The MAX4200–MAX4205 are ultra-high-speed, open-loop buffers featuring high slew rate, high output current, low noise, and excellent capacitive-load-driving capability. They use a proprietary architecture to achieve up to 780MHz -3dB bandwidth, 280MHz 0.1dB gain flatness, 4200V/µs slew rate, and ±90mA output current drive capability. They are suitable for driving high-speed analog-to-digital converter (ADC) inputs or for data-communications applications.
The MAX4200‑MAX4205 family are ultra‑high‑speed, open‑loop buffers offering up to 780 MHz -3 dB bandwidth, low voltage‑noise (2.1 nV/√Hz) and current‑noise (0.8 pA/√Hz), and high output‑drive capability of ±90 mA. Variants provide integrated termination resistors (50 Ω for MAX4201/MAX4204, 75 Ω for MAX4202/MAX4205) and operate from ±5 V supplies while drawing only 2.2 mA quiescent current per buffer.
The datasheet includes absolute maximum ratings, DC and AC electrical characteristics, typical operating curves, pin descriptions, package drawings, and application guidelines for driving high‑speed ADC inputs, DAC buffers, and transmission‑line drivers. It also provides ordering information and layout recommendations for optimal high‑frequency performance.
| Supply Voltage Range | ±5 V (±4 V to ±5.5 V) |
|---|---|
| Slew Rate | 4200 V/µs |
| Output Drive Current | ±90 mA |
| Bandwidth (-3 dB) | up to 780 MHz |
| Gain Flatness (0.1 dB) | 280 MHz |
| Voltage‑Noise Density | 2.1 nV/√Hz |
| Current‑Noise Density | 0.8 pA/√Hz |
| Operating Temperature Range | -40 °C to +85 °C |
| Integrated Termination (50 Ω) | MAX4201, MAX4204 |
| Integrated Termination (75 Ω) | MAX4202, MAX4205 |
The devices operate from dual supplies of ±5 V (range ±4 V to ±5.5 V).
MAX4201 and MAX4204 have integrated 50 Ω termination resistors.
The buffers provide a slew rate of 4200 V/µs.