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STLUX385ATR Datasheet(PDF) 25 Page - STMicroelectronics |
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STLUX385ATR Datasheet(HTML) 25 Page - STMicroelectronics |
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25 / 99 page  DocID024387 Rev 2 25/98 STLUX385A Product overview of 1 or 4 times. The analog-to-digital converter can operate either in single or in continuous/circular modes. The ADC unit has the following main features: • 8 ADC input channel • 10-bit resolution • Single and continuous conversion mode • Independent channel gain value x1 or x4 to extend dynamic range and resolution to 12- bit equivalent • Interrupt events: – EoC interrupt asserted on end of conversion cycle – EoS interrupt asserted on end of conversion sequences – SEQ_FULL_EN interrupt assert on sequencer buffer full • ADC input voltage range dependent on selected gain value • Selectable conversion data alignment • Individual registers for up to 8 successive conversions 3.9 Analog comparators The STLUX385A includes four independent fast analog comparator units (COMP3-0). Each comparator has an internal reference voltage. COMP3 can be also configured to use an external reference voltage connected to CPM3 input pin. Each comparator reference voltage is generated by a dedicated internal-only 4-bit DAC unit. The main characteristics of the analog comparator unit (ACU) are the following: • Each comparator has an internally configurable reference • Internal reference voltages configurable in 16 steps with 83 mV voltage grain from 0 V (GND) to 1.24 V (voltage reference) • Two stage comparator architecture is used to reach a high gain • Comparator output stage value accessible from processor interface • Continuous fast cycle comparison time |
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