Could you tell me why SSM2018PZ and SSM2018TPZ cost different ? What are different specification at SSM2018PZ and SSM2018TPZ ? Thank you.
The 'T' version of the SSM2018 does not require an external trimmer circuit to optimize the THD. Please see Figure 30 in the datasheet:
If you choose to use the non-T version, you will need to include the offset and symmetry trimmers shown in the upper left detail box.
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