The MAX4278 is a video/RF cable driver featuring high gain, high precision, high output current, low noise and low differential gain and phase errors. It has a -3dB bandwidth of 330MHz and is preset for unity voltage gain (0dB).
The MAX4178 and MAX4278 are ±5 V, wide‑bandwidth, fast‑settling closed‑loop buffers designed for video and RF cable‑driving applications. MAX4178 provides a unity (0 dB) gain with a -3 dB bandwidth of 330 MHz, while MAX4278 offers a +2 (6 dB) gain and a 310 MHz bandwidth. Both devices feature high slew rates, low input offset, low noise, and strong ESD protection, making them suitable for high‑speed video routing, broadcast, and high‑definition TV systems.
The datasheet includes absolute maximum ratings, DC and AC electrical characteristics, typical operating curves, and layout recommendations. It also covers driving capacitive loads up to 100 pF, PCB grounding and trace guidelines, and example applications such as flash‑ADC pre‑amps and high‑performance video distribution amplifiers. Package options include DIP, SO, µMAX and SOT23‑5. This manual is written in Chinese.
| MAX4178 Bandwidth (‑3 dB) | 330 MHz |
|---|---|
| MAX4278 Voltage Gain | +2 (6 dB) |
| Slew Rate (MAX4178) | 1300 V/µs |
| Slew Rate (MAX4278) | 1600 V/µs |
| Supply Current | 8 mA |
| Input Offset Voltage | 0.5 mV |
| Input Bias Current | 1 µA |
| ESD Protection | 8000 V |
| Operating Temperature Range (most grades) | -40 °C to +85 °C |
| Package Options | DIP, SO, µMAX, SOT23‑5 |
The MAX4178 has a -3 dB bandwidth of 330 MHz.
The MAX4278 is preset for a voltage gain of +2, which is 6 dB.
The absolute maximum supply voltage (VCC to VEE) is 12 V.
Yes, they can drive capacitive loads up to 100 pF without oscillation, though some peaking may occur.