My customer was reviewing the OPA177GS/2K5 op amp data sheet for output voltage swing information and found some graphical information that doesn’t seem to correlate with the other data from the same publication:
Our load on this output would be ~1 Meg ohm so I used output voltage swing data given for the “RL > 10kΩ”.
Data on page 2 of the shows output voltage swing min +13.5V at 25C with +15V power supply rails. The graph on page 4 titled “MAXIMUM Vout vs Iout (Negative Swing)” shows ~-14.2 Vout with +15V power supply rails and seems to correlate with the data from page 2. Also, The graph on page 6 titled “MAXIMUM OUTPUT VOLTAGE vs LOAD RESISTANCE” seems to correlate with data from page 2 at 10k load.
However, the graph on page 4 titled “MAXIMUM Vout vs Iout (Positive Swing)” shows ~+12.5 Vout with +15V power supply rails and does not seem to correspond with the data from page 2 or page 6. Is this graph incorrect? Can you clarify?
