The THP210 super-beta input device features extremely-low input bias current, trimmed low input offset voltage,

and the lowest offset drift over the full temperature operating range. These features allow the device to produce

a negligible initial error band at 25°C, but also exceptional robust behavior over temperature. The red curve in

Figure 9-1 showcases a simulation of the total dc error voltage at 25°C versus different gain configurations

based on the application configuration shown in Figure 9-2.

Gain (V/V)

0

1

2

3

4

5

6

7

8

9

10

+

±

V

VS+

+

±

THP210

C

L

DNP

V

VOCM

2.5 V

R

1

1 kŸ

R

3

1 kŸ

V

VS±

V

PD

R

L

10 kŸ

+

±

V

ICM

1.5 V

+

±

+

±

+

±

V

100 mV

V

100 mV

V

IO

I

Bí

I

B+

V

OD

V

INí

V

IN+

V

OUTí

V

OUT+

V

VS+

5 V

+

±

V

VSí

0 V

R

2

R

2

Figure 9-2. FDA DC Error Model

higher dc error.

In addition, Figure 9-3 shows that the absolute dc accuracy of the THP210 nearly adds an error voltage on the

system. The dominant factors for the initial error band are mainly due to the feedback resistor mismatch that is

not considered in the simulation plot.

THP210

SBOS932B – FEBRUARY 2020 – REVISED OCTOBER 2020

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