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ADUC7022 Datasheet(PDF) 6 Page - Analog Devices |
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ADUC7022 Datasheet(HTML) 6 Page - Analog Devices |
6 / 92 page ADuC7019/20/21/22/24/25/26/27 Rev. A | Page 6 of 92 SPECIFICATIONS AVDD = IOVDD = 2.7 V to 3.6 V, VREF = 2.5 V internal reference, fCORE = 41.78 MHz, TA = 40°C to 125°C, unless otherwise noted. Table 1. Parameter Min Typ Max Unit Test Conditions/Comments ADC CHANNEL SPECIFICATIONS Eight acquisition clocks and fADC/2 ADC Power-Up Time 5 μs DC Accuracy1, 2 Resolution 12 Bits Integral Nonlinearity ±0.6 ±1.0 ±1.5 LSB LSB 2.5 V internal reference 1.0 V external reference Differential Nonlinearity3, 4 ±0.5 +0.7/−0.6 +1/−0.9 LSB LSB 2.5 V internal reference 1.0 V external reference DC Code Distribution 1 LSB ADC input is a dc voltage ENDPOINT ERRORS5 Offset Error ±1 ±2 LSB Offset Error Match ±1 LSB Gain Error ±2 ±5 LSB Gain Error Match ±1 LSB DYNAMIC PERFORMANCE fIN = 10 kHz sine wave, fSAMPLE = 1 MSPS Signal-to-Noise Ratio (SNR) 69 dB Includes distortion and noise components Total Harmonic Distortion (THD) −78 dB Peak Harmonic or Spurious Noise −75 dB Channel-to-Channel Crosstalk −80 dB Measured on adjacent channels ANALOG INPUT Input Voltage Ranges Differential Mode VCM6 ±VREF/2 V Single-Ended Mode 0 to VREF V Leakage Current ±1 ±6 μA Input Capacitance 20 pF During ADC acquisition ON-CHIP VOLTAGE REFERENCE 0.47 μF from VREF to AGND Output Voltage 2.5 V Accuracy ±5 mV TA = 25°C Reference Temperature Coefficient ±40 ppm/°C Power Supply Rejection Ratio 75 dB Output Impedance 70 Ω TA = 25°C Internal VREF Power-On Time 1 ms EXTERNAL REFERENCE INPUT7 Input Voltage Range 0.625 AVDD V Input Impedance 65 kΩ DAC CHANNEL SPECIFICATIONS RL = 5 k Ω, C L = 100 pF DC ACCURACY8 Resolution 12 Bits Relative Accuracy ±2 LSB Differential Nonlinearity ±1 LSB Guaranteed monotonic Offset Error ±15 mV 2.5 V internal reference Gain Error9 ±1 % Gain Error Mismatch 0.1 % % of full scale on DAC0 |
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