Datasheet

PGA112 , , PGA113
PGA116 , PGA117
www.ti.com ............................................................................................................................................ SBOS424B – MARCH 2008 – REVISED SEPTEMBER 2008
Table 12. Bipolar to Single-Ended Input Scaling
(1) (2)
V
REF_ADC
(V) V
IN1
(V) CH1 INPUT R
A
(k Ω ) R
X
( Ω ) R
B
(k Ω )
2.5 – 5 0.047613 9.2 4.81k 10
0 1.247613
5 2.447613
2.5 – 10 0.050317 3.16 2.4k 10
0 1.250317
10 2.450317
3 – 5 0.058003 13.5 5.76k 10
0 1.498003
5 2.938003
3 – 10 0.059303 4.02 2.87k 10
0 1.499303
10 2.939303
4.096 – 5 0.082224 37 7.87k 10
0 2.048304
5 4.014384
4.096 – 10 0.086018 6.49 3.92k 10
0 2.052098
10 4.018178
5 – 5 0.093506 24 965 10
0 2.493506
5 4.893506
5 – 10 0.095227 9.2 4.81k 10
0 2.495227
10 4.895227
(1) Scaling is based on 0.02(V
REF_ADC
) to 0.98(V
REF_ADC
), using standard 0.1% resistor values.
(2) Assumes symmetrical V
IN
and symmetrical scaling for CH1 input minimum and maximum.
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