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AD9257-65EBZ 数据表(PDF) 7 Page - Analog Devices |
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AD9257-65EBZ 数据表(HTML) 7 Page - Analog Devices |
7 / 41 page AD9257 Data Sheet Rev. A | Page 6 of 40 SWITCHING SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, 2 V p-p differential input, 1.0 V internal reference, AIN = −1.0 dBFS, unless otherwise noted. Table 4. Parameter1, 2 Temp Min Typ Max Unit CLOCK3 Input Clock Rate Full 10 520 MHz Conversion Rate Full 10 40/65 MSPS Clock Pulse Width High (tEH) Full 12.5/7.69 ns Clock Pulse Width Low (tEL) Full 12.5/7.69 ns OUTPUT PARAMETERS3 Propagation Delay (tPD) Full 1.5 2.3 3.1 ns Rise Time (tR) (20% to 80%) Full 300 ps Fall Time (tF) (20% to 80%) Full 300 ps FCO Propagation Delay (tFCO) Full 1.5 2.3 3.1 ns DCO Propagation Delay (tCPD)4 Full tFCO + (tSAMPLE/28) ns DCO to Data Delay (tDATA)4 Full (tSAMPLE/28) − 300 (tSAMPLE/28) (tSAMPLE/28) + 300 ps DCO to FCO Delay (tFRAME)4 Full (tSAMPLE/28) − 300 (tSAMPLE/28) (tSAMPLE/28) + 300 ps Data to Data Skew (tDATA-MAX − tDATA-MIN) Full ±50 ±200 ps Wake-Up Time (Standby) 25°C 35 μs Wake-Up Time (Power-Down)5 25°C 375 μs Pipeline Latency Full 16 Clock cycles APERTURE Aperture Delay (tA) 25°C 1 ns Aperture Uncertainty (Jitter) 25°C 0.1 ps rms Out-of-Range Recovery Time 25°C 1 Clock cycles 1 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for definitions and for details on how these tests were completed. 2 Measured on standard FR-4 material. 3 Can be adjusted via the SPI. 4 tSAMPLE/28 is based on the number of bits divided by 2 because the delays are based on half duty cycles. tSAMPLE = 1/fS. 5 Wake-up time is defined as the time required to return to normal operation from power-down mode. TIMING SPECIFICATIONS Table 5. Parameter Description Limit Unit SYNC TIMING REQUIREMENTS tSSYNC SYNC to rising edge of CLK+ setup time 0.24 ns typ tHSYNC SYNC to rising edge of CLK+ hold time 0.40 ns typ SPI TIMING REQUIREMENTS See Figure 61 tDS Setup time between the data and the rising edge of SCLK 2 ns min tDH Hold time between the data and the rising edge of SCLK 2 ns min tCLK Period of the SCLK 40 ns min tS Setup time between CSB and SCLK 2 ns min tH Hold time between CSB and SCLK 2 ns min tHIGH SCLK pulse width high 10 ns min tLOW SCLK pulse width low 10 ns min tEN_SDIO Time required for the SDIO pin to switch from an input to an output relative to the SCLK falling edge (not shown in Figure 61) 10 ns min tDIS_SDIO Time required for the SDIO pin to switch from an output to an input relative to the SCLK rising edge (not shown in Figure 61) 10 ns min |
类似零件编号 - AD9257-65EBZ |
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类似说明 - AD9257-65EBZ |
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