The OPA698 is a wideband, unity-gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when it attempts to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±10mV. 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 ensures that overdrive signals will be 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 will benefit 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 pinout SO-8 package. For higher gain, or transimpedance applications requiring output limiting with fast recovery, consider the OPA699.

• HIGH LINEARITY NEAR LIMITING
• FAST RECOVERY FROM OVERDRIVE: 1ns
• LIMITING VOLTAGE ACCURACY: ±10mV
• –3dB BANDWIDTH (G = +1): 450MHz
• GAIN BANDWIDTH PRODUCT: 250MHz
• SLEW RATE: 1100V/μs
• ±5V AND +5V SUPPLY OPERATION
• HIGH-GAIN VERSION AVAILABLE: OPA699
• APPLICATIONS
  • FAST LIMITING ANALOG-TO-DIGITAL CONVERTER (ADC) INPUT BUFFERS
  • CCD PIXEL CLOCK STRIPPING
  • VIDEO SYNC STRIPPING
  • HF MIXERS
  • IF LIMITING AMPLIFIERS
  • AM SIGNAL GENERATION
  • NONLINEAR ANALOG SIGNAL PROCESSING
  • OPA688 UPGRADE

All trademarks are the property of their respective owners.

• Architecture
• Voltage FB
• Number of channels (#)
• 1
• Total supply voltage (Min) (+5V=5, +/-5V=10)
• 5
• Total supply voltage (Max) (+5V=5, +/-5V=10)
• 12
• GBW (Typ) (MHz)
• 250
• BW @ Acl (MHz)
• 450
• Acl, min spec gain (V/V)
• 1
• Slew rate (Typ) (V/us)
• 1100
• Vn at flatband (Typ) (nV/rtHz)
• 5.6
• Vn at 1 kHz (Typ) (nV/rtHz)
• 11
• Iq per channel (Typ) (mA)
• 15.5
• Vos (offset voltage @ 25 C) (Max) (mV)
• 6
• 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) (uV/C)
• 15
• Output current (Typ) (mA)
• 120
• 2nd harmonic (dBc)
• 74
• 3rd harmonic (dBc)
• 87
• @ MHz
• 5

OPA698的完整型号有：OPA698ID、OPA698IDR，以下是这些产品的关键参数及官网采购报价：

OPA698ID，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网OPA698ID的批量USD价格：2.526（1000+）

OPA698IDR，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网OPA698IDR的批量USD价格：2.105（1000+）

DEM-OPA-SO-1A — 采用 SO-8 封装的单路运算放大器评估模块

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.

OPA698 PSpice Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

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TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能，允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

TINA-TI 安装需要大约 500MB。直接安装，如果想卸载也很容易。我们相信您肯定会爱不释手。

TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能，但不支持完整版 TINA 所提供的某些其他功能。

如需获取可用 TINA-TI 模型的完整列表，请参阅：SpiceRack - 完整列表

需要 HSpice (...)

ANALOG-ENGINEER-CALC — 模拟工程师计算器

模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。 lock = 需要出口许可（1分钟）

VOLT-DIVIDER-CALC — 分压器确定一组分压电阻

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. This calculator can also be used to design non-inverting attentuation circuits.

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