SPRSP85A April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
PRODMIX
DESCRIPTION | REFERENCE MODE | VALUE | |
---|---|---|---|
Cp | Parasitic input capacitance | All | See Table 6-16 to Table 6-20 |
Ron | Sampling switch resistance | External Reference, 2.5-V Internal Reference | 1000 Ω |
3.3-V Internal Reference | 1700 Ω | ||
Ch | Sampling capacitor | External Reference, 2.5-V Internal Reference | 4 pF |
3.3-V Internal Reference | 2.5 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 TMS320F28P55x Real-Time Microcontrollers Technical Reference Manual. For recommendations on improving ADC input circuits, see the ADC Input Circuit Evaluation for C2000 MCUs Application Note.
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0, B15, C15, DACA_OUT |
6.1 |
9.6 |
A1, B7, D11, CMP1_DACL |
4.1 |
7.6 |
A2, B6, C9, PGA1_INP |
6.1 |
9.4 |
A4, B8 |
6.0 |
7.9 |
A6, D14, E14 |
4.2 |
7.6 |
A7, C3, D12, B30, E30 |
7.5 |
10.3 |
A8, B0, C11 |
3.4 |
7.8 |
A9 |
3.7 | 8.7 |
A10, B1, C10 |
3.2 | 10.5 |
A11, B10, C0,PGA2_OUT |
9.4 |
13.0 |
A12 |
6.5 |
11.5 |
A14, B14, C4, PGA1_OUT |
5.8 |
8.0 |
A15 |
3.3 |
11.2 |
A16, B16, C16 |
5.0 |
5.6 |
A17,B17,C17 |
6.6 |
6.8 |
A18,B18,C18 |
5.2 |
5.9 |
A19,B19,C19 |
4.6 |
6.0 |
A20,B20,C20 |
6.7 |
6.2 |
B2, C6, E12 |
4.6 |
6.8 |
A3, B3, C5, PGA2_INP |
14.0 |
20.3 |
B4, C8 |
4.3 | 7.9 |
B5, D15, E15 |
6.2 | 8.8 |
A15, B9, C7, PGA1_INM |
3.8 |
11.2 |
B11, D16, E16 |
4.0 |
7.4 |
A5, B12, C2, PGA2_INM |
8.6 | 12.8 |
A12, C1, E11, PGA3_INP |
10.2 |
10.2 |
C5 |
5.4 |
5.4 |
C14 |
4.9 |
6.4 |
D0,E0,A24 |
5.6 | 6.3 |
D1,E1,B24 |
5.5 | 6.4 |
D2,E2,C24 |
4.2 |
4.3 |
D3,E3,A25 |
6.0 |
6.6 |
D4,E4,B25 |
7.2 |
7.8 |
D5,E5,C25 |
2.3 |
2.3 |
D6,E6,A26 |
5.0 |
5.0 |
D7,E7,B26 |
5.0 |
5.0 |
D8, E8, C26 |
3.3 |
3.3 |
D9,E9, A27 |
3.6 |
3.6 |
D10,E10,B27 |
3.0 |
3.8 |
D18,E18,C27 |
3.0 |
3.5 |
D19,E19,A28 |
2.1 |
3.6 |
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0, B15, C15, DACA_OUT |
6.1 | 9.6 |
A1, B7, D11, CMP1_DACL |
4.1 | 7.4 |
A2, B6, C9, PGA1_INP |
6.1 | 9.4 |
A4, B8 |
6.0 | 7.9 |
A5 |
4.2 | 7.6 |
A6, D14, E14 |
7.5 | 10.3 |
A7, C3, D12, B30, E30 |
3.4 | 7.8 |
A8, B0, C11 |
3.7 | 8.7 |
A9 |
3.7 | 8.7 |
A10, B1, C10 |
3.2 | 10.5 |
A11, B10, C0, PGA2_OUT |
9.4 | 13.0 |
A12 |
6.5 | 11.5 |
A14, B14, C4, PGA1_OUT |
5.8 | 8.0 |
A16/B16/C16 |
5.0 | 5.6 |
A17,B17,C17 |
6.6 | 6.8 |
A18,B18,C18 |
5.2 | 5.9 |
A19,B19,C19 |
4.6 | 6.0 |
A20,B20,C20 |
6.7 | 6.2 |
B2, C6, E12 |
4.6 | 6.8 |
B3, PGA2_INP |
14.0 | 20.3 |
B4, C8 |
4.3 | 7.9 |
B5, D15, E15 |
6.2 | 8.8 |
A3, B9, C7, PGA1_INM |
7.0 | 7.6 |
B11, D16, E16 |
4.0 | 7.4 |
B12, C2, PGA2_INM |
8.6 | 12.8 |
C1,E11,PGA3_INP |
10.2 | 10.2 |
C5 |
5.4 | 5.4 |
C14 |
4.9 | 6.4 |
D0,E0,A24 |
