TIDA-00093
最佳化 THS4509 以驅動高速 ADC 參考設計
TIDA-00093
概覽
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.
特點
- High-speed single-ended to differential conversion while maintain excellent performance
- System 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 zone - Examples of both AC and DC coupled interfaces
- Demonstrates anti-aliasing filter design and performance gains
- Amplifier power supply design considerations for best performance are discussed
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| 類型 | 標題 | 下載最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 設計指南 | Optimizing the THS4509 to Drive High-Speed ADCs Design Guide | 2014/3/24 |