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射頻放大器
RF 全差動放大器 (FDA)

LMH3401

現行

7 GHz 超寬頻全差動放大器

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產品規格表

LMH3401

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) 16 Noise figure (typ) (dB) 9.4 OIP3 (typ) (dBm) 33 P1dB (typ) (dBm) 13 Frequency of harmonic distortion measurement (GHz) 1 3rd harmonic (dBc) -72 OIP2 (typ) (dBm) 67.5 2nd harmonic (dBc) -64 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) 16 Noise figure (typ) (dB) 9.4 OIP3 (typ) (dBm) 33 P1dB (typ) (dBm) 13 Frequency of harmonic distortion measurement (GHz) 1 3rd harmonic (dBc) -72 OIP2 (typ) (dBm) 67.5 2nd harmonic (dBc) -64 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 mm × 2.5 mm)
  • Excellent Single-Ended to Differential Conversion Performance from DC to 2 GHz
  • 7-GHz, –3-dB Bandwidth
  • Excellent HD2 and HD3 to 2 GHz:
    • –96 (HD2), –102 (HD3) at 10 MHz
    • –79 (HD2), –77 (HD3) at 500 MHz
    • –64 (HD2), –72 (HD3) at 1 GHz
    • –55 (HD2), –40 (HD3) at 2 GHz
  • Best in Class OIP3 Performance to 2 GHz:
    • 45 dBm at 200 MHz
    • 33 dBm at 1 GHz
    • 24 dBm at 2 GHz
  • Fixed Single-Ended to Differential Voltage Gain: 16 dB
  • Noise Figure: 9 dB at 200 MHz (RS = 50 Ω)
  • Slew Rate: 18,000 V/µs
  • Supports Single-Supply or Split-Supply Operation
  • Powered-Down Feature
  • Supply Current: 55 mA
  • Excellent Single-Ended to Differential Conversion Performance from DC to 2 GHz
  • 7-GHz, –3-dB Bandwidth
  • Excellent HD2 and HD3 to 2 GHz:
    • –96 (HD2), –102 (HD3) at 10 MHz
    • –79 (HD2), –77 (HD3) at 500 MHz
    • –64 (HD2), –72 (HD3) at 1 GHz
    • –55 (HD2), –40 (HD3) at 2 GHz
  • Best in Class OIP3 Performance to 2 GHz:
    • 45 dBm at 200 MHz
    • 33 dBm at 1 GHz
    • 24 dBm at 2 GHz
  • Fixed Single-Ended to Differential Voltage Gain: 16 dB
  • Noise Figure: 9 dB at 200 MHz (RS = 50 Ω)
  • Slew Rate: 18,000 V/µs
  • Supports Single-Supply or Split-Supply Operation
  • Powered-Down Feature
  • Supply Current: 55 mA

The LMH3401 is a very high-performance, differential amplifier optimized for radio frequency (RF), intermediate frequency (IF), or high-speed, time-domain applications. This device is ideal for dc- or ac-coupled applications that require a single-ended to differential conversion when driving an analog-to-digital converter (ADC). The LMH3401 generates very low levels of second-order and third-order distortion when operating in single-ended-input to differential-output or differential-input to differential-output mode.

The on-chip resistors simplify printed circuit board (PCB) implementation and provide the highest performance over the usable bandwidth of 2 GHz. This performance makes the LMH3401 ideal for applications such as test and measurement, broadband communications, and high-speed data acquisition. A common-mode reference input pin is provided to align the amplifier output common-mode with the ADC input requirements. Use this device with power supplies between 3.3 V and 5.0 V; dual-supply operation is supported when required by the application.

This level of performance is achieved at a very low power level of 275 mW when a 5.0-V supply is used. A power-down feature is also available for power savings. The LMH3401 is fabricated in Texas Instruments' advanced complementary BiCMOS process and is available in a space-saving, 14-lead UQFN package with a specified operating temperature range of –40°C to 85°C.

The LMH3401 is a very high-performance, differential amplifier optimized for radio frequency (RF), intermediate frequency (IF), or high-speed, time-domain applications. This device is ideal for dc- or ac-coupled applications that require a single-ended to differential conversion when driving an analog-to-digital converter (ADC). The LMH3401 generates very low levels of second-order and third-order distortion when operating in single-ended-input to differential-output or differential-input to differential-output mode.