5.6 | 6.3 |
D1,E1,B24 |
5.5 | 6.4 |
D2,E2,C24 |
4.2 | 4.3 |
D3,E3,A25 |
6.0 | 6.6 |
D4,E4,B25 |
7.2 | 7.8 |
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0, B15, C15, DACA_OUT |
6.1 | 9.6 |
A1, B7, D11, CMP1_DACL |
4.1 | 7.6 |
A2, B6, C9, PGA1_INP |
6.1 | 9.4 |
A4, B8 |
6.0 | 7.9 |
A6, D14, E14 |
4.2 | 7.6 |
A7, C3, D12, B30,E30 |
7.5 | 10.3 |
A8, B0, C11 |
3.4 | 7.8 |
A9 |
3.7 | 8.7 |
A10, B1, C10 |
3.2 | 10.5 |
A11, B10, C0,PGA2_OUT |
9.4 | 13.0 |
A14, B14, C4, PGA1_OUT |
5.8 | 8.0 |
A16/B16/C16 |
5.0 | 5.6 |
A17,B17,C17 |
6.6 | 6.8 |
A18,B18,C18 |
5.2 | 5.9 |
A19,B19,C19 |
4.6 | 6.0 |
A20,B20,C20 |
6.7 | 6.1 |
B2, C6, E12 |
4.6 | 6.8 |
A3, B3, C9, PGA2_INP |
14.0 | 20.3 |
B4, C8 |
4.3 | 7.9 |
A15, B9, C7, PGA1_INM |
3.8 | 11.2 |
A5, B12, C2, PGA2_INM |
8.6 | 12.8 |
A12, C1,E11,PGA3_INP |
10.2 | 10.2 |
C5 |
5.4 | 5.4 |
C14 |
4.9 | 6.4 |
D0,E0,A24 |
5.6 | 6.3 |
D1,E1,B24 |
5.5 | 6.4 |
D2,E2,C24 |
4.2 | 4.3 |
D3,E3,A25 |
6.0 | 6.6 |
D4,E4,B25 |
7.2 | 7.8 |
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0, B15, C15, DACA_OUT |
6.1 | 9.6 |
A1, B7, D11, CMP1_DACL |
4.1 | 7.6 |
A2, B6, C9, PGA1_INP |
6.1 | 9.4 |
A4, B8 |
6.0 | 7.9 |
A6, D14, E14 |
4.2 | 7.6 |
A7, C3, D12, B30, E30 |
7.5 | 10.3 |
A8, B0, C11 |
3.4 | 7.8 |
A9 |
3.7 | 8.7 |
A10, B1, C10 |
3.2 | 10.5 |
A11, B10, C0,PGA2_OUT |
9.4 | 13.0 |
A14, B14, C4, PGA1_OUT |
5.8 | 8.0 |
A16, B16, C16 |
5.0 | 5.6 |
A17,B17,C17 |
6.6 | 6.8 |
A18,B18,C18 |
5.2 | 5.9 |
A19,B19,C19 |
4.6 | 6.0 |
A20,B20,C20 |
6.7 | 6.1 |
B2, C6, E12 |
4.6 | 6.8 |
A3, B3, PGA2_INP |
14.0 | 20.3 |
B4, C8 |
4.3 | 7.9 |
A15, B9, C7, PGA1_INM |
3.8 | 11.2 |
A5, B12, C2, PGA2_INM |
8.6 | 12.8 |
A12, C1, E11, PGA3_INP |
10.2 | 10.2 |
C5 |
5.4 | 5.4 |
C14 |
4.9 | 6.4 |
D0,E0,A24 |
5.6 | 6.3 |
D1,E1,B24 |
5.5 | 6.4 |
D2,E2,C24 |
4.2 | 4.3 |
D3,E3,A25 |
6.0 | 6.6 |
D4,E4,B25 |
7.2 | 7.8 |
ADC CHANNEL | Cp (pF) | |
---|---|---|
COMPARATOR DISABLED | COMPARATOR ENABLED | |
A0, B15, C15, DACA_OUT |
6.1 | 9.6 |
A1, B7, D11, CMP1_DACL |
4.1 | 7.6 |
A2, B6, C9, PGA1_INP |
6.1 | 9.4 |
A4, B8 |
6.0 | 7.9 |
A7, C3, D12, B30,E30 |
7.5 | 10.3 |
A8, B0, C11 |
3.4 | 7.8 |
A9 |
3.7 | 8.7 |
A10, B1, C10 |
3.2 | 10.5 |
A11, B10, C0,PGA2_OUT |
9.4 | 13.0 |
A14, B14, C4, PGA1_OUT |
5.8 | 8.0 |
A16,B16,C16 |
5.0 | 5.6 |
A17,B17,C17 |
6.6 | 6.8 |
A18,B18,C18 |
5.2 | 5.9 |
A19,B19,C19 |
4.6 | 6.0 |
A20,B20,C20 |
6.7 | 6.1 |
A3, B3, PGA2_INP |
14.0 | 20.3 |
B4, C8 |
4.3 | 7.9 |
A15, B9, C7, PGA1_INM |
3.8 | 11.2 |
A5, B12, C2, PGA2_INM |
8.6 | 12.8 |
A12, C1, E11, PGA3_INP |
10.2 | 10.2 |
C5 |
5.4 | 5.4 |
C14 |
4.9 | 6.4 |
D0,E0,A24 |
5.6 | 6.3 |
D1,E1,B24 |
5.5 | 6.4 |
D2,E2,C24 |
4.2 | 4.3 |
D3,E3,A25 |
6.0 | 6.6 |
D4,E4,B25 |
7.2 | 7.8 |