The MAX4027 is a triple, wideband, 2-channel, noninverting gain-of-two video amplifier with input multiplexing, capable of driving up to two back-terminated video loads. The MAX4027 features current-mode feedback amplifiers configured for a gain of two (+6dB) with a -3dB large-signal bandwidth of 200MHz. The device has low (0.012%/0.014°) differential gain and phase errors, and operates from ±5V supplies. The MAX4027 is ideal for use in broadcast and graphics video systems because of the low 2pF input capacitance, channel-to-channel switching time of only 15ns, and wide 62MHz, large-signal 0.1dB bandwidth. High-impedance output disabling allows the MAX4027 to be incorporated into large switching arrays with minimal interaction with the source. Specified over the -40°C to +85°C extended temperature range, the MAX4027 is available in 14-pin SO and TSSOP packages. Applications include video source selection (multiplexing), picture in picture (PIP) insertion, crosspoint expansion, coaxial cable drivers, etc.
The MAX4027 combines three 2:1 multiplexers with a fixed gain of +2 V/V (+6 dB) and operates from ±5 V supplies. It drives up to two back‑terminated video loads while maintaining low distortion, low differential gain/phase error, and a constant 2 pF input capacitance.
Designed for broadcast and graphics video systems, the device offers fast 15 ns channel‑switching, high‑impedance output disable, and a wide operating temperature range of –40 °C to +85 °C. The datasheet provides detailed electrical characteristics, pin descriptions, layout guidelines, and package information for both SO and TSSOP versions.
| Gain | 2 V/V (+6 dB) |
|---|---|
| Small‑signal –3 dB Bandwidth | 200 MHz |
| Channel‑Switching Time | 15 ns |
| Input Capacitance | 2 pF |
| Differential Gain Error | 0.012 % |
| Supply Voltage | ±5 V |
| Operating Temperature Range | –40 °C to +85 °C |
| Output Short‑Circuit Current | ±143 mA |
The MAX4027 switches between channels in 15 ns.
Each input has a constant low capacitance of 2 pF.
It operates from ±5 V power supplies.
The amplifier provides a fixed gain of 2 V/V, which is +6 dB.