其次,LVDS接口允许数据以DDR(double-data-rate)方式传输,这意味着同一个LVDS接口在一个时钟周期内可以传输2bit数据,而CMOS接口是做不到的。另外,在高速数据传输时,LVDS的功耗要比CMOS小。 虽然LVDS接口比CMOS接口具有更多的优势,但是这种接口同样也存在着一些限制。当转换器的精度提高后,LVDS数据输出的接口数量增多,...
Double Data Rate (DDR) enable operating at 1.5 GHz; only one DCLK with 90º Phase; Demultiplexed Mode; Dual Edge Sampling (DES) mode with I-channel operating by both ADCs. We are using a Xilinx ZYNC-7000 FPGA, model Z-7010, to manage the ADC data sampl...
Control Mode. See THE SERIAL INTERFACE for description of the serial interface. Power Down Q-channel. A logic high on the 29 PDQ PDQ pin puts only the Q-channel into the Power Down Mode. DCLK Edge Select, Double Data Rate Enable and Serial Data Input. This input sets the output edge ...
KYUNG-MIN KIMPatent Y. Lim, K. Koh, K. Kim, "Double data rate (DDR) counter, analog-to-digital converter (ADC) using the same, CMOS image sensor using the same and methods in DDR counter, ADC and CMOS image sensor," US Patent 7990304, Aug. 2, 2011....
These are expected results. The double-rate mode reduces the SNR as you mentioned. This is due to certain conditions that must be taken when the double-rate mode is configured. So, we recommend to use the PLL (blue path) this time, instead the clock divider (red path). ...
These devices support both double data rate (DDR) low-voltage differential signaling (LVDS) and parallel CMOS digital output interfaces. The low data rate of the DDR LVDS interface (maximum 500Mbps) makes it possible to use low-cost field-programmable gate array (FPGA)-based receivers. They ha...
MCP37220-200和MCP37D20-200双通道高速ADC数据手册说明书 2016 Microchip Technology Inc.DS20005396A_CN 第1 页 MCP37220-200MCP37D20-200 特性 • 采样速率：200 Msps • f IN = 15 MHz 且幅值为-1 dBFS 时的信噪比（Signal-to-Noise Ratio ，SNR ）：-200 Msps 时为67.8 dBFS （典型值）...
Low-Frequency Noise Suppression Mode Programmable Fine Gain, 1-dB steps Until 6-dB Maximum Gain Double Data-Rate (DDR) LVDS and Parallel CMOS Output Options Internal and External Reference Support 3.3-V Analog and Digital Supply Pin-for-Pin With ADS5547 Family ...
1.4 Conversion Mode A conversion mode determines how the ADC processes the input and performs the conversion operation. A standard ADC has basically two types of conversion modes. 1. Single ended conversion mode. 2. Differential conversion mode. ...
Symbol Equivalent Circuit VA 50k 200k 50k 8 pF DDR GND SDATA VA 6 OutEdge / DDR / SDATA Description www.ti.com DCLK Edge Select, Double Data Rate Enable and Serial Data Input. This input sets the output edge of DCLK+ at which the output data transitions. When this pin is floating ...