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EEVBlog's teardown of $499 Siglent 1104X-E DSO: 4 channels, 1Gsamples/sec, 100MHz, and one Zynq SoC to rule them all

Xilinx Employee
Xilinx Employee
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Over at EEVBlog, Dave jones has just published a teardown of the brand new Siglent SDS-1104X-E 4-channel DSO. This $499 digital scope features four 100MHz channels and a 1Gsample/sec maximum data rate. It has two ADCs inside, so the data rate only falls to 500Msample/sec when all four channels are enabled. Like it’s sibling, the SDS-1202X-E (see “Siglent 200MHz, 1Gsample/sec SDS1000X-E Entry-Level DSO family with 14M sample points is based on Zynq SoC” and “Dave Jones tears down the new, <$400, Zynq-powered, Siglent SDS1202X-E 2-channel, 200MHz, 1Gsamples/sec DSO”), the Siglent SDS-1104X-E is based on a Xilinx Zynq SoC for its foundation architecture. (According to a posting on the EEVBlog forum and data on the siglent.com Web site, there’s also a 200MHz version of the DSO: the SDS-1204X-E.) In fact, the photo of the DSO’s main board shows little more than the four analog front ends (lower left), the two ADCs (immediately above the analog front ends), the Zynq SoC (upper right under the heat sink), and three SDRAM chips that flank the Zynq SoC.

 

 

 

 

Siglent SDS-1104X-E DSO Main Board.jpg 

 

 

 

Although he didn’t remove the heat sink in this teardown video, Dave explains that Siglent told him there’s a Zynq SoC under the heat sink. The SDS-1202X-E used a Zynq Z-7020 SoC. We don’t know from Dave’s video which Zynq SoC Siglent’s engineers used in the SDS-1104X-E design. However, this is an all-new board design for Siglent with two ADCs instead of one. Even so, the previously used Zynq Z-7020 may well be able to handle the extra few differential-pair I/O lines from the second ADC and, because the SDS-1104X-E is a 1Gsamples/sec DSO, the total data rate with all four channels enabled is 2Gsamples/sec, which is the same as the SDS-1202X-E DSO’s maximum data rate.

 

Siglent’s SDS-1202X-E and SDS-1104X-E DSOs once again highlight the Zynq SoC’s flexibility and capability when used as the foundation for a product family. The Zynq SoC’s unique combination of a dual-core Arm Cortex-A9 MPCore processing subsystem and a good-sized chunk of Xilinx 7 series FPGA permits the development of truly high-performance platforms.

 

Here’s Dave’s teardown video for your edification:

 

 

 

 

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