LMH34400

現行

具備整合式夾鉗和環境光線消除功能的 240-MHz 單端轉阻放大器

產品詳細資料

Number of channels 1 GBW (typ) (MHz) 240 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 3.45 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Vos (offset voltage at 25°C) (max) (mV) 70 Rail-to-rail No Features Integrated TIA BW at Acl (MHz) 240 Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 1 GBW (typ) (MHz) 240 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 3.45 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Vos (offset voltage at 25°C) (max) (mV) 70 Rail-to-rail No Features Integrated TIA BW at Acl (MHz) 240 Operating temperature range (°C) -40 to 125 Rating Catalog
SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • Integrated gain: 40 kΩ
  • Performance, C PD = 1 pF:
    • Bandwidth: 240 MHz
    • Input-referred noise: 50 nA RMS
    • Rise, fall time: 1.5 ns
  • Integrated ambient light cancellation
  • Integrated 100-mA protection clamp
  • Quiescent current: 20 mA
  • Low-power mode current: 1.5 mA
  • Temperature range: –40°C to +125°C
  • Integrated gain: 40 kΩ
  • Performance, C PD = 1 pF:
    • Bandwidth: 240 MHz
    • Input-referred noise: 50 nA RMS
    • Rise, fall time: 1.5 ns
  • Integrated ambient light cancellation
  • Integrated 100-mA protection clamp
  • Quiescent current: 20 mA
  • Low-power mode current: 1.5 mA
  • Temperature range: –40°C to +125°C

The LMH34400 is the industries’ smallest, fixed-gain, single-ended transimpedance amplifier for light detection and ranging (LIDAR) applications and laser distance measurement systems. The LMH34400 produces 1.0 V PP of output swing and has an input-referred noise of 50 nA RMS.

The LMH34400 has an integrated 100‑mA clamp that protects the amplifier and allows the device to recover rapidly from an overloaded input condition. The LMH34400 also features an integrated ambient light cancellation (ALC) circuit that can be used instead of ac coupling between the photodiode and the amplifier to save board space and system cost. Disable the ALC loop in cases where the frequency signal content to be measured is less than 400 kHz.

When the amplifier is not being used, the LMH34400 can be placed in low-power mode using the EN pin to conserve power. This feature allows several LMH34400 amplifiers to be multiplexed to the input of the next stage of the receive signal chain with the EN control pin serving as the multiplexer select function. The LMH34400 offers a single-ended output and is optimized for use with time-to-digital converter (TDC) based LIDAR systems.

The LMH34400 is the industries’ smallest, fixed-gain, single-ended transimpedance amplifier for light detection and ranging (LIDAR) applications and laser distance measurement systems. The LMH34400 produces 1.0 V PP of output swing and has an input-referred noise of 50 nA RMS.

The LMH34400 has an integrated 100‑mA clamp that protects the amplifier and allows the device to recover rapidly from an overloaded input condition. The LMH34400 also features an integrated ambient light cancellation (ALC) circuit that can be used instead of ac coupling between the photodiode and the amplifier to save board space and system cost. Disable the ALC loop in cases where the frequency signal content to be measured is less than 400 kHz.

When the amplifier is not being used, the LMH34400 can be placed in low-power mode using the EN pin to conserve power. This feature allows several LMH34400 amplifiers to be multiplexed to the input of the next stage of the receive signal chain with the EN control pin serving as the multiplexer select function. The LMH34400 offers a single-ended output and is optimized for use with time-to-digital converter (TDC) based LIDAR systems.

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類型 標題 日期
* Data sheet LMH34400 240-MHz, Single-Ended, Transimpedance Amplifier With Integrated Clamp datasheet (Rev. C) PDF | HTML 2023年 8月 31日
Application brief Improving Mobile Robot Vision Sensors With LiDAR PDF | HTML 2024年 8月 14日
Application brief LiFi: TI High-Speed Products for Optical Wireless Communication PDF | HTML 2023年 8月 7日
Application brief Time of Flight and LIDAR - Optical Front End Design (Rev. A) PDF | HTML 2022年 4月 29日
Certificate LMH34400DRLEVM EU RoHS Declaration of Conformity (DoC) 2022年 3月 3日
EVM User's guide LMH34400 Evaluation Module PDF | HTML 2022年 2月 4日

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開發板

LMH34400DRLEVM — 適用於 275-MHz、單端輸出、轉阻放大器的 LMH34400 評估模組

LMH34400DRLEVM 是用於 LMH34400DRL 單端轉阻放大器的評估模組 (EVM)。EVM 搭載 50-Ω 同軸輸入與輸出接頭,可輕鬆測量標準測試設備,而此選項也可套用 1-VDC 偏壓至板載穩壓器的輸出端。預設配置輸入,以接收透過 2k-Ω 電阻轉換為電流的電壓訊號。EVM 還包括易於使用的跨接器,可用於控制輸出偏壓電壓、輸入偏壓電流抑制和裝置關機功能。

使用指南: PDF | HTML
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模擬型號

LMH34400 PSpice Model

SBOMC58.ZIP (32 KB) - PSpice Model
模擬型號

TINA-TI Reference Circuit

SBOMC57.TSC (14136 KB) - TINA-TI Reference Design
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TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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SOT-5X3 (DRL) 6 Ultra Librarian

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