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SBOSAG1 July 2024 TMCS1133-Q1

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DVG|10
- MPSS146B

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9.1.1.2 Full-Temperature Range Error Calculations

To calculate total error across any specific temperature range, use Equation 28 and Equation 29 for RSS maximum total errors, similar to the example for room temperatures. Conditions from the example in Room-Temperature Error Calculations are replaced with the respective equations and error components for a –40°C to 85°C temperature range below in Table 9-2.

Table 9-2 Total Error Calculation: –40°C to 85°C Example

ERROR COMPONENT	SYMBOL	EQUATION	ERROR AT I_IN = 25A	ERROR AT I_IN = 12.5A
Input offset error	e_Ios,ΔT	$e_{I o s, ∆ T} = \frac{V_{O E, 25 ℃} + (V_{O E, d r i f t} \times \|∆ T\|)}{S \times I_{I N}} \times 100 %$	±0.30%	±0.61%
PSRR error	e_PSRR	$e_{P S R R} = \frac{P S R R \times (V_{S} - 3.3)}{I_{I N}} \times 100 %$	±0.04%	±0.08%
CMRR error	e_CMRR	$e_{C M R R} = \frac{C M R R \times V_{C M}}{I_{I N}} \times 100 %$	±0.01%	±0.02%
External Field error	e_Bext	$e_{B e x t} = \frac{B_{E X T} \times C M F R}{I_{I N}} \times 100 %$	±0.02%	±0.03%
Sensitivity error	e_S,ΔT	$e_{S, ∆ T} = e_{S, 25 ℃} + (S_{d r i f t, t h e r m} \times \|∆ T\| \times 100 %)$	±0.70%	±0.70%
Nonlinearity error	e_NL	Specified in Electrical Characteristics	±0.1%	±0.1%
RSS total error	e_RSS,ΔT	$e_{R S S, ∆ T} = \sqrt{{(e_{I o s, ∆ T} + e_{P S R R} + e_{C M R R})}^{2} + {(e_{B e x t})}^{2} + {(e_{S, ∆ T})}^{2} + {(e_{N L})}^{2}}$	0.79%	1.00%