Three-channel video amp with on-chip mux
The Texas Instruments THS7353PWG4 is a three-channel video amplifier that integrates a 2:1 multiplexer per channel, letting you switch between two video sources without an external mux IC. With a 150 MHz -3dB bandwidth and 300 V/µs slew rate, it handles standard-definition composite video (NTSC/PAL) cleanly and can push SVGA or 720p signals over short PCB traces.
Slew rate and bandwidth — what they mean for video
A 300 V/µs slew rate means the output can swing several volts in a few nanoseconds, preserving the sharp edges of video sync pulses. The 150 MHz bandwidth is well above the ~5 MHz needed for composite video, so the part has margin for gain flatness and group-delay variation across the passband. If you are routing multiple video inputs to a single ADC or display driver, the internal 2:1 mux saves a mux chip and the associated trace routing.
Each of the three channels can deliver 85 mA, enough to drive a 75 Ω back-terminated line directly. Total supply current is 18.8 mA typical, which is modest for a three-channel video amp.
Package and lifecycle
The THS7353PWG4 comes in a 20-TSSOP (4.40 mm width) for surface-mount assembly.