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AD7761BSTZ 数据表(PDF) 21 Page - Analog Devices |
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AD7761BSTZ 数据表(HTML) 21 Page - Analog Devices |
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21 / 76 page ![]() AD7761 Data Sheet Rev. A | Page 20 of 75 TYPICAL PERFORMANCE CHARACTERISTICS AVDD1 = 5 V, AVDD2 = 2.5 V, AVSS = 0 V, IOVDD = 2.5 V, VREF = 4.096 V, TA = 25°C, wideband filter, decimation = ×32, MCLK = 32.768 MHz, analog input precharge buffers on, precharge reference buffers off, unless otherwise noted. –200 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 10 100k 10k 1k 100 FREQUENCY (Hz) SNR = 97.7dB THD = –123.8dB Figure 11. Fast Fourier Transform (FFT), Fast Mode, Wideband Filter, −0.5 dBFS –200 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 10 100k 10k 1k 100 FREQUENCY (Hz) SNR = 97.7dB THD = –125.1dB Figure 12. FFT, Median Mode, Wideband Filter, −0.5 dBFS –200 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 10 1 10k 1k 100 FREQUENCY (Hz) SNR = 97.7dB THD = –128.3dB Figure 13. FFT, Low Power Mode, Wideband Filter, −0.5 dBFS –200 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 10 100k 10k 1k 100 FREQUENCY (Hz) SNR = 97.8dB THD = –124.2dB Figure 14. FFT, Fast Mode, Sinc5 Filter, −0.5 dBFS –200 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 10 100k 10k 1k 100 FREQUENCY (Hz) SNR = 97.9dB THD = –125.1dB Figure 15. FFT, Median Mode, Sinc5 Filter, −0.5 dBFS –200 –180 –160 –140 –120 –100 –80 –60 –40 –20 0 10 1 10k 1k 100 FREQUENCY (Hz) SNR = 97.9dB THD = –128.3dB Figure 16. FFT, Low Power Mode, Sinc5 Filter, −0.5 dBFS |
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