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AS3932 Datasheet(PDF) 9 Page - ams AG |
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AS3932 Datasheet(HTML) 9 Page - ams AG |
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9 / 33 page ![]() www.austriamicrosystems.com/AS3932 Revision 1.2 9 - 33 AS3932 Data Sheet - Electrical Characteristics I3CHSCRC Current Consumption in scanning mode with three active channels and RC- oscillator as RTC 2.7 µA I3CHOORC Current Consumption in ON/ OFF mode with three active channels and RC-oscillator as RTC 11% Duty Cycle 1.7 µA 50% Duty Cycle 3.45 I3CHXT Current Consumption in standard listening mode with three active channels and crystal oscillator as RTC 6.5 8.9 µA IDATA Current Consumption in Preamble detection / Pattern correlation / Data receiving mode (RC-oscillator) With 125 kHz carrier frequency and 1 kbps data-rate. No load on the output pins. 8.3 12 µA Input Sensitivity SENS Input Sensitivity on all channels With 125 kHz carrier frequency, chip in default mode, 4 half bits burst + 4 symbols preamble and single preamble detection 100 µVrms Channel Settling Time TSAMP Amplifier settling time 250 µs Crystal Oscillator FXTAL Frequency Crystal dependent 32.768 kHz TXTAL Start-up Time Crystal dependent 1 s IXTAL Current consumption 1 µA External Clock Source IEXTCL Current consumption 1 µA RC Oscillator FRCNCAL Frequency If no calibration is performed 27 32.768 42 kHz FRCCAL32 Frequency If calibration with 32.768 kHz reference signal is performed 31 32.768 34.5 kHz FRCCALMAX Frequency Maximum achievable frequency after calibration 35 kHz FRCCALMIN Frequency Minimum achievable frequency after calibration 30 kHz TCALRC Calibration time 65 Periods of reference clock IRC Current consumption 200 nA Table 5. Electrical System Specifications Symbol Parameter Conditions Min Typ Max Units |
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