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STM32G474PBY3XXX Datasheet(PDF) 156 Page - STMicroelectronics |
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STM32G474PBY3XXX Datasheet(HTML) 156 Page - STMicroelectronics |
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156 / 236 page  Electrical characteristics STM32G474xB STM32G474xC STM32G474xE 156/236 DS12288 Rev 5 Figure 30. 12-bit buffered / non-buffered DAC 1. The DAC integrates an output buffer 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 54: I/O static characteristics. 4. Ton is the Refresh phase duration. Toff is the Hold phase duration. Refer to the reference manual RM0440 "STM32G4 Series advanced Arm®-based 32-bit MCUs" for more details. Table 74. DAC 1MSPS 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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