The MAX2642/MAX2643 low-cost, high third-order intercept point (IP3), low-noise amplifiers (LNAs) are designed for applications in cellular, ISM, SMR, and PMR systems. They feature a programmable bias, allowing the IP3 and supply current to be optimized for specific applications. These LNAs provide up to 0dBm input IP3 while maintaining a low noise figure of 1.3dB. The gain for these devices is typically 17dB. The MAX2642 also features a 13dB attenuation step, which extends the LNA’s dynamic range. Both devices feature a shutdown mode that minimizes power consumption. On-chip output matching saves board space by reducing the number of external components. The MAX2642/MAX2643 are designed on a low-noise, advanced silicon-germanium (SiGe) process technolo- gy. They operate from a +2.7V to +5.5V single supply and are available in the ultra-small 6-pin SC70 package.
The MAX2642 and MAX2643 are low‑cost, high‑third‑order‑intercept‑point (IP3) low‑noise amplifiers (LNAs) designed for cellular, ISM, SMR and PMR applications. They feature programmable bias to optimize IP3 and supply current, delivering up to 0 dBm input IP3 while maintaining a low noise figure of 1.3 dB. Typical gain is 17 dB and the MAX2642 includes a 13 dB attenuation step to extend dynamic range.
Both devices operate from a single supply of +2.7 V to +5.5 V and are offered in an ultra‑small 6‑pin SC70 package. They provide on‑chip output matching, a low‑power shutdown mode, and detailed pin functions for bias control, RF input, and RF output. The datasheet includes extensive electrical characteristics, scattering parameters, noise parameters, and layout recommendations.
| Frequency Range | 800 MHz – 1000 MHz |
|---|---|
| Typical Gain | 17 dB |
| Noise Figure (900 MHz) | 1.3 dB |
| Supply Voltage | +2.7 V to +5.5 V |
| Package | SC70‑6 |
The MAX2642 provides a 13 dB attenuation step.