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Digital oscilloscope with a high-speed ADC circuit chip

Author: ZhangKeLin
Tutor: LiPing；LiWei
School: University of Electronic Science and Technology
Course: Electronics and Communication Engineering
Keywords: The Analog Bandwidth clock pulse width / duty cycle Differential analog input resistance Differential analog input voltage range
CLC: TM935.37
Type: Master's thesis
Year: 2009
Downloads: 162
Quote: 1
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Abstract


With the rapid development of the IC process technology , the integrated circuit has now entered the the SoC stage . High - speed , low power consumption of A / D converters are widely used as analog IP, and in particular is applied in the communication and video signal processing . This project is a high-speed low-power , 8-bit single-chip analog-to-digital converter . Its area is small , easy to use , 250MSPS work , has a good linearity and dynamic characteristics of the entire input range . Circuit applications the overall structure of the 1.5 per stage pipeline . The HWD9480 integration chip T / H circuits , the ADC input signal is first driven to the T / H circuits , and then driving the AD internal . In order to facilitate application , HWD9480 also contains an on-chip reference voltage , while the input may receive TTL , CMOS, the LVPECL stage , while the output signal to LVDS . In order to reduce the cost and power consumption , the internal voltage reference and track / hold circuit . Users only need to provide a 3.3V working voltage and differential encoding clock . External reference and the other driver facilities are no longer needed in the case of any use . The HWD9480 contain a stable internal 1.0V reference voltage . The user can choose according to the needs of the performance of the system provided by the internal or external reference voltage . Output mode LVDS, and compatible binary form . Output the median and LVDS output clock parallel output , LVDS data acquisition easier . LVDS output control signal by encoding DCO DCO- get . The encode clock signal by the chip , chip encoded clock signal can be a good solution to the problem of the skew . This project uses an advanced BiCMOS process , 44 -pin , TQFP package . Operating Temperature : -40 ℃ ~ 85 ℃. Finally , the layout using BiCMOS process of 0.35um silicon gate three metal wiring , the entire territory of full-custom design methods are used to complete .

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CLC: > Industrial Technology > Electrotechnical > Electrical measurement techniques and instruments > Frequency, waveform parameter measurement and instrumentation > Oscilloscope > Digital oscilloscope
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