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AD9218-65PCB 数据表(PDF) 10 Page - Analog Devices |
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AD9218-65PCB 数据表(HTML) 10 Page - Analog Devices |
10 / 28 page HSC-ADC-EVALB-SC/HSC-ADC-EVALB-DC Rev. 0 | Page 10 of 28 The SPI interface designed on the Cypress IC can communicate with up to five different SPI-enabled devices. The CLK and data lines are common to all SPI devices. The correct device is chosen to communicate by using one of the five active low chip select pins. This functionality is controlled by selecting a SPI channel in the software. CLOCKING WITH INTERLEAVED DATA ADCs with very high data rates can exceed the capability of a single buffer memory channel (~133 MSPS). These converters often demultiplex the data into two channels to reduce the rate required to capture the data. In these applications, ADC Analyzer must interleave the data from both channels to process it as a single channel. The user can configure the software to process the first sample from Channel A, the second from Channel B, and so on, or vice versa. The synchronization circuit included in the buffer memory forces a small delay between the write enable signals (WENA and WENB) to the FIFO memory chips (Pin 1, U101, and U201), ensuring that the data is captured in one FIFO before the other. Jumper J401 and Jumper J402 determine which FIFO receives WENA and which FIFO receives WENB. CONNECTING TO THE HSC-ADC-FPGA-4/-8 ADCs that have serial LVDS outputs require another board that is connected between the ADC evaluation board and the FIFO data capture card. This board converts the serial data into parallel CMOS so that the FIFO data capture card can accept the data. For more detailed information on this board, refer to the HSC-ADC-FPGA datasheet at www.analog.com/hsc-FIFO. CONNECTING TO THE DEMUX BRD ADCs that have parallel LVDS outputs require another board that is connected between the ADC evaluation board and the FIFO data capture card. This board converts parallel LVDS to parallel CMOS, using both channels of the FIFO data capture card. For more detailed information on this board, send an email to highspeed.converters@analog.com UPGRADING FIFO MEMORY The FIFO evaluation board includes one or two 32 kB FIFOs that are capable of 133 MHz clock signals, depending on the model number. Pin-compatible FIFO upgrades are available from IDT. See Table 2 for the IDT part number matrix. Table 2. IDT Part Number Matrix Part Number FIFO Depth FIFO Speed IDT72V283-L7-5PF (Default ) 32 kB 133 MHz IDT72V293-L7-5PF 64 kB 133 MHz IDT72V2103-L7-5PF 132 kB 133 MHz IDT72V2113-L7-5PF 256 kB 133 MHz IDT72V283-L6PF 32 kB 166 MHz IDT72V293-L6PF 64 kB 166 MHz IDT72V2103-L6PF 132 kB 166 MHz IDT72V2113-L6PF 256 kB 166 MHz For more information, visit www.idt.com. |
类似零件编号 - AD9218-65PCB |
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类似说明 - AD9218-65PCB |
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