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STM32L432KB 数据表(PDF) 125 Page - STMicroelectronics |
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STM32L432KB 数据表(HTML) 125 Page - STMicroelectronics |
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125 / 149 page  DocID028798 Rev 2 125/149 STM32L432KB STM3L432KC Electrical characteristics 142 Gain Gain error(5) DAC output buffer ON CL ≤ 50 pF, RL ≥ 5 kΩ -- ±0.5 % DAC output buffer OFF CL ≤ 50 pF, no RL -- ±0.5 TUE Total unadjusted error DAC output buffer ON CL ≤ 50 pF, RL ≥ 5 kΩ -- ±30 LSB DAC output buffer OFF CL ≤ 50 pF, no RL -- ±12 TUECal Total unadjusted error after calibration DAC output buffer ON CL ≤ 50 pF, RL ≥ 5 kΩ -- ±23 LSB SNR Signal-to-noise ratio DAC output buffer ON CL ≤ 50 pF, RL ≥ 5 kΩ 1 kHz, BW 500 kHz -71.2 - dB DAC output buffer OFF CL ≤ 50 pF, no RL, 1 kHz BW 500 kHz -71.6 - THD Total harmonic distortion DAC output buffer ON CL ≤ 50 pF, RL ≥ 5 kΩ, 1 kHz --78 - dB DAC output buffer OFF CL ≤ 50 pF, no RL, 1 kHz --79 - SINAD Signal-to-noise and distortion ratio DAC output buffer ON CL ≤ 50 pF, RL ≥ 5 kΩ, 1 kHz -70.4 - dB DAC output buffer OFF CL ≤ 50 pF, no RL, 1 kHz -71- ENOB Effective number of bits DAC output buffer ON CL ≤ 50 pF, RL ≥ 5 kΩ, 1 kHz -11.4- bits DAC output buffer OFF CL ≤ 50 pF, no RL, 1 kHz -11.5- 1. Guaranteed by design. 2. Difference between two consecutive codes - 1 LSB. 3. Difference between measured value at Code i and the value 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 ideal slope of the transfer function and measured slope computed from code 0x000 and 0xFFF when buffer is OFF, and from code giving 0.2 V and (VREF+ – 0.2) V when buffer is ON. Table 68. DAC accuracy(1) (continued) Symbol Parameter Conditions Min Typ Max Unit |
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