The MAX2657/MAX2658 high-gain, low-noise amplifiers (LNAs) are designed for GPS L1, Galileo, and GLONASS applications. Designed in Maxim’s advanced SiGe process, the devices achieve a high gain and an ultra-low-noise figure while maximizing the input-referred 1dB compression point and the 3rd-order intercept point. The MAX2657/MAX2658 operate from a +1.6V to +3.3V single supply. The MAX2657 is optimized for low current. The MAX2658 is optimized for high linearity. The shut- down feature in the device reduces the supply current to be less than 1µA. The MAX2657/MAX2658 are available in a very small, lead-free, RoHS-compliant, 0.86mm x 1.26mm x 0.65mm, wafer-level package (WLP).
The MAX2657 and MAX2658 are high‑gain, low‑noise amplifiers (LNAs) designed for GPS L1, Galileo, and GLONASS signals. They are offered in a tiny 0.86 mm × 1.26 mm × 0.65 mm wafer‑level package and target automotive navigation, asset‑tracking, handheld navigation devices, and other GNSS applications.\n\nKey features include a high‑power gain of up to 19 dB, an ultra‑low noise figure of 0.8 dB, a wide supply voltage range of 1.6 V to 3.3 V, and a shutdown mode that reduces current to less than 1 µA. Detailed electrical specifications, pin descriptions, and typical operating curves are provided for design reference.
| High‑Power Gain (MAX2657) | 19 dB |
|---|---|
| Ultra‑Low‑Noise Figure | 0.8 dB |
| Supply Voltage Range | 1.6 V to 3.3 V |
| Supply Current (MAX2657) | 4.1 mA |
| Input 1 dB Compression Point (MAX2657) | -12.5 dBm |
| Output Return Loss | 15 dB |
Both devices operate from a single‑supply voltage of +1.6 V to +3.3 V.
Applying a logic‑low to the SHDN pin disables the chip, reducing the supply current to less than 1 µA.