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運算放大器 (op amps)
高速運算放大器 (GBW ≥ 50 MHz)

OPA858

現行

具 FET 輸入的 5.5-GHz 增益頻寬產品去補償轉阻放大器

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產品規格表

OPA858

現行
產品規格表 立即訂購

產品詳細資料

Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3.3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 GBW (typ) (MHz) 5500 BW at Acl (MHz) 1200 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 2000 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 25 Iq per channel (typ) (mA) 20.5 Vos (offset voltage at 25°C) (max) (mV) 2.5 Rail-to-rail No Features Decompensated, Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 80 Input bias current (max) (pA) 5 Offset drift (typ) (µV/°C) 1.5 Iout (typ) (mA) 80 2nd harmonic (dBc) 80 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3.3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 GBW (typ) (MHz) 5500 BW at Acl (MHz) 1200 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 2000 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 25 Iq per channel (typ) (mA) 20.5 Vos (offset voltage at 25°C) (max) (mV) 2.5 Rail-to-rail No Features Decompensated, Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 80 Input bias current (max) (pA) 5 Offset drift (typ) (µV/°C) 1.5 Iout (typ) (mA) 80 2nd harmonic (dBc) 80 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
DIESALE (Y) — See data sheet WSON (DSG) 8 4 mm² (2 mm × 2 mm)
  • High gain bandwidth product: 5.5GHz
  • Decompensated, gain ≥ 7V/V (stable)
  • Ultra-low bias current MOSFET inputs: 10pA
  • Low input voltage noise: 2.5nV/√Hz
  • Slew rate: 2000V/µs
  • Low Input capacitance:
    • Common-mode: 0.6pF
    • Differential: 0.2pF
  • Wide input common-mode range:
    • 1.4V from positive supply
    • Includes negative supply
  • 2.5VPP output swing in TIA configuration
  • Supply voltage range: 3.3V to 5.25V
  • Quiescent current: 20.5mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C
  • High gain bandwidth product: 5.5GHz
  • Decompensated, gain ≥ 7V/V (stable)
  • Ultra-low bias current MOSFET inputs: 10pA
  • Low input voltage noise: 2.5nV/√Hz
  • Slew rate: 2000V/µs
  • Low Input capacitance:
    • Common-mode: 0.6pF
    • Differential: 0.2pF
  • Wide input common-mode range:
    • 1.4V from positive supply
    • Includes negative supply
  • 2.5VPP output swing in TIA configuration
  • Supply voltage range: 3.3V to 5.25V
  • Quiescent current: 20.5mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C

The OPA858 is a wideband, low-noise operational amplifier with CMOS inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 5.5GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains in the range of tens to hundreds of kilohms.

The following graph shows the bandwidth and noise performance of the OPA858 as a function of the photodiode capacitance when the amplifier is configured as a TIA. The total noise is calculated along a bandwidth range extending from dc to the calculated frequency (f) on the left scale. The OPA858 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA858 is optimized to operate in optical time-of-flight (ToF) systems where the OPA858 is used with time-to-digital converters, such as the TDC7201. Use the OPA858 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541 or LMH5401 devices.

The OPA858 is a wideband, low-noise operational amplifier with CMOS inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 5.5GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains in the range of tens to hundreds of kilohms.

The following graph shows the bandwidth and noise performance of the OPA858 as a function of the photodiode capacitance when the amplifier is configured as a TIA. The total noise is calculated along a bandwidth range extending from dc to the calculated frequency (f) on the left scale. The OPA858 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA858 is optimized to operate in optical time-of-flight (ToF) systems where the OPA858 is used with time-to-digital converters, such as the TDC7201. Use the OPA858 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541 or LMH5401 devices.
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技術文件

