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

OPA814

現行

600-MHz、高精密度、單位增益穩定、FET 輸入運算放大器

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產品規格表

OPA814

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) 6 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 GBW (typ) (MHz) 250 BW at Acl (MHz) 600 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 750 Vn at flatband (typ) (nV√Hz) 5.3 Vn at 1 kHz (typ) (nV√Hz) 9.5 Iq per channel (typ) (mA) 16 Vos (offset voltage at 25°C) (max) (mV) 0.25 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 100 Input bias current (max) (pA) 20 Offset drift (typ) (µV/°C) 1 Iout (typ) (mA) 70 2nd harmonic (dBc) -110 3rd harmonic (dBc) -130 Frequency of harmonic distortion measurement (MHz) 1
Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 6 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 GBW (typ) (MHz) 250 BW at Acl (MHz) 600 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 750 Vn at flatband (typ) (nV√Hz) 5.3 Vn at 1 kHz (typ) (nV√Hz) 9.5 Iq per channel (typ) (mA) 16 Vos (offset voltage at 25°C) (max) (mV) 0.25 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 100 Input bias current (max) (pA) 20 Offset drift (typ) (µV/°C) 1 Iout (typ) (mA) 70 2nd harmonic (dBc) -110 3rd harmonic (dBc) -130 Frequency of harmonic distortion measurement (MHz) 1
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Wide bandwidth:
    • Gain-bandwidth product: 250 MHz
    • Bandwidth (G = 1 V/V): 600 MHz
    • Large-signal bandwidth (2 V PP): 200 MHz
    • Slew rate: 750 V/µs
  • High precision:
    • Input offset voltage: 250 µV (maximum)
    • Input offset voltage drift: 3.5 µV/°C (maximum)
  • Input voltage noise: 5.3 nV/√Hz
  • Input bias current: 2 pA
  • Low distortion (R L = 100 Ω, V O = 2 V PP):
    • HD2, HD3 at 10 MHz: –75 dBc, –85 dBc
  • Supply range: 6 V to 12.6 V
  • Supply current: 16 mA
  • Performance upgrade to OPA656
  • Wide bandwidth:
    • Gain-bandwidth product: 250 MHz
    • Bandwidth (G = 1 V/V): 600 MHz
    • Large-signal bandwidth (2 V PP): 200 MHz
    • Slew rate: 750 V/µs
  • High precision:
    • Input offset voltage: 250 µV (maximum)
    • Input offset voltage drift: 3.5 µV/°C (maximum)
  • Input voltage noise: 5.3 nV/√Hz
  • Input bias current: 2 pA
  • Low distortion (R L = 100 Ω, V O = 2 V PP):
    • HD2, HD3 at 10 MHz: –75 dBc, –85 dBc
  • Supply range: 6 V to 12.6 V
  • Supply current: 16 mA
  • Performance upgrade to OPA656

The OPA814 is a unity-gain stable, voltage-feedback operational amplifier for high-speed, high-precision, and wide-dynamic-range applications.

The OPA814 has a low-noise junction gate field-effect transistor (JFET) input stage that features a wide gain bandwidth of 250 MHz and a supply range from 6 V to 12.6 V. The fast slew rate of 750 V/µs allows a wide large-signal bandwidth and low distortion when used as high impedance buffer in high-speed digitizers, active probes, and other test and measurement applications.

The OPA814 offers extremely low input offset voltage of ±250 µV and offset voltage drift of ±3.5-µV/°C. The combination of picoamperes of input bias current and low input voltage noise (5.3 nV/√ Hz) makes the OPA814 an excellent wideband transimpedance amplifier in optical test and communication equipment, as well as medical and scientific instrumentation.

The OPA814 is available in an 8-pin SOIC package. This device is specified to operate over the industrial temperature range of –40°C to +85°C.

The OPA814 is a unity-gain stable, voltage-feedback operational amplifier for high-speed, high-precision, and wide-dynamic-range applications.

The OPA814 has a low-noise junction gate field-effect transistor (JFET) input stage that features a wide gain bandwidth of 250 MHz and a supply range from 6 V to 12.6 V. The fast slew rate of 750 V/µs allows a wide large-signal bandwidth and low distortion when used as high impedance buffer in high-speed digitizers, active probes, and other test and measurement applications.

The OPA814 offers extremely low input offset voltage of ±250 µV and offset voltage drift of ±3.5-µV/°C. The combination of picoamperes of input bias current and low input voltage noise (5.3 nV/√ Hz) makes the OPA814 an excellent wideband transimpedance amplifier in optical test and communication equipment, as well as medical and scientific instrumentation.

The OPA814 is available in an 8-pin SOIC package. This device is specified to operate over the industrial temperature range of –40°C to +85°C.
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重要文件 類型 標題 格式選項 日期
* Data sheet OPA814600-MHz, High-Precision, Unity-Gain Stable, FET-Input Operational Amplifier datasheet (Rev. A) PDF | HTML 2023年 11月 6日
Product overview High Speed Amplifiers for Motor Encoders and Position Sensing PDF | HTML 2025年 4月 11日
Product overview High Speed Amplifiers for In-Vitro Diagnostics (IVD) Analog Front End PDF | HTML 2025年 4月 10日
Product overview Pairing High-Speed JFET Amplifiers With Hi-Z DAQ Systems PDF | HTML 2024年 4月 8日
Application note Noise Analysis for High Speed Op Amps (Rev. A) 2005年 1月 17日

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

DEM-OPA-DTK-EVM — 採用 8 針腳 SON (DTK 和 DRG) 封裝，適用於高速、頻寬運算放大器的評估模組

DEM-OPA-DTK-EVM 是一種展示固定裝置，可協助設計人員評估高速、寬頻運算放大器的運作和性能。此未組裝的空板與以 8 針腳 SON (DTK 和 DRG) 封裝供應之單通道放大器產品相容。電路板的設計旨在配合多種放大器配置，提供最大彈性及易用性。

使用指南: PDF | HTML
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DEM-OPA-SO-1A — 適用於 SO-8 封裝的單路運算放大器評估模組

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

使用指南: PDF
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開發板

DEM-OPA-SOT-1A — 適用於 SOT-23 5 針腳和 6 針腳封裝的單路運算放大器評估模組

DEM-OPA-SOT-1A 是一種展示電路板，用於評估高速、寬頻運算放大器的運作和性能。此未組裝的 PC 電路板與採用小型電晶體 (SOT) DBV 封裝的產品相容。

使用指南: PDF
TI.com 無法提供
模擬型號

OPA814 TINA-TI Reference Design

SBOMCE1.ZIP (15 KB) - TINA-TI Reference Design
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計算工具

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

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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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
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
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