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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F072X8 датащи(PDF) 89 Page - STMicroelectronics |
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STM32F072X8 датащи(HTML) 89 Page - STMicroelectronics |
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89 / 128 page  DS9826 Rev 6 89/128 STM32F072x8 STM32F072xB Electrical characteristics 99 Figure 28. 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. Gain error(3) Gain error - - ±0.5 % Given for the DAC in 12-bit configuration tSETTLING(3) Settling time (full scale: for a 10-bit input code transition between the lowest and the highest input codes when DAC_OUT reaches final value ±1LSB -3 4 µs CLOAD ≤ 50 pF, RLOAD ≥ 5 kΩ Update rate(3) Max frequency for a correct DAC_OUT change when small variation in the input code (from code i to i+1LSB) -- 1 MS/s CLOAD ≤ 50 pF, RLOAD ≥ 5 kΩ tWAKEUP(3) Wakeup time from off state (Setting the ENx bit in the DAC Control register) -6.5 10 µs CLOAD ≤ 50 pF, RLOAD ≥ 5 kΩ input code between lowest and highest possible ones. PSRR+ (1) Power supply rejection ratio (to VDDA) (static DC measurement - –67 –40 dB No RLOAD, CLOAD = 50 pF 1. Guaranteed by design, not tested in production. 2. The DAC is in “quiescent mode” when it keeps the value steady on the output so no dynamic consumption is involved. 3. Data based on characterization results, not tested in production. Table 60. DAC characteristics (continued) Symbol Parameter Min Typ Max Unit Comments Buffered/Non-buffered DAC DAC_OUTx Buffer 12-bit digital to analog converter (1) RL CL MS39009V1 |
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