301020013 datasheet(60/109 Pages) AMSOSRAM

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Dragster

Application information

Datasheet • PUBLIC • Document Feedback

DS000444 • v5-00 • 2025-Aug-29

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Figure 30: External components for the option to control the ADC offset by an external DAC for the case of

a sensor with four segments

Table 32: Optional external components

Component

Description

Nominal

value

Tolerance

Voltage range

DAC1/DAC2

Optional additional DAC on

outputs of Test_Mux

1 V-2.5 V

(or wider)

Output resistance <1 kΩ

VNoise_rms < 0.5 mV

>3.6 V

Optional decoupling capacitor

Low ESR Ceramic

100 nF

±25%

>3.3 V

In order to adjust the ADC black reference an external reference voltage is supplied via the

DAC where lowering the voltages shifts the output signal to higher digital values.

Figure 31 illustrates the equivalent internal circuit when using an external DAC to set the black

level reference. The load circuit, the DAC sees, is in parallel to as many segments that are

connected to the same DAC.

Test_Mux_AB1

Test_Mux_AB2

Test_Mux_EF1

Test_Mux_EF2

Test_Mux_CD1

Test_Mux_CD2

Test_Mux_GH1

Test_Mux_GH2

Dragster Sensor

Headboard

DAC1

DAC2

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