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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PC87365 датащи(PDF) 204 Page - National Semiconductor (TI) |
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PC87365 датащи(HTML) 204 Page - National Semiconductor (TI) |
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204 / 215 page  12.0 Device Characteristics (Continued) 204 www.national.com 12.3 INTERNAL RESISTORS 12.3.1 Pull-Up Resistor Symbol: PUnn. 12.3.2 Pull-Down Resistor Symbol: PDnn. 12.4 ANALOG CHARACTERISTICS 12.4.1 VLM Symbol Parameter Conditions Typical Min Max Unit RPU Pull-up equivalent resistance VDD = 3.3V nn nn −30% nn+30% K Ω Symbol Parameter Conditions Typical Min Max Unit RPD Pull-down equivalent resistance VDD = 3.3V nn nn −30% nn+30% K Ω Symbol Parameter Conditions1 1. All parameters specified for 0 ° C ≤ T A ≤ 70° C and AVCC= 3.3V ± 5% unless otherwise specified and external VREF = 1.211V. Min Typical Max Unit VRES Resolution 8 bit VIREF Internal Reference Voltage 1.208 1.211 1.216 V VDNL Differential (non-linearity) Error2 2. The maximum difference between an ideal step size of 1 LSB and any actual step size. ±0.53 3. No missing codes. LSB VREF Reference Voltage Input4 4. The voltage connected to this input serves as the reference voltage used to calculate the actual input voltatge. 1.211 V ACU Accuracy5 5. Total unadjusted error (incoludes the offset, gain, integral n0on-linearity and quantization (0.5 LSB) errors). 0V ≤ V IN ≤ 1.2V ±2 LSB 1.2V ≤ V IN ≤ 2V ±2 LSB 2V ≤ V IN ≤ 0.95 VFS ±4 LSB VFS Full Scale Voltage 2.967 V VIN Input Voltage Range 0 2.45*VREF V tACT VLM Activation Time6 6. Time from when the VLMCFG register Standby Mode Enable bit = 0 until valid conversions are possible. 100 µs |
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