The MAX2654/MAX2655/MAX2656 high IP3 low-noise amplifiers are designed for GPS, PCS, WLL, and satellite phone systems. They incorporate on-chip internal output matching to 50Ω, eliminating the need for external matching components. The MAX2654/MAX2655 feature a shutdown function that reduces operating current to 0.1µA, eliminating the need for an external supply switch. The MAX2654 operates in the GPS frequency of 1575MHz with 15.1dB of gain, 1.5dB noise figure, and only consumes 5.8mA. The MAX2655 is designed with high-input IP3 to improve operation in cellular applications where the cellular power amplifier leaks into the GPS receiver. The MAX2656 is designed for PCS phone applications with 13.5dB of gain in high-gain mode and 0.8dB of gain in low-gain mode (selected by a logic control) and 1.9dB noise figure. The IP3 of MAX2655/MAX2656 is adjustable by a single external bias resistor (RBIAS), allowing supply current to be optimized for a specific application. The MAX2654/MAX2655/MAX2656 operate from +2.7V to +5.5V single supply and are available in the miniature 6-pin SC70 package.
The Maxim MAX2654, MAX2655 and MAX2656 are low‑noise amplifiers designed for GPS, PCS, WLL and satellite‑phone applications. They integrate on‑chip 50 Ω output matching and offer variable IP3, gain‑step control and a shutdown mode to reduce power consumption.
The devices operate from a single 2.7 V to 5.5 V supply in a miniature 6‑pin SC70 package. Key features include high gain (up to 15.1 dB), low noise figures (as low as 1.5 dB), and adjustable IP3 via an external bias resistor.
| Gain (MAX2654 at 1575 MHz) | 15.1 dB |
|---|---|
| Noise Figure (MAX2654 at 1575 MHz) | 1.5 dB |
| Supply Voltage Range | +2.7 V to +5.5 V |
| Shutdown Current (MAX2654) | 0.1 µA |
| Package | 6‑Pin SC70 |
The shutdown current for MAX2654 is 0.1 µA.
MAX2655 delivers 14.1 dB of gain at 1575 MHz.
They operate from +2.7 V up to +5.5 V on a single supply.
The IP3 of MAX2656 is set by a single external bias resistor (R BIAS).