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射頻放大器
RF 全差動放大器 (FDA)

LMH5401

現行

8 GHz 超寬頻全差動放大器

立即訂購
產品規格表

LMH5401

現行
產品規格表 立即訂購

產品詳細資料

Type RF FDA Frequency (min) (MHz) 0 Frequency (max) (MHz) 4000 Gain (typ) (dB) 8 Noise figure (typ) (dB) 11 OIP3 (typ) (dBm) 37.5 P1dB (typ) (dBm) 12 Frequency of harmonic distortion measurement (GHz) 1 3rd harmonic (dBc) -70 OIP2 (typ) (dBm) 80 2nd harmonic (dBc) -53 Supply voltage (V) 5 Current consumption (mA) 55 Number of channels 1 Operating temperature range (°C) -40 to 85 Rating Catalog Output enable Yes
Type RF FDA Frequency (min) (MHz) 0 Frequency (max) (MHz) 4000 Gain (typ) (dB) 8 Noise figure (typ) (dB) 11 OIP3 (typ) (dBm) 37.5 P1dB (typ) (dBm) 12 Frequency of harmonic distortion measurement (GHz) 1 3rd harmonic (dBc) -70 OIP2 (typ) (dBm) 80 2nd harmonic (dBc) -53 Supply voltage (V) 5 Current consumption (mA) 55 Number of channels 1 Operating temperature range (°C) -40 to 85 Rating Catalog Output enable Yes
UQFN (RMS) 14 6.25 mm² 2.5 x 2.5
  • 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
  • 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.

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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技術文件

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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

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

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
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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. (...)

從：X-Microwave
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模擬型號

LMH5401 ADS Model

SBOJ019.ZIP (87 KB) - Spice Model
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模擬型號

LMH5401 PSpice Model

SBOMBP6.ZIP (133 KB) - PSpice Model
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模擬型號

LMH5401 TINA Macromodel (Rev. B)

SBOM920B.ZIP (10 KB) - TINA-TI Spice Model
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模擬型號

LMH5401 TINA Reference Design (Rev. B)

SBOM919B.TSC (365 KB) - TINA-TI Reference Design
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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.
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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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計算工具

RF-CASCADE-CALC-TOOL — TI RF Cascade Calculator

A browser-based RF lineup analysis tool supporting up to 10 stages. Computes gain, NF, OIP3, OIP2, OP1dB, and derived metrics. Features dual-axis Plotly charts, P1dB saturation detection, and export to CSV
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計算工具

SBOR022 — TI FDA Calculator

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許多 TI 參考設計包含 LMH5401

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
UQFN (RMS) 14 Ultra Librarian
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