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ADC12030CIWMX Fiches technique(PDF) 7 Page - Texas Instruments |
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ADC12030CIWMX Fiches technique(HTML) 7 Page - Texas Instruments |
7 / 53 page ADC12030, ADC12032, ADC12034 ADC12038, ADC12H030, ADC12H032 ADC12H034, ADC12H038 www.ti.com SNAS080K – JULY 1999 – REVISED MARCH 2013 Converter Electrical Characteristics (continued) The following specifications apply for V + = V A+ = VD+ = +5.0 VDC, VREF+ = +4.096 VDC, VREF− = 0 VDC, 12-bit + sign conversion mode, fCK = fSK = 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, fCK = fSK = 5 MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, RS = 25Ω, source impedance for VREF+ and VREF− ≤ 25Ω, fully- differential input with fixed 2.048V common-mode voltage, and 10(tCK) acquisition time unless otherwise specified. Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25°C. (1)(2)(3) Units Parameter Test Conditions Typical (4) Limits (5) (Limits) TUE Total Unadjusted Error After Auto Cal (6)(10)(11) ±1 LSB Resolution with No Missing Codes 8-bit + sign mode 8 + sign Bits (min) INL Integral Linearity Error 8-bit + sign mode (6) ±1/2 LSB (max) DNL Differential Non-Linearity 8-bit + sign mode ±3/4 LSB (max) Positive Full-Scale Error 8-bit + sign mode (6) ±1/2 LSB (max) Negative Full-Scale Error 8-bit + sign mode (6) ±1/2 LSB (max) 8-bit + sign mode, after Auto Zero Offset Error ±1/2 LSB (max) VIN(+) = VIN(−) = + 2.048V (10) 8-bit + sign mode after Auto Zero TUE Total Unadjusted Error ±3/4 LSB (max) (6) (10) (11) Multiplexer Chan-to-Chan Matching ±0.05 LSB Power Supply Sensitivity V+ = +5V ±10%, VREF = +4.096V Offset Error ±0.5 ±1 LSB (max) + Full-Scale Error ±0.5 ±1.5 LSB (max) − Full-Scale Error ±0.5 ±1.5 LSB (max) Integral Linearity Error ±0.5 LSB Output Data from “12-Bit +10 LSB (max) (see Table 5) (12) Conversion of Offset” −10 LSB (min) Output Data from “12-Bit 4095 LSB (max) (see Table 5) (12) Conversion of Full-Scale” 4093 LSB (min) UNIPOLAR DYNAMIC CONVERTER CHARACTERISTICS fIN = 1 kHz, VIN = 5 VP-P, VREF + = 5.0V 69.4 dB S/(N+D) Signal-to-Noise Plus Distortion Ratio fIN = 20 kHz, VIN = 5 VP-P, VREF + = 5.0V 68.3 dB fIN = 40 kHz, VIN = 5 VP-P, VREF+ = 5.0V 65.7 dB −3 dB Full Power Bandwidth VIN = 5 VP-P, where S/(N+D) drops 3 dB 31 kHz DIFFERENTIAL DYNAMIC CONVERTER CHARACTERISTICS fIN = 1 kHz, VIN = ±5V, VREF + = 5.0V 77.0 dB S/(N+D) Signal-to-Noise Plus Distortion Ratio fIN = 20 kHz, VIN = ±5V, VREF + = 5.0V 73.9 dB fIN = 40 kHz, VIN = ±5V, VREF + = 5.0V 67.0 dB −3 dB Full Power Bandwidth VIN = ±5V, where S/(N+D) drops 3 dB 40 kHz REFERENCE INPUT, ANALOG INPUTS AND MULTIPLEXER CHARACTERISTICS CREF Reference Input Capacitance 85 pF A/DIN1, A/DIN2 Analog Input CA/D 75 pF Capacitance A/DIN1, A/DIN2 Analog Input VIN = +5.0V or VIN = 0V ±0.1 ±1.0 µA (max) Leakage Current GND − 0.05 V (min) CH0–CH7 and COM Input Voltage (VA+) + 0.05 V (max) CH0–CH7 and COM Input CCH 10 pF Capacitance CMUXOUT MUX Output Capacitance 20 pF (10) Offset error is a measure of the deviation from the mid-scale voltage (a code of zero), expressed in LSB. It is the worst-case value of the code transitions between 1 to 0 and 0 to +1 (see Figure 8). (11) Total unadjusted error includes offset, full-scale, linearity and multiplexer errors. (12) The “12-Bit Conversion of Offset” and “12-Bit Conversion of Full-Scale” modes are intended to test the functionality of the device. Therefore, the output data from these modes are not an indication of the accuracy of a conversion result. Copyright © 1999–2013, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: ADC12030 ADC12032 ADC12034 ADC12038 ADC12H030 ADC12H032 ADC12H034 ADC12H038 |
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