LT1675CGN

Video Processing Overview

The LT1675CGN is a high-speed RGB multiplexer with amplifiers housed in a 16-lead SSOP package. It features three SPDT switches and three current feedback amplifiers configured for a fixed gain of 2. 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. It supports 100MHz pixel switching with a 50mV peak-to-peak switching transient.

Video Processing Feature Summary

• Integrates three SPDT switches and three current feedback amplifiers for direct cable driving
• Features break-before-make switching logic to minimize input feedthrough and crosstalk
• Includes internal gain setting to eliminate external resistors and reduce PCB footprint
• Offers chip disable functionality via the ENABLE pin to reduce power dissipation

Video Processing Applications

• Pixel switching for fast workstation graphics
• RGB video routing and signal switching
• Coaxial cable drivers for 50Ω or 75Ω terminated lines
• High-speed signal processing circuits

Video Processing Procurement Notes

Verify the specific suffix 'GN' corresponds to the 16-lead SSOP narrow body package. Confirm the operating temperature range matches the commercial specification (0°C to 70°C). Ensure supply voltages remain within ±6V limits during integration. Check for lead-free compliance if required by project specifications.

Video Processing Selection Notes

Select this component when space constraints require a compact solution for RGB multiplexing. The fixed gain of 2 is optimized for driving double-terminated cables. Consider the LT1675-1 variant for single-channel applications requiring smaller packages like MSOP or SO-8. Evaluate thermal performance given the junction temperature calculations provided in the datasheet.

Video Processing Part Context

The LT1675 series utilizes Linear Technology's proprietary high-speed bipolar process. This technology enables superior switching speeds compared to older configurations while maintaining low power consumption. The device replaces bulky multi-chip solutions by integrating switches and amplifiers into a single compact package.

Video Processing Replacement Considerations

LT1675CS8-1#PBF: Single-channel version in SO-8 package. LT1675CMS8-1#TR: Single-channel version in MSOP package. LT1203/LT1205: Older generation video MUX with wider supply range but lower speed.