 1024x, which further contributes to reducing the noise. 

The device is AEC-Q100 qualified (Automotive Electronics Council (AEC) standard Q100 Grade 1) and it is suitable for automotive applications. 

The SGM839Q is available in a Green MSOP-10 package.