User`s guide

Elan Digital Systems Ltd. 13 AD125 USER’S GUIDE
20 different input ranges can be achieved with the AD125. The gain
is programmed using the top four bits of SETUP REG 1 (GS0..3).
The following table summarises the gains and input ranges
available:
GAIN GS0..3 AD125 INPUT VOLTAGE RANGE (volts)
BIPOLAR UNIPOLAR
4 0h
± 0.625
0 → 1.25
2 1h
± 1.25
0 → 2.5
4/3 2h
± 1.875
0 → 3.75
1 3h
± 2.5
0 → 5.0
4/5 4h
± 3.125
0 → 6.25
2/3 5h
± 3.75
0 → 7.5
4/7 6h
± 4.375
0 → 8.75
1/2 7h
± 5.0
0 → 10.0
4/9 8h
± 5.625
2/5 9h
± 6.25
4/11 Ah
± 6.875
1/3 Bh
± 7.5
4/13 Ch
± 8.125
2/7 Dh
± 8.75
4/15 Eh
± 9.375
1/4 Fh
± 10.0