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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MCP3910 датащи(PDF) 37 Page - Microchip Technology |
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MCP3910 датащи(HTML) 37 Page - Microchip Technology |
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37 / 90 page  2012-2020 Microchip Technology Inc. DS20005116D-page 37 MCP3910 The ADC resolution is a function of the OSR (Section 5.4 “SINC3 + SINC1 Filter”). The resolution is the same for all channels. No matter what the reso- lution is, the ADC output data are always calculated in 24-bit words, with added zeros at the end if the OSR is not large enough to produce 24-bit resolution (left justification). TABLE 5-5: OSR = 256 (AND HIGHER) OUTPUT CODE EXAMPLES ADC Output Code (MSB First) Hexadecimal Decimal, 24-Bit Resolution 0111 1111 1111 1111 111 1 1111 0x7FFFFF + 8,388,607 0111 1111 1111 1111 111 1 1110 0x7FFFFE + 8,388,606 0000 0000 0000 0000 000 0 0000 0x000000 0 1111 1111 1111 1111 111 1 1111 0xFFFFFF - 1 1000 0000 0000 0000 000 0 0001 0x800001 - 8,388,607 1000 0000 0000 0000 000 0 0000 0x800000 - 8,388,608 TABLE 5-6: OSR = 128 OUTPUT CODE EXAMPLES ADC Output Code (MSB First) Hexadecimal Decimal, 23-Bit Resolution 0111 1 111 1111 1 111 1111 111 0 0x7FFFFE + 4,194,303 0111 1 111 1111 1 110 1111 110 0 0x7FFFFC + 4,194,302 0000 0 000 0000 0 000 0000 000 0 0x000000 0 1111 1 111 1111 1 111 1111 111 0 0xFFFFFE - 1 1000 0 000 0000 0 000 0000 001 0 0x800002 - 4,194,303 1000 0 000 0000 0 000 0000 000 0 0x800000 - 4,194,304 TABLE 5-7: OSR = 64 OUTPUT CODE EXAMPLES ADC Output Code (MSB First) Hexadecimal Decimal, 20-Bit Resolution 01 11 1 111 1 111 1 1 1 1 1 1 1 1 0 0 0 0 0x7FFFF0 + 524, 287 01 11 1 111 1 111 1 1 1 1 1 1 1 0 0 0 0 0 0x7FFFE0 + 524, 286 00 00 0 000 0 000 0 0 0 0 0 0 0 0 0 0 0 0 0x000000 0 11 11 1 111 1 111 1 1 1 1 1 1 1 1 0 0 0 0 0xFFFFF0 - 1 10 00 0 000 0 000 0 0 0 0 0 0 0 1 0 0 0 0 0x800010 - 524,287 10 00 0 000 0 000 0 0 0 0 0 0 0 0 0 0 0 0 0x800000 - 524, 288 TABLE 5-8: OSR = 32 OUTPUT CODE EXAMPLES ADC Output Code (MSB First) Hexadecimal Decimal, 17-Bit Resolution 0111 1111 1111 1111 1 0 0 0 0 0 0 0 0x7FFF80 + 65, 535 0111 1111 1111 1111 0 0 0 0 0 0 0 0 0x7FFF00 + 65, 534 0000 0000 0000 0000 0 0 0 0 0 0 0 0 0x000000 0 1111 1111 1111 1111 1 0 0 0 0 0 0 0 0xFFFF80 - 1 1000 0000 0000 0000 1 0 0 0 0 0 0 0 0x800080 - 65,535 1000 0000 0000 0000 0 0 0 0 0 0 0 0 0x800000 - 65, 536 |
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