The on-chip resistors simplify printed circuit board (PCB) implementation and provide the highest performance over the usable bandwidth of 2 GHz. This performance makes the LMH3401 ideal for applications such as test and measurement, broadband communications, and high-speed data acquisition. A common-mode reference input pin is provided to align the amplifier output common-mode with the ADC input requirements. Use this device with power supplies between 3.3 V and 5.0 V; dual-supply operation is supported when required by the application.

This level of performance is achieved at a very low power level of 275 mW when a 5.0-V supply is used. A power-down feature is also available for power savings. The LMH3401 is fabricated in Texas Instruments' advanced complementary BiCMOS process and is available in a space-saving, 14-lead UQFN package with a specified operating temperature range of –40°C to 85°C.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LMH3401 7-GHz, Ultra-Wideband, Fixed-Gain, Fully-Differential Amplifier datasheet (Rev. A) PDF | HTML 2014/12/4
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28
應用說明 ADC32RF45: Amplifier to ADC Interface (Rev. A) 2016/9/7

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

LMH3401EVM — LMH3401 評估模組

LMH3401EVM 是一款評估模組，適用於採用 14 引腳高性能 RF 封裝的單 LMH3401 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 16dB (6.31V/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

TSW54J60EVM — 400MHz 輸入頻寬數位器：雙路 16 位元、1 GSPS ADC 和寬頻固定或可變增益放大器

TSW54J60EVM 評估模組 (EVM) 可用來評估德州儀器的 ADS54J60、LMH3401、LMH6401 及 LMK04828 裝置。ADS54J60 是一款低功耗、16 位元、1-GSPS 類比轉數位轉換器 (ADC)，擁有具備 JESD204B 介面的緩衝類比輸入和輸出。LMH3401 是超寬頻、固定增益 (16dB) 的全差動放大器。LMH6401 是超寬頻數位可變增益放大器，最大增益為 26dB。這兩個放大器都能進行 AC 或 DC 耦合。

EVM 在兩條路徑上都有 400MHz 低通濾波器，可進行訊號調節。LMK04828 為完整的 JESD204B 子類 1 (...)

使用指南: PDF
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模擬型號

LMH3401 ADS Model

SBOJ020.ZIP (69 KB) - Spice 模型
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模擬型號

LMH3401 PSpice Model

SBOMBP5.ZIP (128 KB) - PSpice 模型
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模擬型號

LMH3401 TINA-TI Reference Design (Rev. C)

SBOM909C.TSC (473 KB) - TINA-TI 參考設計
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模擬型號

LMH3401 TINA-TI Spice Model (Rev. C)

SBOM910C.ZIP (8 KB) - TINA-TI Spice 模型
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計算工具

RF-CASCADE-CALC-TOOL — TI RF 級聯計算機

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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參考設計

TIDA-00659 — 二階串級式 8 GHz 放大器參考設計電路板

此電路板串聯兩個 LMH5401 或 LMH3401 放大器，以獲得更大的增益或更大的 DC 共模偏移。

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參考設計

TIDA-00822 — 具有 AC 與 DC 耦合可變增益放大器的 16 位元 1 GSPS 數位器參考設計

此參考設計探討數位可變增益高速放大器 LMH6401 的使用與性能，以驅動高速類比轉數位轉換器 (ADC) ADS54J60 裝置。此設計討論並測量了共模電壓、電源供應器和介面的不同選項，包含 AC 耦合和 DC 耦合，可滿足各種應用的需求。

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參考設計

TIDA-00823 — 具有 AC 與 DC 耦合固定增益放大器的 16 位元 1 GSPS 數位器參考設計

此參考設計探討超寬頻固定增益高速放大器 LMH3401 的使用與性能，可驅動高速類比轉數位轉換器 (ADC) ADS54J60 裝置。此設計討論並測量了共模電壓、電源供應器和介面的不同選項，包含 AC 耦合和 DC 耦合，可滿足各種應用的需求。
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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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