50-Ohm 2-GHz Oscilloscope Front-end Reference Design
Description
This reference design is part of an analog front-end for 50Ω-input oscilloscope application. System designers can readily use this evaluation platform to process input signals from DC to 2 GHz in both frequency-domain and time-domain applications.
Features
- 50-Ω input: analog front-end with input signal bandwidth of 2 GHzSystem ENOB of 6 to 8 bits is achieved with this signal chainSupports a maximum input signal of ± 3V: with user-selectable options for input AC or DC couplingDC-offset correction feature available in DC-coupled input modeThree input-amplitude voltage adjustment settings provided by the front-end π-attenuator: 1:1: 2:1 and 5:1Low noise: high-performance fully-differential amplifier (LMH5401) used for single-ended to differential conversionHigh performance digitally-controlled variable-gain amplifier (LMH6401) programmable from 26dB to -6dB gain in 1-dB steps to maintain full-scale input at the ADC12-bit ADC12J4000 operating at 4GSPS for sampling input signalsDesign supports +5 V supply using wall-mount power adapter or +12 V using internal FMC connection
Applications
- Oscilloscopes & digitizers
- Digital multimeter (DMM)
- Lab & field Instrumentation
- Spectrum analyzer
- Vector signal transceiver (VST)
- Wireless communications test
Product Categories
- Amplifiers
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| Download the bill of materials for TIDA-00826 | Download |
Test Data
Get results faster with test and simulation data that's been verified.
Download the test file for TIDA-00826| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00826 PCB | 18 Dec 2015 | 28400 | ||
| TIDA-00826 BOM | 18 Dec 2015 | 283 | ||
| TIDA-00826 Schematic | 18 Dec 2015 | 3700 | ||
| TIDA-00826 Gerber | 30 Nov 2015 | ZIP | 1121 |