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AD6640 датащи(PDF) 4 Page - Analog Devices |
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AD6640 датащи(HTML) 4 Page - Analog Devices |
4 / 25 page Test AD6640AST Parameter (Conditions) Temp Level Min Typ Max Unit Maximum Conversion Rate Full VI 65 MSPS Minimum Conversion Rate 2 Full IV 6.5 MSPS Aperture Delay (tA) +25 °CV 400 ps Aperture Uncertainty (Jitter) +25 °CV 0.3 ps rms ENCODE Pulsewidth High 3 +25 °CIV 6.5 ns ENCODE Pulsewidth Low +25 °CIV 6.5 ns Output Delay (tOD) DVCC + 3.3 V/5.0 V 4 Full IV 8.5 10.5 12.5 ns NOTES 1All switching specifications tested by driving ENCODE and ENCODE differentially. 2A plot of Performance versus ENCODE is shown in TPC 10. 3A plot of Performance versus Duty Cycle (ENCODE = 65 MSPS) is shown in TPC 11. 4Outputs driving one LCX gate. Delay is measured from differential crossing of ENCODE and ENCODE to the time when all output data bits are within valid logic levels. Specifications subject to change without notice. Test AD6640AST Parameter (Conditions) Temp Level Min Typ Max Unit SNR Analog Input 2.2 MHz +25 °CV 68 dB @ –1 dBFS 15.5 MHz +25 °CI 64 67.7 dB 31.0 MHz +25 °CV 67.5 dB 69.0 MHz +25 °CV 66 dB SINAD Analog Input 2.2 MHz +25 °CV 68 dB @ –1 dBFS 15.5 MHz +25 °CI 63.5 67.2 dB 31.0 MHz +25 °CV 67.0 dB 69.0 MHz +25 °CV 65.5 dB Worst Harmonic 2 (2nd or 3rd) Analog Input 2.2 MHz +25 °CV 80 dBc @ –1 dBFS 15.5 MHz +25 °CI 74 80 dBc 31.0 MHz +25 °CV 79.5 dBc 69.0 MHz +25 °CV 78.5 dBc Worst Harmonic 2 (4th or Higher) Analog Input 2.2 MHz +25 °CV 85 dBc @ –1 dBFS 15.5 MHz +25 °CI 74 85 dBc 31.0 MHz +25 °CV 85 dBc 69.0 MHz +25 °CV 84 dBc Multitone SFDR (with Dither) 3 Eight Tones @ –20 dBFS Full V 90 dBFS Two-Tone IMD Rejection 4 F1, F2 @ –7 dBFS Full V 80 dBc Analog Input Bandwidth 5 +25 °CV 300 MHz NOTES 1All ac specifications tested by driving ENCODE and ENCODE differentially. 2For a single test tone at –1 dBFS, the worst-case spectral performance is typically limited by the direct or aliased second or third harmonic. If a system is designed such that the second and third harmonics fall out-of-band, overall performance in the band of interest is typically improved by 5 dB. Worst harmonic (fourth or higher) includes fourth and higher order harmonics and all other spurious components. Reference TPC 6 for more detail. 3See Overcoming Static Nonlinearities with Dither section for details on improving SFDR performance. To measure SFDR, eight tones from 14 MHz to 18 MHz (0.5 MHz spacing) are swept from –20 dBFS to –90 dBFS. An open channel at 16 MHz is used to monitor SFDR. 4F1 = 14.9 MHz, F2 = 16 MHz. 5Specification is small signal bandwidth. Plots of Performance versus Analog Input Frequency are shown in TPCs 4, 5, and 6. Sampling wide bandwidths (5 MHz–15 MHz) should be limited to 70 MHz center frequency. Specifications subject to change without notice. REV. A –3– (AVCC = 5 V, DVCC = 3.3 V; ENCODE and ENCODE = 65 MSPS; TMIN = –40 C, TMAX = +85 C, unless otherwise noted.) (AVCC = +5 V, DVCC = +3.3 V; ENCODE and ENCODE = 65 MSPS; TMIN = –40 C, TMAX = +85 C, unless otherwise noted.) SWITCHING SPECIFICATIONS1 AC SPECIFICATIONS1 AD6640 |
Аналогичный номер детали - AD6640_17 |
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Аналогичное описание - AD6640_17 |
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