What is the smallest sensor output that can produce 4V of span (VDD = 5V) without requiring external amplification?
A. The smallest sensor output can be determined when the largest excitation voltage setting of 4.5V (VDD = 5V) and the largest PGA gain (234x) are applied. The applying equation is: sensor output (mV/V) = span (V) / [VBDR (V) * PGA-Gain (V/V)] * 1000 The smallest possible sensor output is 4mV/V. • Q. What is the largest sensor output that can produce 4V of span (VDD = 5V), without requiring an external circuit? A. The largest sensor output can be determined when the smallest excitation voltage setting of 1.5V (VDD = 5V) and smallest PGA gain (39x) are applied. The applying equation is: sensor output (mV/V) = Span (V) / [VBDR (V) * PGA-Gain (V/V)] * 1000 The largest possible sensor output is 68mV/V. • Q. Can I use the uncommitted op amp to provide additional gain for the output voltage? A. Yes. • Q. When operating in digital mode and the output MUX is activated for “infinite” output duration, communication is blocked for nine seconds before it is released to accept digital commands. Thi