SBOU024C august 2004 – july 2023 PGA309
For a +5V supply and configuration as shown in Figure 3-5 with Test pin high, the gain and offset scaling through the PGA309 on power-up becomes:
VOUT = VDIFF (Front-End PGA Gain)(Output Amplifier Gain)(Fine Gain) + 0.25VREF(Fine Gain)(Output Amplifier Gain)
VOUT = VDIFF (4)(2)(0.5) + (0.25(5)(0.5)) × 2
VOUT = 4 VDIFF + 1.25V