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ADC1410S065 Datasheet(PDF) 22 Page - NXP Semiconductors |
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ADC1410S065 Datasheet(HTML) 22 Page - NXP Semiconductors |
22 / 35 page ADC1410S065_080_105_125_2 © NXP B.V. 2009. All rights reserved. Objective data sheet Rev. 02 — 4 June 2009 22 of 35 NXP Semiconductors ADC1410S065/080/105/125 Single 14-bit ADC 65, 80, 105 or 125 Msps 11.5.5 Digital offset By default, the ADC1410S delivers output code that corresponds to the analog input. However it is possible to add a digital offset to the output code via the SPI (bits DIG_OFFSET; see Table 23). 11.5.6 Test patterns For test purposes, the ADC1410S can be configured to transmit one of a number of predefined test patterns (via bits TESTPAT_SEL; see Table 24). A custom test pattern can be defined by the user (TESTPAT_USER; see Table 25 and Table 26) and is selected when TESTPAT_SEL = 101. The selected test pattern will be transmitted regardless of the analog input. 11.5.7 Output codes versus input voltage Table 14. Output codes VINP − VINM Offset binary Two’s complement OTR pin < −1 00 0000 0000 0000 10 0000 0000 0000 1 −1 00 0000 0000 0000 10 0000 0000 0000 0 −0.9998779 00 0000 0000 0001 10 0000 0000 0001 0 −0.9997559 00 0000 0000 0010 10 0000 0000 0010 0 −0.9996338 00 0000 0000 0011 10 0000 0000 0011 0 −0.9995117 00 0000 0000 0100 10 0000 0000 0100 0 .... .... .... 0 −0.0002441 01 1111 1111 1110 11 1111 1111 1110 0 −0.0001221 01 1111 1111 1111 11 1111 1111 1111 0 0 10 0000 0000 0000 00 0000 0000 0000 0 +0.0001221 10 0000 0000 0001 00 0000 0000 0001 0 +0.0002441 10 0000 0000 0010 00 0000 0000 0010 0 .... .... .... 0 +0.9995117 11 1111 1111 1011 01 1111 1111 1011 0 +0.9996338 11 1111 1111 1100 01 1111 1111 1100 0 +0.9997559 11 1111 1111 1101 01 1111 1111 1101 0 +0.9998779 11 1111 1111 1110 01 1111 1111 1110 0 +1 11 1111 1111 1111 01 1111 1111 1111 0 > +1 11 1111 1111 1111 01 1111 1111 1111 1 |
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