Datasheet AD7724 (Analog Devices) - 10
| Fabricante | Analog Devices |
| Descripción | Dual, 7th-Order, Sigma-Delta Modulator |
| Páginas / Página | 17 / 10 — AD7724. 1.0. 0.8. 0.6. 0.4. LSB –. 0.2. –0.2. INL ERROR. –0.4. –0.6. … |
| Revisión | B |
| Formato / tamaño de archivo | PDF / 322 Kb |
| Idioma del documento | Inglés |
AD7724. 1.0. 0.8. 0.6. 0.4. LSB –. 0.2. –0.2. INL ERROR. –0.4. –0.6. –0.8. –1.0 0. 20000. 40000. 65535. CODE. –10. –20. –30. –40. –50. –60. –70. –80. –90. –100. –110. –120. –130
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AD7724 1.0 0.8 0.6 0.4 LSB – 0.2 0 –0.2 INL ERROR –0.4 –0.6 –0.8 –1.0 0 20000 40000 65535 CODE
TPC 10. Integral Nonlinearity Error
0 0 –10 –10 –20 –20 –30 –30 –40 –40 –50 –50 –60 dB –60 dB –70 –70 –80 –80 –90 –90 –100 –100 –110 –110 –120 –120 –130 –130 0 6.5 0 409.0268 FREQUENCY – MHz FREQUENCY – kHz
TPC 11. Modulator Output (0 Hz to MCLK/2) TPC 14. Modulator Output (0 to 409.0268 kHz)
0 0 –20 CLKIN = 13MHz –20 AIN = 90kHz SNR = 90.1dB CLKIN = 13MHz –40 S/(N+D) = 89.2dB –40 SNR = 89.6dB SFDR = –99.5dB S/(N+D) = 89.6dB –60 THD = –96.6dB –60 SFDR = –108.0dB 2ND = –100.9dB dB –80 3RD = –106.0dB dB –80 4TH = –99.5dB –100 –100 –120 –120 –140 –140 –154 –154 0E+0 10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3 90E+3 98E+3 0E+0 10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3 90E+3 98E+3
TPC 12. 16K Point FFT TPC 15. 16K Point FFT
0 0 –20 XTAL = 12.288MHz –20 AIN = 90kHz SNR = 89.0dB XTAL = 12.288MHz –40 S/(N+D) = 87.8dB –40 SNR = 88.1dB SFDR = –94.3dB S/(N+D) = 88.1dB –60 THD = –93.8dB –60 SFDR = –103.7dB 2ND = –94.3dB dB –80 3RD = –108.5dB dB –80 4TH = –105.7dB –100 –100 –120 –120 –140 –140 –154 –154 0E+0 10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3 90E+3 96E+3 0E+0 10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3 90E+3 96E+3
TPC 13. 16K Point FFT TPC 16. 16K Point FFT REV. B –9–
TPC 10. Integral Nonlinearity Error
0 0 –10 –10 –20 –20 –30 –30 –40 –40 –50 –50 –60 dB –60 dB –70 –70 –80 –80 –90 –90 –100 –100 –110 –110 –120 –120 –130 –130 0 6.5 0 409.0268 FREQUENCY – MHz FREQUENCY – kHz
TPC 11. Modulator Output (0 Hz to MCLK/2) TPC 14. Modulator Output (0 to 409.0268 kHz)
0 0 –20 CLKIN = 13MHz –20 AIN = 90kHz SNR = 90.1dB CLKIN = 13MHz –40 S/(N+D) = 89.2dB –40 SNR = 89.6dB SFDR = –99.5dB S/(N+D) = 89.6dB –60 THD = –96.6dB –60 SFDR = –108.0dB 2ND = –100.9dB dB –80 3RD = –106.0dB dB –80 4TH = –99.5dB –100 –100 –120 –120 –140 –140 –154 –154 0E+0 10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3 90E+3 98E+3 0E+0 10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3 90E+3 98E+3
TPC 12. 16K Point FFT TPC 15. 16K Point FFT
0 0 –20 XTAL = 12.288MHz –20 AIN = 90kHz SNR = 89.0dB XTAL = 12.288MHz –40 S/(N+D) = 87.8dB –40 SNR = 88.1dB SFDR = –94.3dB S/(N+D) = 88.1dB –60 THD = –93.8dB –60 SFDR = –103.7dB 2ND = –94.3dB dB –80 3RD = –108.5dB dB –80 4TH = –105.7dB –100 –100 –120 –120 –140 –140 –154 –154 0E+0 10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3 90E+3 96E+3 0E+0 10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3 90E+3 96E+3
TPC 13. 16K Point FFT TPC 16. 16K Point FFT REV. B –9–