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STLUX385ATR 数据表(PDF) 89 Page - STMicroelectronics |
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STLUX385ATR 数据表(HTML) 89 Page - STMicroelectronics |
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89 / 99 page ![]() DocID024387 Rev 2 89/98 STLUX385A Electrical characteristics ADC accuracy characteristics at VDD/VDDA 5 V Table 54. ADC accuracy characteristics at VDD/VDDA 5 V Symbol Parameter Conditions(1) 1. Measured with RAIN<10 k Ω (RAIN external series resistance interconnected between the AC signal generator and the ADC input pin). Typ.(2) 2. Temperature operating: T A = 25 °C. Min.(3) 3. Data based on characterization results, not tested in production. Max.(3) Unit |E T | Total unadjusted error (4)(5)(6) 4. ADC accuracy vs. negative injection current. Injecting negative current on any of the analog input pins should be avoided as this reduces the accuracy of the conversion being performed on another analog input. It is recommended a Schottky diode (pin to ground) to be to added to standard analog pins which may potentially inject negative current. Any positive injection current within the limits specified for I INJ(PIN) and Σ IINJ(PIN) in the I/O port pin characteristic section does not affect the ADC accuracy. The ADC accuracy parameters may be also impacted exceeding the ADC maximum input voltage V IN1 or V IN2 . 5. Results in manufacturing test mode. 6. Data aligned with trimming voltage parameters. f ADC = 6 MHz gain 1 TBD LSB |E O | Offset error (4)(5)(6) 0.5 |E G | Gain error (4)(5)(6)(7) 7. Gain error evaluation with two point method. 0.4 E O+G Offset + gain error (7)(8) 8. Temperature operating range: 0 ºC ≤ T A ≤ 85 ºC. -8.3 8.9 E O+G Offset + gain error (7)(9) 9. Temperature operating range: -25 ºC ≤ T A ≤ 105 ºC. -10.9 10.9 E O+G Offset + gain error (7)(10) 10. Temperature operating range: -40 ºC ≤ T A ≤ 105 ºC. -13.8 10.9 |E D | Differential linearity error (2,3,4) 0.8 |E L | Integral linearity error (4)(5)(6) 2.0 |E T | Total unadjusted error ((4)(5)(6) f ADC = 6 MHz gain 4 TBD |E O | Offset error (4)(5)(6) 1.2 |E G | Gain error (4)(5)(6)(7) 0.2 E O+G Offset + gain error (7)(8) -12.2 15.3 E O+G Offset + gain error (5)(9) -16.4 18.5 E O+G Offset + gain error (7)(10) -18.8 18.5 |ED| Differential linearity error (4)(5)(6) 0.8 |E L | Integral linearity error (4)(5)(6) 2.0 |
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