전자부품 데이터시트 검색엔진 |
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AD7949 데이터시트(PDF) 11 Page - Analog Devices |
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AD7949 데이터시트(HTML) 11 Page - Analog Devices |
11 / 32 page AD7949 Rev. B | Page 11 of 32 –60 –70 –80 –90 –100 –110 –120 0 50 100 150 200 FREQUENCY (kHz) VDD = VREF = 5V, –0.5dB VDD = VREF = 2.5V, –0.5dB VDD = VREF = 2.5V, –10dB VDD = VREF = 5V, –10dB Figure 17. THD vs. Frequency 90 89 88 87 86 85 84 83 82 81 80 79 78 –10 INPUT LEVEL (dB) –8 –6 –2 0 –4 fIN = 20kHz VDD = VREF = 2.5V VDD = VREF = 5V Figure 18. SNR vs. Input Level 2 1 0 –1 –2 –55 TEMPERATURE (°C) –35 –15 5 25 45 65 85 105 125 UNIPOLAR ZERO UNIPOLAR GAIN BIPOLAR ZERO BIPOLAR GAIN Figure 19. Offset and Gain Errors vs. Temperature 2750 2500 2250 2000 1750 1500 1250 1000 750 100 90 80 70 60 50 40 30 20 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VDD SUPPLY (V) 2.5V INTERNAL REF 4.096V INTERNAL REF INTERNAL BUFFER, TEMP ON INTERNAL BUFFER, TEMP OFF EXTERNAL REF, TEMP ON EXTERNAL REF, TEMP OFF VIO fS = 200kSPS Figure 20. Operating Currents vs. Supply 3000 2750 2500 2250 2000 1750 1500 1250 1000 180 160 140 120 100 80 60 40 20 –55 TEMPERATURE (°C) –35 –15 5 25 45 65 85 105 125 fS = 200kSPS VDD = 5V, INTERNAL 4.096V REF VDD = 5V, EXTERNAL REF VDD = 2.5, EXTERNAL REF VIO Figure 21. Operating Currents vs. Temperature SDO CAPACITIVE LOAD (pF) 120 0 20 40 60 80 100 25 20 15 10 5 0 VDD = 2.5V, 85°C VDD = 3.3V, 25°C VDD = 3.3V, 85°C VDD = 5V, 85°C VDD = 5V, 25°C VDD = 2.5V, 25°C Figure 22. tDSDO Delay vs. SDO Capacitance Load and Supply |
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