LT1675CGN#PBF

Video Processing Overview

The LT1675CGN#PBF is a high-speed RGB multiplexer with amplifiers housed in a 16-lead narrow body SSOP package. It integrates three SPDT switches and three current feedback amplifiers configured for a fixed gain of 2, designed to drive double-terminated 50Ω or 75Ω cables directly. The device operates on ±4V to ±6V supplies, drawing 33mA typically at ±5V. Key electrical parameters include a 250MHz small-signal bandwidth, an 1100V/µs slew rate, and a channel switching time of 2.5ns.

Video Processing Feature Summary

• Integrates three SPDT switches and three current feedback amplifiers for direct cable driving
• Features break-before-make switching to minimize unwanted signal coupling
• Includes chip disable functionality to reduce power dissipation near zero milliwatts
• Output short-circuit protected for enhanced reliability

Video Processing Applications

• Pixel switching for fast workstation graphics
• RGB video routing and multiplexing
• Coaxial cable drivers
• High-speed signal processing

Video Processing Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free compliance when sourcing this component. Confirm the 16-SSOP package designation matches your PCB footprint requirements. Ensure supply voltage rails remain within the specified ±4V to ±6V range during operation to maintain performance specifications.

Video Processing Selection Notes

Select this part for applications requiring simultaneous switching of Red, Green, and Blue channels. The fixed internal gain of 2 eliminates external resistors, simplifying design for standard 50Ω or 75Ω terminated lines. Consider the LT1675-1 variant if only a single channel is required for the specific application.

Video Processing Part Context

This component belongs to the LT1675 family of high-speed video multiplexers. It utilizes Linear Technology's proprietary high-speed bipolar process to achieve superior switching speeds compared to older discrete solutions. The device replaces bulky multi-chip designs by integrating multiple functions into a compact surface-mount package.

Video Processing Replacement Considerations

LT1675CS8-1#PBF (SOIC-8 Package)

Video Processing FAQ

How does the LT1675 handle switching transients?

The device uses fast current steering break-before-make SPDT switches. This design minimizes switching glitches to approximately 50mV peak-to-peak with a duration of just 5ns, preventing input feedthrough.

What is the purpose of the ENABLE pin?

Grounding the ENABLE pin allows normal operation. Taking this pin high or leaving it open shuts down the part, reducing supply current to approximately 100µA or less.