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BLUENRG-LP датащи(PDF) 50 Page - STMicroelectronics |
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BLUENRG-LP датащи(HTML) 50 Page - STMicroelectronics |
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50 / 72 page ![]() Figure 16. Recommended RSTN pin protection Note: The external reset circuit protects the device against parasitic resets. The user must ensure that the level on the RSTN pin can go below the VIL(RSTN) max. level specified in the table, otherwise the reset is not taken into account by the device. The external capacitor on RSTN must be placed as close as possible to the device. 5.3.18 ADC characteristics Table 37. ADC characteristics (HSI must be set to PLL mode) Symbol Parameter Test conditions Min. Typ. Max. Units Ch_diff_num Number of channels for differential mode QFN48, WLCSP49 4 Ch_se_num Number of channels for single ended mode QFN48, WLCSP49 8 IBATADCBIAS ADC biasing consumption at battery Biasing blocks turned on 145 mA IBATADCACTIVE ADC active consumption at battery ADC activated in differential mode 185 mA VDDA Analog supply voltage 1.2 1.32 V RAIN Input impedance In DC 250 kΩ Rin Internal access resistance VBOOST is enabled for VDD < 2.7 V 550 Ω Cin Input sampling capacitor 4 pF Ts Sampling period 1 µs Tsw Sampling time 125 ns DR Output data rate 200 k samples/s FRMToutput Output data format 16 bits TL Latency time 200 kSps 5 µs TSTARTUP Start-up time From ADC enable to conversion start 1 µs DNL Differential non-linearity ±0.7 LSB BlueNRG-LP Operating conditions DS13282 - Rev 2 page 50/72 |
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