User manual

PIC18F87J72 Evaluation Board Features

As shown in Figure 3-3, the S2 key is used for changing the internal PGA gain of the

first channel. The gains can be changed from 1 to 32 with each press of the key. When

pressing the S2 key repeatedly, the gain configurations of the Sigma Delta ADC will

sequentially change from 1, 2, 4, 8, 16, 32 and then back to 1.

FIGURE 3-3: Configuring Internal PGA Gain for voltage channel.

Display showing channel gain

Press S2 to

configure

voltage gain