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OPA643PB

产品分类: 运算放大器
厂牌: TEXAS INSTRUMENTS
产品描述: 1KV/μs 19μA PDIP-8
供应商型号: 25E-OPA643PB
供应商: 国内现货
标准整包数: 1
TEXAS INSTRUMENTS 运算放大器 OPA643PB

OPA643PB概述

    # Wideband Low Distortion, High Gain Operational Amplifier: The OPA643
    1. Product Introduction
    The OPA643 is a high-performance operational amplifier designed to provide exceptional speed and dynamic range. This operational amplifier stands out due to its ultra-low distortion, high gain-bandwidth product, and excellent noise performance, making it an ideal choice for a wide array of demanding applications. The core advantages of the OPA643 include:
    - Applications: Base station ADC preamp, ADC/DAC buffer amplifiers, low distortion IF amplifiers, transimpedance amplifiers, low noise preamplifiers, video amplification, and test instrumentation.

    - Core Features: Exceptional low distortion (–90 dBc at 5 MHz), low noise (2.3 nV/√Hz), wide gain-bandwidth product (800 MHz), high slew rate (1000 V/µs), and high open-loop gain (95 dB).
    2. Technical Parameters
    The following technical specifications outline the capabilities of the OPA643:
    | Parameter | Minimum | Typical | Maximum | Unit |

    | Offset Voltage | ±2.5 | ±4.0 | ±0.5 | mV |
    | Gain Bandwidth Product | 800 MHz |
    | Slew Rate | 920 | 1000 V/µs |
    | Open-Loop Gain | 80 | 95 | 87 | dB |
    | Input Noise Voltage | 2.3 nV/√Hz |
    | Output Current | ±40 | ±60 | ±65 | mA |
    | Common Mode Input Range | ±2.5 | ±3.0 V |
    | Temperature Range | -40 | +85 °C |
    Additional electrical characteristics such as linearity, CMRR (common-mode rejection ratio), and PSRR (power supply rejection ratio) ensure the OPA643 maintains high performance under varying conditions.
    3. Product Characteristics and Advantages
    The OPA643’s standout features make it highly suitable for applications demanding high precision and high bandwidth:
    - Exceptional Linearity: The OPA643 achieves ultra-low distortion (–90 dBc at 5 MHz), making it ideal for video, audio, and high-speed communication systems where distortion needs to be minimized.

    - Wideband Performance: With a gain-bandwidth product of 800 MHz, the OPA643 supports fast transient responses and stable operation across a broad spectrum.
    - High Dynamic Range: High slew rate (1000 V/µs) ensures accurate tracking of high-speed signals, while the open-loop gain of 95 dB guarantees exceptional closed-loop stability.
    - Compact Form Factor: Available in the SOT23-5 package, it offers a compact footprint, making it suitable for space-constrained designs.
    4. Application Examples and Usage Recommendations
    Example 1: High Dynamic Range 20MSPS Digitizer
    One prominent use case involves the digitizer application shown in the data sheet. Here, the OPA643 serves as a buffer amplifier, driving the ADS805 ADC. By carefully selecting the resistor values and capacitor configurations, the design achieves high spurious-free dynamic range (SFDR) performance, especially beneficial in high-frequency applications.
    Recommendations:
    - Ensure proper power supply decoupling with additional 0.1µF capacitors on pins 5 and 8 for reduced harmonic distortion.
    - Adjust the DC operating point for optimal distortion performance by level-shifting the signal to a non-ground reference.
    Example 2: Transimpedance Amplifier for Photodiodes
    For photodiode applications, the OPA643 provides high gain-bandwidth performance necessary for converting small photocurrents into measurable voltage levels. The feedback resistor selection is critical for achieving desired gain and bandwidth trade-offs.
    Recommendations:
    - Use external compensation techniques if applying the OPA643

OPA643PB参数

参数
最小工作供电电压 -
最大工作供电电压 -
每个通道的输出电流 -
通道数量 -
关闭 -
典型压摆率 1KV/μs
CMRR - 共模抑制比 -
典型供电电流 -
电路数 -
-3db带宽 -
Vos - 输入偏置电压 -
电流 - 输入偏置 19μA
放大器类型 -
输出类型 -
典型增益带宽 -
典型输入噪声电压密度 -
通用封装 PDIP-8
应用等级 工业级

OPA643PB厂商介绍

Texas Instruments(简称TI),是一家总部位于美国德克萨斯州达拉斯的全球性半导体设计与制造公司,成立于1930年。TI是全球领先的模拟技术、数字信号处理和微控制器(MCU)领域的供应商。

主营产品分类:
1. 模拟产品:包括电源管理、信号链和接口产品,广泛应用于工业、汽车、医疗等领域。
2. 嵌入式处理:包括微控制器(MCU)、数字信号处理器(DSP)和处理器,广泛应用于消费电子、工业控制、汽车电子等领域。
3. 无线产品:包括无线通信模块和解决方案,应用于物联网、智能城市、智能家居等领域。
4. 计算器:TI也是知名的计算器制造商,拥有多款科学计算器和图形计算器产品。

应用领域:
TI的产品和技术广泛应用于通信、计算机、消费电子、汽车、工业、医疗等多个领域。

优势:
1. 技术创新:TI在模拟、嵌入式处理和无线通信领域拥有强大的研发实力和专利技术。
2. 产品多样性:TI提供广泛的产品线,满足不同客户的需求。
3. 客户支持:TI在全球设有技术支持中心,为客户提供专业的技术支持和解决方案。
4. 供应链管理:TI拥有强大的供应链管理能力,确保产品的稳定供应和交付。

OPA643PB数据手册

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TEXAS INSTRUMENTS 运算放大器 TEXAS INSTRUMENTS OPA643PB OPA643PB数据手册

OPA643PB封装设计

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价格梯度 中国香港交货 内地交货(含增值税)
10+ ¥ 36.0783
5000+ ¥ 34.4633
10000+ ¥ 33.2149
库存: 792
起订量: 278 增量: 0
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最小起订量为:10
合计: ¥ 360.78
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