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BLUENRG-332VC 数据表(PDF) 48 Page - STMicroelectronics |
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BLUENRG-332VC 数据表(HTML) 48 Page - STMicroelectronics |
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48 / 67 page ![]() 6.3.18 ADC characteristics Table 38. ADC characteristics (HSI must be set to PLL mode) Symbol Parameter Test conditions Min. Typ. Max . Units Channels Diff Number of channels for differential mode QFN32, WLCSP36 - - 4 - Channels SE Number of channels for single ended mode QFN32, WLCSP36 - - 8 - IBATADCBIA S ADC biasing consumption at battery Biasing blocks turned on - 145 - µA IBATADCACT IVE ADC active consumption at battery ADC activated in differential mode - 185 - µA VDDA_VCAP 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 Default configuration - 1 - µs Tsw Sampling time Default configuration - 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 - bit INL Integral non-linearity - - ±1 - bit SNR Diff Signal to noise ratio Differential input @1 kHz, -1 dBFs, Fs = 800 kHz, DS=4 - 72 - dB STHD Diff Signal to THD ratio (10 harmonics) Differential input @1 kHz, -1 dBFs, Fs = 800 kHz, DS = 4 - 75 - dB ENOB Diff Effective number of bits Differential input @1 kHz, -1 dBFs, Fs = 800 kHz, DS = 4 - 11.5 - bits SNR SE Signal-to-noise ratio Single ended @1 kHz, -1 dBFs, Fs = 800 kHz, DS = 4 - 70 - dB STHD SE Signal-to THD ratio (10 harmonics) Single ended @1 kHz, -1 dBFs, Fs = 800 kHz, DS = 4 - 70 - dB ENOB SE Effective number of bits Single ended @1 kHz, -1 dBFs, Fs = 800 kHz, DS = 4 - 11 - bits - ADC_ERR_1V7 Absolute error when used for battery measurements at 1.7 V, 2.4 V, 3.0 V, 3.6 V - 13 - mV - ADC_ERR_2V4 - 0 - - ADC_ERR_3V0 - -9 - BlueNRG-LPS Operating conditions DS13819 - Rev 4 page 48/67 |
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