34.5.3 Gain Error Figure 34-54. Gain Error vs. Temperature (VDD = 5.0V, fADC = 145 ksps), Differential, REFSEL = External Reference Figure 34-55. Gain Error vs. Temperature (VDD = 5.0V, fADC = 145 ksps), Differential, REFSEL = Internal Reference Figure 34-56. Gain Error vs. VDD (fADC = 145 ksps) at T = 25°C, Differential, REFSEL = External Reference Figure 34-57. Gain Error vs. VDD (fADC = 145 ksps) at T = 25°C, Differential, REFSEL = Internal Reference