Datasheet

TMC4671 Datasheet • IC Version V1.3 | Document Revision V2.00 • 2020-Apr-17

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For external Delta Sigma R-C-R-CMP modulators, one gets the Delta Sigma input voltage mapping according

to table 16. The support of low-cost external comparators used as ﬁrst order delta sigmal modulators is

intended as an generic analog interface option for compatibility of the TMC4671 core in case it would be

embedded within a pure digital technology environment.

Vmin[V] Vref[V] Vmax[V] VIN[V] DUTY[%] ADC_RAW

0.0 1.65 3.3 0.0 0% 0x0000

0.0 1.65 3.3 0.825 25% 0x4000

0.0 1.65 3.3 1.65 50% 0x7ﬀf

0.0 1.65 3.3 2.475 75% 0xC000

0.0 1.65 3.3 3.3 100% 0xﬀﬀ

Vmin[V] Vref[V] Vmax[V] VIN[V] DUTY[%] ADC_RAW

0.0 2.5 5.0 0.0 0% 0x0000

0.0 2.5 5.0 1.0 25% 0x4000

0.0 2.5 5.0 2.5 50% 0x7ﬀf

0.0 2.5 5.0 3.75 75% 0xC000

0.0 2.5 5.0 5.0 100% 0xﬀﬀ

Table 16: Delta Sigma input voltage mapping of external comparator (CMP)

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