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OP296 数据表(PDF) 3 Page - Analog Devices |
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OP296 数据表(HTML) 3 Page - Analog Devices |
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3 / 88 page  ADuC841/ADuC842/ADuC843 Rev. 0 | Page 3 of 88 SPECIFICATIONS1 Table 1. AVDD = DVDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V; VREF = 2.5 V internal reference, fCORE = 16.78 MHz @ 5 V 8.38 MHz @ 3 V; all specifications TA = TMIN to TMAX, unless otherwise noted Parameter VDD = 5 V VDD = 3 V Unit Test Conditions/Comments ADC CHANNEL SPECIFICATIONS DC ACCURACY2, 3 fSAMPLE = 120 kHz, see the Typical Performance Characteristics for typical performance at other values of fSAMPLE Resolution 12 12 Bits Integral Nonlinearity ±1 ±1 LSB max 2.5 V internal reference ±0.3 ±0.3 LSB typ Differential Nonlinearity +1/–0.9 +1/–0.9 LSB max 2.5 V internal reference ±0.3 ±0.3 LSB typ Integral Nonlinearity4 ±2 ±1.5 LSB max 1 V external reference Differential Nonlinearity4 +1.5/–0.9 +1.5/–0.9 LSB max 1 V external reference Code Distribution 1 1 LSB typ ADC input is a dc voltage CALIBRATED ENDPOINT ERRORS5, 6 Offset Error ±3 ±2 LSB max Offset Error Match ±1 ±1 LSB typ Gain Error ±3 ±2 LSB max Gain Error Match ±1 ±1 LSB typ DYNAMIC PERFORMANCE fIN = 10 kHz sine wave fSAMPLE = 120 kHz Signal-to-Noise Ratio (SNR)7 71 71 dB typ Total Harmonic Distortion (THD) –85 –85 dB typ Peak Harmonic or Spurious Noise –85 –85 dB typ Channel-to-Channel Crosstalk8 –80 –80 dB typ ANALOG INPUT Input Voltage Range 0 to VREF 0 to VREF V Leakage Current ±1 ±1 µA max Input Capacitance 32 32 pF typ TEMPERATURE SENSOR9 Voltage Output at 25°C 700 700 mV typ Voltage TC –1.4 –1.4 mV/°C typ Accuracy ±1.5 ±1.5 °C typ Internal/External 2.5 V VREF DAC CHANNEL SPECIFICATIONS DAC load to AGND Internal Buffer Enabled ADuC841/ADuC842 Only RL = 10 kΩ, CL = 100 pF DC ACCURACY10 Resolution 12 12 Bits Relative Accuracy ±3 ±3 LSB typ Differential Nonlinearity11 –1 –1 LSB max Guaranteed 12-bit monotonic ±1/2 ±1/2 LSB typ Offset Error ±50 ±50 mV max VREF range Gain Error ±1 ±1 % max AVDD range ±1 ±1 % typ VREF range Gain Error Mismatch 0.5 0.5 % typ % of full-scale on DAC1 ANALOG OUTPUTS Voltage Range_0 0 to VREF 0 to VREF V typ DAC VREF = 2.5 V Voltage Range_1 0 to VDD 0 to VDD V typ DAC VREF = VDD Output Impedance 0.5 0.5 Ω typ |
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