AD820

Rev. H | Page 19 of 24

OFFSET VOLTAGE ADJUSTMENT

The offset voltage of the AD820 is low, so external offset voltage

nulling is not usually required. Figure 46 shows the recommended

technique for the AD820 packaged in plastic DIP. Adjusting offset

voltage in this manner changes the offset voltage temperature drift

by 4 μV/°C for every millivolt of induced offset. The null pins

are not functional for the AD820 in the 8-lead SOIC and MSOP

packages.

AD820

+VS

3

2

–VS

4

7

5

6

1

20kΩ

Figure 46. Offset Null