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330MHz, Gain of +1/Gain of +2 Closed-Loop Buffers

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • High Speed
    • 330MHz -3dB Bandwidth (MAX4178)
    • 310MHz -3dB Bandwidth (MAX4278)
    • 250MHz Full-Power Bandwidth (VOUT = 2VP-P)
    • 150MHz 0.1dB Flatness Bandwidth
    • 1300V/µs Slew Rate (MAX4178)
    • 1600V/µs Slew Rate (MAX4278)
  • Low Differential Phase/Gain Error: 0.01°/0.04%
  • 8mA Supply Current
  • 1µA Input Bias Current
  • 0.5mV Input Offset Voltage
  • 5nV per √Hz Input-Referred Voltage Noise
  • 2pA√Hz Input-Referred Current Noise
  • 1.0% Max Gain Error with 100Ω Load
  • Short-Circuit Protected
  • 8000V ESD Protection
  • Available in Space-Saving SOT23 Package

Applications/Uses

  • Broadcast and High-Definition TV Systems
  • Communication Systems
  • High-Speed Cable Drivers
  • Medical Imaging
  • Precision High-Speed DAC/ADC Buffers
  • Video Routing and Switching Systems

Description

The MAX4178/MAX4278 are ±5V, wide-bandwidth, fast-settling, closed-loop buffers featuring high slew rate, high precision, high output current, low noise, and low differential gain and phase errors. The MAX4178, with a -3dB bandwidth of 330MHz, is preset for unity voltage gain (0dB). The MAX4278 is preset for a voltage gain of +2 (6dB) and has a 310MHz -3dB bandwidth.

The MAX4178/MAX4278 feature the high slew rate and low power that are characteristic of current-mode feedback amplifiers. However, unlike conventional current-mode feedback amplifiers, these devices have a unique input stage that combines the benefits of current-feedback topology with those of the traditional voltage-feedback topology. This combination results in low input offset voltage and bias current, low noise, and high gain precision and power-supply rejection.

The MAX4178/MAX4278 are ideally suited for driving 50Ω or 75Ω> loads. They are the perfect choice for high-speed cable-driving applications, such as video routing. The MAX4178/MAX4278 are available in DIP, SO, space-saving µMAX®, and SOT23 packages.

Simplified Block Diagram

MAX4178, MAX4278: Typical Operating Circuit MAX4178, MAX4278: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .