Optimizing THS4509 to Drive High Speed ADCs Reference Design
Description
This reference design shows the ability of the high-speed amplifier: THS4509 to perform single-ended to differential conversion to drive high-speed analog-to-digital converters (ADCs) while maintaining excellent noise and distortion performance. Performance versus input frequency is shown for both AC and DC coupled applications while interfaced to the ADS4449 quad: 250-MSPS: 14-bit ADC. Various options for common-mode voltages: power supplies: and interfaces are discussed and measured to meet the requirements of a variety of applications. Anti-aliasing filter examples are shown along with the performance improvements that they provide.
Features
- High-speed single-ended to differential conversion while maintain excellent performanceSystem performance results for THS4509 driving ADS4449- SFDR > 77 dBFs: SNR > 71 dBFS in first Nyquist zone- SFDR > 69 dBFs: SNR > 67 dBFS in second Nyquist zoneExamples of both AC and DC coupled interfacesDemonstrates anti-aliasing filter design and performance gainsAmplifier power supply design considerations for best performance are discussed
Applications
- Oscilloscopes & digitizers
- Spectrum analyzer
- Active antenna system mMIMO (AAS)
- Vector signal transceiver (VST)
- Macro remote radio unit (RRU)
- Wireless communications test
Product Categories
- Data converters
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Design File
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Download the test file for TIDA-00093| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00093 BOM | 17 Nov 2014 | 276 | ||
| TIDA-00093 Schematic and Block Diagram | 17 Nov 2014 | 138 |