計算工具
ADC12DJ5200RF-HSACCURACY-CALC — Accuracy calculation for ADC12DJ5200RF with amplifier input
DC accuracy calculator which accounts for ADC and amplifier noise and imperfections.
LMH5401
- Gain Bandwidth Product (GBP): 8 GHz
- Excellent Linearity Performance:
DC to 2 GHz, G = 12 dB - Slew Rate: 17,500 V/µs
- Low HD2, HD3 Distortion
(1 VPP, 200 Ω, DE-DE, G = 12 dB):- 100 MHz: HD2 at –104 dBc, HD3 at –96 dBc
- 200 MHz: HD2 at –95 dBc, HD3 at –92 dBc
- 500 MHz: HD2 at –80 dBc, HD3 at –77 dBc
- 1 GHz: HD2 at –64 dBc, HD3 at –58 dBc
- Low IMD2, IMD3 Distortion
(2 VPP, 200 Ω, DE-DE, G = 12 dB):- 200 MHz: IMD2 at –96 dBc, IMD3 at –95 dBc
- 500 MHz: IMD2 at –80 dBc, IMD3 at –83 dBc
- 1 GHz: IMD2 at –70 dBc, IMD3 at –63 dBc
- Input Voltage Noise: 1.25 nV/√Hz
- Input Current Noise: 3.5 pA/√Hz
- Supports Single- and Dual-Supply Operation
- Power Consumption: 55 mA
- Power-Down Feature
The LMH5401 device is a very high-performance, differential amplifier optimized for radio frequency (RF), intermediate frequency (IF), or high-speed, dc-coupled, time-domain applications. The device is ideal for dc- or ac-coupled applications that may require a single-ended-to-differential (SE-DE) conversion when driving an analog-to-digital converter (ADC). The LMH5401 generates very low levels of second- and third-order distortion when operating in SE-DE or differential-to-differential (DE-DE) mode.
The amplifier is optimized for use in both SE-DE and DE-DE systems. The device has unprecedented usable bandwidth from DC to 2 GHz. The LMH5401 can be used for SE-DE conversions in the signal chain without external baluns in a wide range of applications such as test and measurement, broadband communications, and high-speed data acquisition.
A common-mode reference input pin aligns the amplifier output common-mode with the ADC input requirements. Power supplies between 3.3 V and 5 V can be selected and dual-supply operation is supported when required by the application. A power-down feature is also available for power savings.
This level of performance is achieved at a very low power level of 275 mW when a 5-V supply is used. The device is fabricated in Texas Instruments’ advanced complementary BiCMOS process and is available in a space-saving, UQFN-14 package for higher performance.
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| 重要文件 | 類型 | 標題 | 格式選項 | 日期 |
|---|---|---|---|---|
| * | Data sheet | LMH5401 8-GHz, Low-Noise, Low-Power, Fully-Differential Amplifier datasheet (Rev. D) | PDF | HTML | 2018年 2月 23日 |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017年 3月 28日 | ||
| Application note | ADC32RF45: Amplifier to ADC Interface (Rev. A) | 2016年 9月 7日 | ||
| Technical article | How to use a fully differential amplifier as a level shifter | PDF | HTML | 2016年 7月 13日 | |
| Technical article | Disentangling RF amplifier specs: amplifier spot noise vs. noise figure | PDF | HTML | 2016年 2月 5日 | |
| Technical article | How to optimize differential amplifier noise | PDF | HTML | 2015年 7月 7日 |
設計與開發
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開發板
LMH5401EVM — LMH5401 評估模組
LMH5401EVM 是一款評估模組，適用於採用 14 引腳高性能 RF 封裝的單 LMH5401 放大器。此評估模組可快速且輕鬆展示放大器的功能性和多元用途。EVM 隨時可透過板載連接器來連接電源、訊號源和測試儀器。EVM 已配置為可透過其輸入與輸出，輕鬆連接常見的 50-Ω 實驗室設備。放大器配置為單端輸入，增益為 12dB (4V/V)。此電路板具有差動輸出，每個放大器輸出各一個。其可輕鬆地配置為差動輸入，以及單電源供電或雙電源供電操作。
使用指南:
PDF
開發板
XMICR-3P-LMH5401 — LMH5401 X-MWblock 評估模組
X-MWblocks consist of RF and Microwave “drop-in” components that can be used individually for prototyping or in production assemblies. X-MWblocks are easy to test, integrate, align and configure to 60 GHz and beyond. No messy Sweat Soldering or Silver Epoxy processes are required. (...)
計算工具
ADC3669-NOISE-ANALYSIS-CALC — Noise analysis calculation tool (SNR/SFDR) for ADC3669 with amplifier input.
Calculation tool for analyzing noise of ADC3669 with an amplifier as the input network.
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