OPA857-DIE

現行

低雜訊、寬頻、可選增益、轉阻放大器

產品詳細資料

Number of channels 1 GBW (typ) (MHz) 6800 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 3.6 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.3 Vos (offset voltage at 25°C) (max) (mV) 10 Rail-to-rail No Features Integrated TIA BW at Acl (MHz) 130 Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 1 GBW (typ) (MHz) 6800 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 3.6 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.3 Vos (offset voltage at 25°C) (max) (mV) 10 Rail-to-rail No Features Integrated TIA BW at Acl (MHz) 130 Operating temperature range (°C) -40 to 85 Rating Catalog
DIESALE (TD) See data sheet
  • Internal Midscale Reference Voltage
  • Pseudo-Differential Output Voltage
  • Wide Dynamic Range
  • Closed-Loop Transimpedance Bandwidth:
    • 125 MHz (5-kΩ Transimpedance Gain, 1.5-pF External Parasitic Capacitance)
    • 105 MHz (20-kΩ Transimpedance Gain, 1.5-pF External Parasitic Capacitance)
  • Ultralow Input-Referred Current Noise (Brickwall Filter BW = 135 MHz):
    • 15 nARMS (20-kΩ Transimpedance)
  • Very Fast Overload Recovery Time: < 25 ns
  • Internal Input Protection Diode
  • Power Supply:
    • Voltage: 2.7 V to 3.6 V
    • Current: 23.4 mA
  • Extended Temperature Range: –40°C to +85°C
  • Internal Midscale Reference Voltage
  • Pseudo-Differential Output Voltage
  • Wide Dynamic Range
  • Closed-Loop Transimpedance Bandwidth:
    • 125 MHz (5-kΩ Transimpedance Gain, 1.5-pF External Parasitic Capacitance)
    • 105 MHz (20-kΩ Transimpedance Gain, 1.5-pF External Parasitic Capacitance)
  • Ultralow Input-Referred Current Noise (Brickwall Filter BW = 135 MHz):
    • 15 nARMS (20-kΩ Transimpedance)
  • Very Fast Overload Recovery Time: < 25 ns
  • Internal Input Protection Diode
  • Power Supply:
    • Voltage: 2.7 V to 3.6 V
    • Current: 23.4 mA
  • Extended Temperature Range: –40°C to +85°C

The OPA857-DIE is a wideband, fast overdrive recovery, fast-settling, ultralow-noise transimpedance amplifier targeted at photodiode monitoring applications. With selectable feedback resistance, the OPA857-DIE simplifies the design of high-performance optical systems. Very fast overload recovery time and internal input protection provide the best combination to protect the remainder of the signal chain from overdrive while minimizing recovery time. The two selectable transimpedance gain configurations allow high dynamic range and flexibility required in modern transimpedance amplifier applications.

The device is characterized for operation over the full industrial temperature range from –40°C to +85°C.

The OPA857-DIE is a wideband, fast overdrive recovery, fast-settling, ultralow-noise transimpedance amplifier targeted at photodiode monitoring applications. With selectable feedback resistance, the OPA857-DIE simplifies the design of high-performance optical systems. Very fast overload recovery time and internal input protection provide the best combination to protect the remainder of the signal chain from overdrive while minimizing recovery time. The two selectable transimpedance gain configurations allow high dynamic range and flexibility required in modern transimpedance amplifier applications.

The device is characterized for operation over the full industrial temperature range from –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 OPA857-DIE Ultralow-Noise, Wideband, Selectable-Feedback Resistance Transimpedance Amplifier datasheet PDF | HTML 2016/8/25
Application brief Time of Flight and LIDAR - Optical Front End Design (Rev. A) PDF | HTML 2022/4/29
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28

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開發板

OPA857EVM — OPA857 評估模組

OPA857EVM 是一款採用 QFN-16 (RGT) 封裝的評估模組,適用於 OPA857 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。此 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,並具備可選擇的跨阻抗增益 (5kΩ/20kΩ)。裝置針腳處的虛擬差動輸出隨後會透過 RF 變壓器轉換為單端訊號。

使用指南: PDF
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開發板

OPA857EVM-978 — OPA857 頻寬擴展評估模組

OPA857 是一款針對光電二極體監測應用所設計的寬頻、超低雜訊跨阻抗放大器 (TIA)。OPA857 具備 5kΩ 與 20kΩ 兩組可選增益配置,同時維持超過 100MHz 的近乎恆定閉合迴路頻寬。在此參考設計中,透過並聯外部電阻與內部電阻,充分發揮高速放大器核心的優勢,從而擴展放大器的跨阻抗頻寬。
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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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