Potentiometer measurement

Operation mode

The supply voltage is configurable via CoE,
0.5...5 V

Measuring range, nominal

-1 … 1 V/V

Measuring range, end value (FSV)

1 V/V

Measuring range, technically usable

-1 …1 V/V

PDO resolution

24 bit (including sign)

PDO LSB (Extended Range)

0.128 ppm

PDO LSB (Legacy Range)

0.119… ppm

Basic accuracy: Measuring deviation at 23°C, with averaging, typ. ²⁾

without Offset

< ± 0.005 %_FSV
< ± 50 ppm_FSV
< ± 50 µV/V

with Offset

< ± 0.015 %_FSV
< ± 150 ppm_FSV
< ± 150 µV/V

Offset/Zero point deviation (at 23°C)

E_Offset

< 140 ppm_FSV

Gain/scale/amplification deviation (at 23°C)

E_Gain

< 40 ppm

Non-linearity over the whole measuring range

E_Lin

< 30 ppm_FSV

Repeatability

E_Rep

< 2 ppm_FSV

Noise (without filtering, at 23°C)

E_{Noise, PtP}

< 105.0 ppm_FSV
< 820 digits

E_{Noise, RMS}

< 18.0 ppm_FSV
< 137 digits

Max. SNR

> 95.1 dB

Noisedensity@1kHz

< 0.18

Noise (with 50 Hz FIR filter, at 23°C)

E_{Noise, PtP}

< 9.0 ppm_FSV
< 70 digits

E_{Noise, RMS}

< 1.5 ppm_FSV
< 12 digits

Max. SNR

> 116.5 dB

Common-mode rejection ratio (without filter) ³⁾

DC:
tbd  typ.

50 Hz:
tbd  typ.

1 kHz:
tbd  typ.

Common-mode rejection ratio (with 50 Hz FIR filter) ³⁾

DC:
tbd  typ.

50 Hz:
tbd  typ.

1 kHz:
tbd  typ.

Temperature coefficient, typ.

Tc_Gain

< 2 ppm/K

Tc_Offset

< 2 ppm_FSV/K

Largest short-term deviation during a specified electrical interference test

tbd %_FSV = tbd ppm_FSV typ.

Input impedance

(internal resistance)

tbd