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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 OPA858 5.5GHz Gain Bandwidth Product, Gain of 7V/V Stable, FET Input Amplifier datasheet (Rev. B) PDF | HTML 2025/5/5
白皮書 汽車光達簡介 (Rev. D) PDF | HTML Download English Version (Rev.D) PDF | HTML 2025/4/24
Circuit design Transimpedance amplifier circuit. (Rev. B) PDF | HTML 2024/9/26
Application brief LiFi: TI High-Speed Products for Optical Wireless Communication PDF | HTML 2023/8/7
Application brief Time of Flight and LIDAR - Optical Front End Design (Rev. A) PDF | HTML 2022/4/29
應用說明 High Speed ADCs and Amplifiers for Flow Cytometry Applications 2020/10/12
技術文章 3 common questions when designing with high-speed amplifiers PDF | HTML 2020/7/17
類比設計期刊 Maximizing the dynamic range of analog fronts ends having a transimpedance amp 2019/6/14
類比設計期刊 Easily improve the performance of analog circuits with decompensated amplifiers (Rev. A) 2019/5/21
技術文章 What you need to know about transimpedance amplifiers – part 2 PDF | HTML 2016/9/1
技術文章 What you need to know about transimpedance amplifiers – part 1 PDF | HTML 2016/5/6
技術文章 SPICE it up: How to extract the input capacitance of an op amp (part 3) PDF | HTML 2016/3/21
應用說明 AN-1604 Decompensated Operational Amplifiers (Rev. B) 2013/5/1
應用說明 AN-1803 Design Considerations for a Transimpedance Amplifier (Rev. A) 2013/5/1
應用說明 Transimpedance Considerations for High-Speed Operational Amplifiers 2009/11/22
應用說明 Compensate Transimpedance Amplifiers Intuitively (Rev. A) 2005/3/30
類比設計期刊 Using a decompensated op amp for improved performance 2005/3/11

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

OPA858DSGEVM — 具有 FET 輸入的 OPA858、5.5 GHz GBP、補償不全轉阻放大器評估模組

OPA858DSGEVM 是採用 DSG（8 接腳 WSON）封裝之單 OPA858 的評估模組。OPA858DSGEVM 可快速展示放大器的功能性和多元用途。EVM 可透過板載連接器連接至電源、訊號源和測試儀器。預設放大器配置為 7 配置和分離電源的非反相增益。可輕鬆為其他增益及單電源操作進行配置。
使用指南: PDF
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模擬型號

OPA858 PSpice Model

SBOMBK7.ZIP (49 KB) - PSpice 模型
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模擬型號

OPA858 TINA-TI Reference Design (Rev. B)

SBOMAM5B.TSC (66 KB) - TINA-TI 參考設計
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模擬型號

OPA858 TINA-TI Spice Model (Rev. B)

SBOMAM4B.ZIP (14 KB) - TINA-TI Spice 模型
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模擬型號

OPA858, THS4541 Flow Cytometry Example Front End PSpice Reference Design

SBOMBL1.ZIP (27 KB) - PSpice 模型
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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參考設計

TIDA-060025 — 可將 LIDAR 與飛行時間 (ToF) 應用的跨阻抗頻寬最大化的參考設計

此設計展示了具有飛時測距 (ToF) 距離量測電路的高速光纖傳輸媒介，該媒介使用光纖傳輸媒介，可適應任何類型的 ToF 量測，例如自由空間。此設計具備領先業界的 2.5-V 輸出線性轉阻前端，具備 10kΩ 增益及超過 200-MHz 頻寬，可進行高精度量測。接收的訊號會使用在短時間模式下運作的 TDC7201 轉換器數位化，進而將裝置的量測精確度從 12ns 提升至 250ps，進一步強化設計的高精確度本質。此量測透過 LaunchPad™ 開發套件上的 MSP430 微控制器進行控制，以利簡易隨插即用相容性。整體而言，相較於需要高速 ADC 和 FPGA (...)
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
DIESALE (Y) — Ultra Librarian
WSON (DSG) 8 Ultra Librarian
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