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STM32F217VG датащи(PDF) 127 Page - STMicroelectronics |
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STM32F217VG датащи(HTML) 127 Page - STMicroelectronics |
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127 / 175 page ![]() DocID17050 Rev 9 127/175 STM32F21xxx Electrical characteristics 174 Figure 53. 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. 6.3.22 Temperature sensor characteristics 6.3.23 VBAT monitoring characteristics R LOAD C LOAD Buffered/Non-buffered DAC DAC_OUTx Buffer(1) 12-bit digital to analog converter ai17157V2 Table 68. TS characteristics Symbol Parameter Min Typ Max Unit TL(1) 1. Based on characterization, not tested in production. VSENSE linearity with temperature - ±1 ±2°C Avg_Slope(1) Average slope - 2.5 mV/°C V25(1) Voltage at 25 °C - 0.76 V tSTART(2) 2. Guaranteed by design, not tested in production. Startup time - 6 10 µs TS_temp(3)(2) 3. Shortest sampling time can be determined in the application by multiple iterations. ADC sampling time when reading the temperature 1°C accuracy 10 - - µs Table 69. VBAT monitoring characteristics Symbol Parameter Min Typ Max Unit R Resistor bridge for VBAT -50 - K Ω Q Ratio on VBAT measurement - 2 - Er(1) 1. Guaranteed by design, not tested in production. Error on Q –1 - +1 % TS_vbat(2)(2) 2. Shortest sampling time can be determined in the application by multiple iterations. ADC sampling time when reading the VBAT 1mV accuracy 5- - µs |
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