OPA698

現行

均一增益穩定寬頻限壓放大器

產品詳細資料

Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 300 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1800 Vn at flatband (typ) (nV√Hz) 4 Vn at 1 kHz (typ) (nV√Hz) 5.9 Iq per channel (typ) (mA) 15.5 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail No Features Integrated Clamps Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 61 Input bias current (max) (pA) 10000000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 190 2nd harmonic (dBc) 74 3rd harmonic (dBc) 87 Frequency of harmonic distortion measurement (MHz) 5
Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 300 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1800 Vn at flatband (typ) (nV√Hz) 4 Vn at 1 kHz (typ) (nV√Hz) 5.9 Iq per channel (typ) (mA) 15.5 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail No Features Integrated Clamps Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 61 Input bias current (max) (pA) 10000000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 190 2nd harmonic (dBc) 74 3rd harmonic (dBc) 87 Frequency of harmonic distortion measurement (MHz) 5
SOIC (D) 8 29.4 mm² 4.9 x 6
  • High linearity near limiting
  • Fast recovery from overdrive: 1ns
  • Limiting voltage accuracy: ±5mV
  • –3db bandwidth (g = +1): 650MHz
  • Gain bandwidth product: 300MHz
  • Slew rate: 1800V/µs
  • ±5V and +5V supply operation
  • High-gain version available: OPA699
  • High linearity near limiting
  • Fast recovery from overdrive: 1ns
  • Limiting voltage accuracy: ±5mV
  • –3db bandwidth (g = +1): 650MHz
  • Gain bandwidth product: 300MHz
  • Slew rate: 1800V/µs
  • ±5V and +5V supply operation
  • High-gain version available: OPA699

The OPA698 is a wide-band, unity-gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when attempting to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±5mV.

The op amp operates linearly to within 20mV of the output limit voltages. The combination of a narrow nonlinear range and the low limiting offset allows the limiting voltages to be set within 100mV of the desired linear output range. A fast 1ns recovery from limiting provides overdrive signals that are transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA698 to be used in all standard op-amp applications.

Nonlinear analog signal processing benefits from the ability of the OPA698 to sharply transition from linear operation to output limiting. The quick recovery time supports high-speed applications.

The OPA698 is available in an industry-standard pin-out SOIC-8 package. For higher gain, or transimpedance applications that require output limiting with fast recovery, consider the OPA699.

The OPA698 is a wide-band, unity-gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when attempting to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±5mV.

The op amp operates linearly to within 20mV of the output limit voltages. The combination of a narrow nonlinear range and the low limiting offset allows the limiting voltages to be set within 100mV of the desired linear output range. A fast 1ns recovery from limiting provides overdrive signals that are transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA698 to be used in all standard op-amp applications.

Nonlinear analog signal processing benefits from the ability of the OPA698 to sharply transition from linear operation to output limiting. The quick recovery time supports high-speed applications.

The OPA698 is available in an industry-standard pin-out SOIC-8 package. For higher gain, or transimpedance applications that require output limiting with fast recovery, consider the OPA699.

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重要文件 類型 標題 格式選項 日期
* Data sheet OPA698 Unity-Gain Stable, Wideband Voltage Limiting Amplifier datasheet (Rev. E) PDF | HTML 2025年 4月 10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 RLC Filter Design for ADC Interface Applications (Rev. A) 2015年 5月 13日
Application note ADC Input Protection 2013年 9月 4日
Application note Video Designs Using High-Speed Amplifiers (Rev. A) 2005年 2月 3日
Application note Noise Analysis for High Speed Op Amps (Rev. A) 2005年 1月 17日
Application note ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers 2004年 4月 22日
Application note Measuring Board Parasitics in High-Speed Analog Design 2003年 7月 7日

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開發板

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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模擬型號

OPA698 PSpice Model

SBOC045.ZIP (1 KB) - PSpice Model
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
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian

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