The MAX3272/MAX3272A is a 2.5Gbps limiting amplifier that uses a single +3.3V power supply and consumes only 33mA. It features 5ps deterministic jitter, 90ps edge speed, programmable loss of signal function, CML output interface, 20-pin 4mm x 4mm QFN or thin QFN package, and selectable output polarity.
The MAX3272 and MAX3272A are +3.3 V, 2.5 Gbps limiting amplifiers that accept a wide range of input voltages and provide a constant‑level output with controlled edge speeds. They include power‑detect loss‑of‑signal (LOS) indication, an optional squelch function, and selectable output polarity, making them suitable for low‑power optical receivers in Gigabit Ethernet, Fibre Channel, SONET/SDH, and other 2.5 Gbps interconnects.
Key features include a single‑supply operation at 33 mA typical current, deterministic jitter as low as 5 ps, edge speed around 90 ps, CML output interface, and a 20‑pin 4 mm × 4 mm QFN or thin QFN package. The datasheet provides absolute maximum ratings, detailed electrical characteristics, typical operating curves, pin descriptions, and design guidelines for coupling capacitors, LOS threshold programming, and offset‑correction loops.
| Supply Current (typical) | 33 mA |
|---|---|
| Input Data Rate | 2.5 Gbps |
| Input Voltage Range (differential) | 15 mV‑1200 mV p‑p |
| Deterministic Jitter (minimum) | 5 ps |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Type | 20‑pin 4 mm × 4 mm QFN or Thin QFN |
| LOS Hysteresis | 2 dB |
The typical supply current is 33 mA (44 mA maximum).
It supports an input data rate of 2.5 Gbps.
The device is offered in a 20‑pin QFN package measuring 4 mm × 4 mm.