Hello,
design a high side current monitor (200V), I was looking to use INA149 but a single supply configuration (+5V).
The datasheet presents the following conditions with Vs=+5V, REFA=REFB=2.5V. I understand the limitation on the common mode voltage but I don't understand the differential range limitation.
Can you, please elaborate on this parameter ? does it mean, we cannot measure difference (V+-V-) lower than 1.5V ? Is there an equation or rule of thumb defining this range ?
The Vcm is driven by this equation VCM (±) = 20 VX/VY(±) − 19 VREF while Vx and Vy are the maximum output voltage, in components similar to INA149. Is this correct too?
thanks for your answer and feedback.
Yours Sincerely,