MAX4028/MAX4029 are 5V, triple/quad, 2:1 voltage- feedback multiplexer-amplifiers with input clamps and a fixed gain of +2V/V (6dB). Channel 1 (IN1A and IN1B) inputs are clamped to the video sync tip of the input sig- nal, while the remaining inputs can be clamped to either the video sync tip or the video sync of channel 1 (IN1_). The latter is referred to as a key clamp and is pin selec- table. Selectable clamp/key-clamp inputs and fixed-gain video output buffers make the MAX4028/MAX4029 ideal for video-source switching applications such as automo- tive entertainment systems, video projectors, and dis- plays/TVs. Both devices have 20ns channel switching times and low ±10mVP-P switching transients, making them ideal for high-speed video switching applications such as on-screen display (OSD) insertion. The MAX4028/MAX4029 have a -3dB large-signal (2VP-P) bandwidth of 130MHz, a -3dB small-signal bandwidth of 210MHz, and a 300V/µs slew rate. Low differential gain and phase errors of 0.2% and 0.4°, respectively, make these devices ideal for broadcast video applications. The MAX4028/MAX4029 are specified over the -40°C to +85°C extended temperature range and are offered in 16-pin and 20-pin TSSOP/SO packages.
The MAX4028 and MAX4029 are triple/quad, 2:1 voltage‑feedback video multiplexer‑amplifiers with input clamps and a fixed gain of +2 V/V (6 dB). They provide selectable sync‑tip or key‑clamp inputs, 20 ns channel switching, and ultra‑low +10 mV p‑p switching transients, making them suitable for automotive entertainment, video projectors, displays, and broadcast video applications.
The devices operate from a single +5 V supply, are offered in 16‑pin and 20‑pin TSSOP/SO packages, and feature a low‑power, high‑impedance disable mode. Detailed electrical characteristics, pin descriptions, and package dimensions are provided for design integration.
| Channel switching time | 20 ns |
|---|
The devices switch channels in 20 ns.
The MAX4029 is a quad (four‑channel) 2:1 video multiplexer‑amplifier.