SPRSP68B January 2023 – November 2023 TMS320F2800152-Q1 , TMS320F2800153-Q1 , TMS320F2800154-Q1 , TMS320F2800155 , TMS320F2800155-Q1 , TMS320F2800156-Q1 , TMS320F2800157 , TMS320F2800157-Q1
PRODMIX
Refer to the PDF data sheet for device specific package drawings
The ADC input characteristics are given by Table 6-19 and Figure 6-43.
DESCRIPTION | REFERENCE MODE | VALUE | |
---|---|---|---|
Cp | Parasitic input capacitance | All | See Table 6-20, Table 6-21, Table 6-22, and Table 6-23 |
Ron | Sampling switch resistance | External Reference, 2.5-V Internal Reference | 500 Ω |
3.3-V Internal Reference | 860 Ω | ||
Ch | Sampling capacitor | External Reference, 2.5-V Internal Reference | 12.5 pF |
3.3-V Internal Reference | 7.5 pF | ||
Rs | Nominal source impedance | All | 50 Ω |
This input model should be used with actual signal source impedance to determine the acquisition window duration. For more information, see the Choosing an Acquisition Window Duration section of the Analog-to-Digital Converter (ADC) chapter in the TMS320F280015x Real-Time Microcontrollers Technical Reference Manual. For recommendations on improving ADC input circuits, see the ADC Input Circuit Evaluation for C2000 MCUs Application Report.
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0/C15/CMP1_DACL | 7.7 | 10.2 |
A1 | 1.6 | 4.1 |
A2/C9 | 1.5 | 4 |
A3/C5 | 1.8 | 4.3 |
A4/C14 | 2.4 | 4.9 |
A5/C2 | 2 | 4.5 |
A6 | 1.4 | 3.9 |
A7/C3 | 1.9 | 4.4 |
A8/C11 | 2.2 | 4.7 |
A9/C8 | 2.3 | 4.8 |
A10/C10 | 2 | 4.5 |
A11/C0 | 2.4 | 4.9 |
A12/C1 | 3.2 | 5.7 |
A14/C4/ADCINCAL | 2.4 | 4.9 |
A15/C7 | 3 | 5.5 |
A16/C16 | 2.4 | 4.9 |
A17/C17 | 2.7 | 5.2 |
A18/C18 | 2.7 | 5.2 |
A19/C19 | 2.7 | 5.2 |
A20/C20 | 2.7 | 5.2 |
C6 | 1.7 | 4.2 |
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0/C15/CMP1_DACL | 7.7 | 10.2 |
A1 | 1.6 | 4.1 |
A2/C9 | 1.5 | 4 |
A3/C5 | 1.8 | 4.3 |
A4/C14 | 2.4 | 4.9 |
A5/C2 | 2 | 4.5 |
A6 | 1.4 | 3.9 |
A7/C3 | 1.9 | 4.4 |
A8/C11 | 2.2 | 4.7 |
A9/C8 | 2.3 | 4.8 |
A10/C10 | 2 | 4.5 |
A11/C0 | 2.4 | 4.9 |
A12/C1 | 3.2 | 5.7 |
A14/C4/ADCINCAL | 2.4 | 4.9 |
A15/C7 | 3 | 5.5 |
A16/C16 | 2.4 | 4.9 |
A17/C17 | 2.7 | 5.2 |
A18/C18 | 2.7 | 5.2 |
A19/C19 | 2.7 | 5.2 |
A20/C20 | 2.7 | 5.2 |
C6 | 1.7 | 4.2 |
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0/C15/CMP1_DACL | 7.7 | 10.2 |
A1 | 1.6 | 4.1 |
A2/C9 | 1.5 | 4 |
A3/C5 | 1.8 | 4.3 |
A4/C14 | 2.4 | 4.9 |
A5/C2 | 2 | 4.5 |
A6/C6 | 3.1 | 8.1 |
A7/C3 | 1.9 | 4.4 |
A8/C11 | 2.2 | 4.7 |
A9/C8 | 2.3 | 4.8 |
A10/C10 | 2 | 4.5 |
A11/C0 | 2.4 | 4.9 |
A12/C1 | 3.2 | 5.7 |
A14/A15/C4/C7/ADCINCAL | 5.4 | 10.4 |
A16/C16 | 2.4 | 4.9 |
A17/C17 | 2.7 | 5.2 |
A19/C19 | 2.7 | 5.2 |
A20/C20 | 2.7 | 5.2 |
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0/A1/C15/CMP1_DACL | 9.3 | 14.3 |
A2/C9 | 1.5 | 4 |
A3/C5 | 1.8 | 4.3 |
A4/C14 | 2.4 | 4.9 |
A5/C2/A11/C0 | 4.4 | 9.4 |
A6/C6 | 3.1 | 8.1 |
A7/C3/A12/C1 | 5.1 | 10.1 |
A8/C11 | 2.2 | 4.7 |
A9/C8/A10/C10 | 4.3 | 9.3 |
A14/A15/C4/C7/ADCINCAL | 5.4 | 10.4 |
A16/C16 | 2.4 | 4.9 |