Datasheet LTC1289 (Analog Devices) - 10
| Fabricante | Analog Devices |
| Descripción | 3 Volt Single Chip 12-Bit Data Acquisition System |
| Páginas / Página | 28 / 10 — APPLICATI. S I FOR ATIO. MUX Address. Table 1. Multiplexer Channel … |
| Formato / tamaño de archivo | PDF / 685 Kb |
| Idioma del documento | Inglés |
APPLICATI. S I FOR ATIO. MUX Address. Table 1. Multiplexer Channel Selection. MUX ADDRESS. DIFFERENTIAL CHANNEL SELECTION
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LTC1289
O U U W U APPLICATI S I FOR ATIO MUX Address
The first four bits of the input word assign the MUX mode (SGL/DIFF = 0) measurements are limited to four configuration for the requested conversion. For a given adjacent input pairs with either polarity. In single-ended channel selection, the converter will measure the voltage mode, all input channels are measured with respect to between the two channels indicated by the + and – signs COM. in the selected row of Table 1. Note that in differential
Table 1. Multiplexer Channel Selection MUX ADDRESS DIFFERENTIAL CHANNEL SELECTION MUX ADDRESS SINGLE-ENDED CHANNEL SELECTION SGL/ ODD SELECT SGL/ ODD SELECT 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 COM DIFF SIGN 1 0 DIFF SIGN 1 0
0 0 0 0 + – 1 0 0 0 + – 0 0 0 1 + – 1 0 0 1 + – 0 0 1 0 + – 1 0 1 0 + – 0 0 1 1 + – 1 0 1 1 + – 0 1 0 0 – + 1 1 0 0 + – 0 1 0 1 – + 1 1 0 1 + – 0 1 1 0 – + 1 1 1 0 + – 0 1 1 1 – + 1 1 1 1 + –
4 Differential 8 Single-Ended Combinations of Differential and Single-Ended
CHANNEL CHANNEL CHANNEL + (–) 0 + + 0,1 { – 0,1 { (+) 1 + – 2 + + (–) 3 – 2,3 + { – 2,3 { (+) + 4 + 5 + + 4 + (–) 4,5 { 6 + – (+) 5 + 7 + 6 + + (–) 7 + 6,7 { – (+) COM (–) COM (–)
Changing the MUX Assignment “On the Fly”
+ – 4,5 5,4 { – { + + 6 + 6,7 { – { 7 + COM (UNUSED) COM (–) 1ST CONVERSION 2ND CONVERSION LTC1289 AIF01
Figure 1. Examples of Multiplexer Options on the LTC1289
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O U U W U APPLICATI S I FOR ATIO MUX Address
The first four bits of the input word assign the MUX mode (SGL/DIFF = 0) measurements are limited to four configuration for the requested conversion. For a given adjacent input pairs with either polarity. In single-ended channel selection, the converter will measure the voltage mode, all input channels are measured with respect to between the two channels indicated by the + and – signs COM. in the selected row of Table 1. Note that in differential
Table 1. Multiplexer Channel Selection MUX ADDRESS DIFFERENTIAL CHANNEL SELECTION MUX ADDRESS SINGLE-ENDED CHANNEL SELECTION SGL/ ODD SELECT SGL/ ODD SELECT 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 COM DIFF SIGN 1 0 DIFF SIGN 1 0
0 0 0 0 + – 1 0 0 0 + – 0 0 0 1 + – 1 0 0 1 + – 0 0 1 0 + – 1 0 1 0 + – 0 0 1 1 + – 1 0 1 1 + – 0 1 0 0 – + 1 1 0 0 + – 0 1 0 1 – + 1 1 0 1 + – 0 1 1 0 – + 1 1 1 0 + – 0 1 1 1 – + 1 1 1 1 + –
4 Differential 8 Single-Ended Combinations of Differential and Single-Ended
CHANNEL CHANNEL CHANNEL + (–) 0 + + 0,1 { – 0,1 { (+) 1 + – 2 + + (–) 3 – 2,3 + { – 2,3 { (+) + 4 + 5 + + 4 + (–) 4,5 { 6 + – (+) 5 + 7 + 6 + + (–) 7 + 6,7 { – (+) COM (–) COM (–)
Changing the MUX Assignment “On the Fly”
+ – 4,5 5,4 { – { + + 6 + 6,7 { – { 7 + COM (UNUSED) COM (–) 1ST CONVERSION 2ND CONVERSION LTC1289 AIF01
Figure 1. Examples of Multiplexer Options on the LTC1289
1289fb 10