전자부품 데이터시트 검색엔진 |
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AD7291BCPZ-RL7 데이터시트(PDF) 8 Page - Analog Devices |
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AD7291BCPZ-RL7 데이터시트(HTML) 8 Page - Analog Devices |
8 / 28 page AD7291 Rev. 0 | Page 8 of 28 TYPICAL PERFORMANCE CHARACTERISTICS 1.0 –1.0 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 0 0.5 1.0 1.5 2.0 2.5 3.0 VREF (V) INL (POSITIVE) INL (NEGATIVE) TA = 25°C VDRIVE = 3V VDD = 3V fS = 22.22ksps fSCL = 400kHz 0 –20 –40 –60 –80 –100 –120 02k VDD = VDRIVE = 3V fS = 22.22ksps fSCL = 400kHz fIN = 10kHz SNR = 71.209 THD = –81.66 4k 6k 8k 10k FREQUENCY (Hz) Figure 4. Typical FFT Figure 7. INL vs. External VREF 1.0 0.8 0.6 0.4 0.2 0 –1.0 –0.8 –0.6 –0.4 –0.2 0 500 1000 1500 2000 2500 3000 3500 4096 ADC CODE TA = 25°C VDRIVE = 3V VREF = 2.5V VDD = 3V fS = 22.22ksps fSCL = 400kHz 1.0 –1.0 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 0 0.5 1.0 1.5 2.0 2.5 3.0 VREF (V) DNL (POSITIVE) DNL (NEGATIVE) TA = 25°C VDRIVE = 3V VDD = 3V fS = 22.22ksps fSCL = 400kHz Figure 5. Typical ADC INL Figure 8. DNL vs. External VREF 1.0 0.8 0.6 0.4 0.2 0 –1.0 –0.8 –0.6 –0.4 –0.2 0 500 1000 1500 2000 2500 3000 3500 4096 ADC CODE TA = 25°C VDRIVE = 3V VREF = 2.5V VDD = 3V fS = 22.22ksps fSCL = 400kHz 11.7 11.6 11.5 11.4 11.3 11.2 0 0.5 1.0 1.5 2.0 2.5 EXTERNAL REFERENCE (V) Figure 6. Typical ADC DNL Figure 9. Effective Number of Bits vs. VREF, fSCL = 400 kHz |
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