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STM32L552CCT3PTR Datasheet(PDF) 254 Page - STMicroelectronics |
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STM32L552CCT3PTR Datasheet(HTML) 254 Page - STMicroelectronics |
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254 / 340 page  Electrical characteristics STM32L552xx 254/340 DS12737 Rev 6 Figure 45. 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. IDDV(DAC) DAC consumption from VREF+ DAC output buffer ON No load, middle code (0x800) - 185 240 µA No load, worst code (0xF1C) - 340 400 DAC output buffer OFF No load, middle code (0x800) - 155 205 Sample and hold mode, buffer ON, CSH = 100 nF, worst case - 185 ₓ Ton/(Ton +Toff) (4) 400 ₓ Ton/(Ton +Toff) (4) Sample and hold mode, buffer OFF, CSH = 100 nF, worst case - 155 ₓ Ton/(Ton +Toff) (4) 205 ₓ Ton/(Ton +Toff) (4) 1. Guaranteed by design. 2. In buffered mode, the output can overshoot above the final value for low input code (starting from min value). 3. Refer to Table 102: I/O static characteristics. 4. Ton is the Refresh phase duration. Toff is the Hold phase duration. Refer to RM0351 reference manual for more details. Table 115. DAC characteristics(1) (continued) Symbol Parameter Conditions Min Typ Max Unit (1) Buffer 12-bit digital to analog converter Buffered/non-buffered DAC DACx_OUT RLOAD CLOAD ai17157d |
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