| Application Parameters |
|
| Operating Temp., TA |
°C |
|
Supply Variability
(ripple+load reg.)
|
% |
|
| Error Source |
Specification |
Approx. Calculation |
|
Absolute
Error
|
Drift/Gain
Error
|
Resolution
Error
|
|
| Resistor Tolerance |
% |
|
|
ppm |
Resistor Drift, TCR
Temp. difference, TDIFF
|
ppm / °C
°C
|
~ (1/2 : noninv) TCR × TDIFF |
|
ppm |
| Nom. Open Loop Gain, AOL |
V/mV |
|
ppm |
| Min. Open Loop Gain |
V/mV
|
|
|
ppm |
|
| Input Offset Voltage, VOSI |
mV |
VOSI / (VIN-VREF) |
|
ppm |
| Input Offset Voltage Drift, VOSI_TC |
µV / °C |
(2 : inv.) VOSI_TC × (TA-25) /
(VIN-VREF)
|
|
ppm |
|
Bias Current, IB
- Source Imbalance Error
|
nA |
( IB / (VIN-VREF) ) ×
( RF||(RG+RS-) - (RG2+RS+) )
|
|
ppm |
Bias Current Drift, IB_TC
- Source Imbalance Drift
|
pA / °C |
( IB_TC × (TA-25) / (VIN-VREF) ) ×
( RF||(RG+RS-) - (RG2+RS+) )
|
|
ppm |
Offset Current, IOS
- Source Imbalance Error +
Source Resistance Error
|
nA |
( IOS / (VIN-VREF) ) ×
( 3*(RF||(RG+RS-)) - (RG2+RS+) )/2
|
ppm |
Offset Current Drift, IOS_TC
- Source Imbalance Drift +
Source Resistance Drift
|
pA / °C |
( IOS_TC × (TA-25) / (VIN-VREF) ) ×
( 3*(RF||(RG+RS-)) - (RG2+RS+) )/2
|
|
ppm |
|
| Common Mode Rejection Ratio, CMRR |
dB |
(inv: (1+1/gain)×) 10 -CMRR/20 ×
| (V++V-)/2 - (VS++VS-)/2 | /
| VIN-VREF |
|
|
ppm |
| Power Supply Rejection Ratio, PSRR |
dB |
(inv: (1+1/gain)×) 10 -PSRR/20 ×
( | VS+-VS+nom | +
| VS--VS-nom | ) / | VIN-VREF |
|
ppm |
| |
10 -PSRR/20 × SUP-VAR ×
( VS+-VS- ) / | VIN-VREF |
|
|
ppm |
|
| Noise BW |
0.1 -
Hz
|
|
|
ppm |
| Voltage noise, VNW |
nV/√Hz
|
Corner freq
Hz
|
| Current noise, INW |
pA/√Hz
|
Corner freq
Hz
|
|
| Total resolution error |
|
|
ppm |
| Total drift / gain error |
|
|
ppm |
| Total absolute + drift + resolution error |
|
|
ppm |