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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32H757AI датащи(PDF) 198 Page - STMicroelectronics |
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STM32H757AI датащи(HTML) 198 Page - STMicroelectronics |
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198 / 251 page  Electrical characteristics STM32H757xI 198/251 DS12931 Rev 1 Figure 48. 12-bit buffered /non-buffered DAC 1. The DAC integrates an output buffer that can be used to reduce the output impedance and to drive external loads directly without the use of an external operational amplifier. The buffer can be bypassed by configuring the BOFFx bit in the DAC_CR register. ENOB Effective number of bits DAC output buffer ON, CL ≤ 50 pF, RL ≥ 5 ㏀ , 1 kHz - 10.9 - bits DAC output buffer OFF, CL ≤ 50 pF, no RL, 1 kHz - 10.9 - 1. Guaranteed by characterization. 2. Difference between two consecutive codes minus 1 LSB. 3. Difference between the value measured at Code i and the value measured at Code i on a line drawn between Code 0 and last Code 4095. 4. Difference between the value measured at Code (0x001) and the ideal value. 5. Difference between the ideal slope of the transfer function and the measured slope computed from code 0x000 and 0xFFF when the buffer is OFF, and from code giving 0.2 V and (VREF+ - 0.2 V) when the buffer is ON. 6. Signal is −0.5dBFS with Fsampling=1 MHz. Table 103. DAC accuracy(1) (continued) Symbol Parameter Conditions Min Typ Max Unit R L C L Buffered/Non-buffered DAC DAC_OUTx Buffer(1) 12-bit digital to analog converter ai17157V3 |
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