Description

The MAX4987AE is a high-speed, quad/triple, single-pole/double-throw video switch with an on-board closed-loop buffer amplifier. It features a +6dB gain, 250MHz -3dB bandwidth, 70MHz 0.1dB gain flatness, and 1250V/µs slew rate. This device is designed for a wide range of video applications, offering fast switching time (3ns) and fast settling time (12ns for a 4V step). It has low differential gain/phase errors (0.03%/0.06°) and a wide bandwidth, making it ideal for both composite-video and RGB applications. The buffer amplifier can deliver ±2.5V into back-terminated 50Ω or 75Ω cables, and ±2V to a 75Ω load, allowing multiple cables to be driven from a single output.

Specifications and features

• High Speed:
  • 250MHz Small-Signal -3dB Bandwidth
  • 135MHz Full-Power -3dB Bandwidth
• 70MHz 0.1dB Gain Flatness
• 1250V/µs Slew Rate
• 12ns to 0.1% Settling Time
• 0.03°/0.06% Differential Phase/Gain Error
• 2pF Input Capacitance
• 3ns Channel-Switching Time
• 120mVp-p Channel-Switching Transient
• Three-State Output Allows Large Switch Arrays
• Directly Drives 50Ω or 75Ω Back-Terminated Cables

Application Scenarios

• Video Switching and Routing
• Broadcast-Quality Composite-Video Multiplexing
• Workstations
• Video Editing
• Broadcast and High-Definition TV Systems
• Multimedia Products
• Medical Imaging