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

THS4631

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高速 FET 輸入運算放大器

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產品規格表

THS4631

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) 10 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 32 GBW (typ) (MHz) 210 BW at Acl (MHz) 325 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1000 Vn at flatband (typ) (nV√Hz) 7 Vn at 1 kHz (typ) (nV√Hz) 7 Iq per channel (typ) (mA) 11.5 Vos (offset voltage at 25°C) (max) (mV) 0.5 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 95 Input bias current (max) (pA) 100 Offset drift (typ) (µV/°C) 2.5 Iout (typ) (mA) 95 2nd harmonic (dBc) 76 3rd harmonic (dBc) 94 Frequency of harmonic distortion measurement (MHz) 5
Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 10 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 32 GBW (typ) (MHz) 210 BW at Acl (MHz) 325 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1000 Vn at flatband (typ) (nV√Hz) 7 Vn at 1 kHz (typ) (nV√Hz) 7 Iq per channel (typ) (mA) 11.5 Vos (offset voltage at 25°C) (max) (mV) 0.5 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 95 Input bias current (max) (pA) 100 Offset drift (typ) (µV/°C) 2.5 Iout (typ) (mA) 95 2nd harmonic (dBc) 76 3rd harmonic (dBc) 94 Frequency of harmonic distortion measurement (MHz) 5
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 SOIC (D) 8 29.4 mm² 4.9 x 6
  • High bandwidth:
    • 325MHz in unity gain
    • 210MHz gain bandwidth product
  • High slew rate:
    • 900V/µs (G = 2)
    • 1000V/µs (G = 5)
  • Low distortion of –76dB, SFDR at 5MHz
  • Maximum input bias current: 100pA
  • Input voltage noise: 7nV/√Hz
  • Maximum input offset voltage: 500µV at 25°C
  • Low offset drift: 2.5µV/°C
  • Input impedance: 109 || 3.9pF
  • Wide supply range: ± 5V to ± 15V
  • High output current: 95mA
  • High bandwidth:
    • 325MHz in unity gain
    • 210MHz gain bandwidth product
  • High slew rate:
    • 900V/µs (G = 2)
    • 1000V/µs (G = 5)
  • Low distortion of –76dB, SFDR at 5MHz
  • Maximum input bias current: 100pA
  • Input voltage noise: 7nV/√Hz
  • Maximum input offset voltage: 500µV at 25°C
  • Low offset drift: 2.5µV/°C
  • Input impedance: 109 || 3.9pF
  • Wide supply range: ± 5V to ± 15V
  • High output current: 95mA

The THS4631 is a high-speed, FET-input op amp designed for applications requiring wideband operation, high-input impedance, and high-power supply voltages. By providing a 210MHz gain bandwidth product, ±15V supply operation, and 100pA input bias current, the THS4631 is capable of simultaneous wideband transimpedance gain and large output signal swing. The fast 1000V/µs slew rate allows for fast settling times and good harmonic distortion at high frequencies. Low current and voltage noise allow amplification of extremely low-level input signals while still maintaining a large signal-to-noise ratio.

These high-performance characteristics make the THS4631 an excellent choice for use as a wideband photodiode amplifier. Photodiode output current is a prime candidate for transimpedance amplification. Other potential applications include test and measurement systems requiring high-input impedance, ADC and DAC buffering, high-speed integration, and active filtering.

The THS4631 is offered in a 8-pin SOIC (D) package, and 8-pin HSOIC (DDA) and HVSSOP (DGN) with PowerPAD™ integrated-circuit packages.

The THS4631 is a high-speed, FET-input op amp designed for applications requiring wideband operation, high-input impedance, and high-power supply voltages. By providing a 210MHz gain bandwidth product, ±15V supply operation, and 100pA input bias current, the THS4631 is capable of simultaneous wideband transimpedance gain and large output signal swing. The fast 1000V/µs slew rate allows for fast settling times and good harmonic distortion at high frequencies. Low current and voltage noise allow amplification of extremely low-level input signals while still maintaining a large signal-to-noise ratio.

These high-performance characteristics make the THS4631 an excellent choice for use as a wideband photodiode amplifier. Photodiode output current is a prime candidate for transimpedance amplification. Other potential applications include test and measurement systems requiring high-input impedance, ADC and DAC buffering, high-speed integration, and active filtering.

The THS4631 is offered in a 8-pin SOIC (D) package, and 8-pin HSOIC (DDA) and HVSSOP (DGN) with PowerPAD™ integrated-circuit packages.
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類型 標題 日期
* Data sheet THS4631 High-Voltage, High-Slew-Rate, Wideband FET-Input Operational Amplifier datasheet (Rev. C) PDF | HTML 2025年 3月 14日
Application note Transimpedance Amplifiers (TIA): Choosing the Best Amplifier for the job (Rev. A) 2017年 5月 16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 Transimpedance Considerations for High-Speed Operational Amplifiers 2009年 11月 22日
Application note Noise Analysis for High Speed Op Amps (Rev. A) 2005年 1月 17日

設計與開發

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開發板

THS4631DDAEVM — THS4631DDAEVM 評估模組

THS4631EVM 是專為 DDA 封裝（具備散熱焊盤的 8 針腳 SOIC）設計的評估模組。

THS4631EVM 可展示產品的功能和多元用途。EVM 已準備就緒，可隨時連接可電源，訊號源和測試儀器。

產品規格表中包含 THS4631 評估模組 (EVM) 使用指南。

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開發板

THS4631DGNEVM — THS4631DGNEVM 評估模組

THS4631EVM's is an evaluation Module for the DGN (8-pin MSOP power pad) package.

The THS4631EVM's are designed to demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments.

The THS4631 evaluation module (EVM) User's Guide is included (...)

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模擬型號

THS4631 PSpice Model (Rev. E)

SLOC051E.ZIP (24 KB) - PSpice Model
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模擬型號

THS4631 TINA-TI Reference Design (Rev. B)

SLOC127B.TSC (20 KB) - TINA-TI Reference Design
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模擬型號

THS4631 TINA-TI Spice Model (Rev. A)

SLOM248A.ZIP (4 KB) - TINA-TI Spice Model
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計算工具

ANALOG-ENGINEER-CALC — 類比工程師計算機

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。

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VOLT-DIVIDER-CALC — Voltage divider calculation tool

The voltage divider calculation tool (VOLT-DIVIDER-CALC) quickly determines a set of resistors for a voltage divider. This KnowledgeBase JavaScript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. VOLT-DIVIDER-CALC can also be used to (...)
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

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 (...)
使用指南: PDF
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
HSOIC (DDA) 8 Ultra Librarian
HVSSOP (DGN) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
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