TMCS1101 datasheet(26/48 Pages) TI1

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IOS Drift (mA)

100

120

-50

-40

-30

-20

-10

D022

Sensitivity Drift (%)

100

120

140

160

-1% -.8% -.6% -.4% -.2%

.2%

.4%

.6%

.8%

D020

Sensitivity Drift (%)

100

120

140

160

180

200

-1% -.8% -.6% -.4% -.2%

.2%

.4%

.6%

.8%

D021

TMCS1101

SBOS825A – SEPTEMBER 2019 – REVISED MAY 2020

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Product Folder Links: TMCS1101

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Feature Description (continued)

Figure 36. Sensitivity Error after 135°C, 85% RH HAST

Figure 37. Sensitivity Error Drift after AEC-Q100 High

Temperature Operating Life Stress Test

Figure 38. Input-Referred Offset Drift after AEC-Q100 High Temperature Operating Life Stress Test

9.3.3.3 Frequency Response

The TMCS1101 signal chain has a spectral response atypical of a linear analog system due to its discrete time

sampling. The 250 kHz sampling interval implies an effective Nyquist frequency of 125kHz, which limits spectral

response to below this frequency. Higher frequency content than this frequency will be aliased down to lower

spectrums.

The TMCS1101 bandwidth is defined by the -3dB spectral response of the entire signal chain which is

constrained by the sampling frequency. Normalized gain and phase plots across frequency are shown below in

Figure 39 and Figure 40, all variants have the same bandwidth and phase response. Signal content beyond the

3dB bandwidth level will still have significant fundamental frequency transmission through the signal chain, but at

increasing distortion levels.

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