Maxim Integrated Products has announced the MAX2667/MAX2669, GPS/GNSS low-noise amplifiers (LNAs). Designed using Maxim's proprietary SiGe processes, these new LNAs feature 0.65dB noise figure. The company reports that this improves receive sensitivity and read range as compared to discrete or highly integrated CMOS solutions. Target applications include smartphones, personal navigation devices (PNDs), and other battery-powered handheld devices.
The MAX2667/MAX2669 provide different linearity options to suit system requirements. For designs that require a higher level of receive performance in the presence of signal blockers, the MAX2669 (at +4.5dBm) provides approximately 8dBm better in-band and out-of-band input third-order intercept point (IIP3) than the MAX2667 (at -3.5dBm), for a mere 4.0mA extra supply current.
For power efficient designs, the MAX2667 is optimized for a low operating supply current of 4mA (typical). When not in use, both LNAs have an optional logic-enabled shutdown mode that reduces supply current to less than 1microamp.
These LNAs are offered in a 0.4mm-pitch wafer-level package (WLP) that takes up 1mm2 of board space. They require four external components to complete the board-level design (plus an optional resistor for logic-enabled shutdown).
Price and Availability:
The MAX2667/MAX2669 operate from a 1.6V to 3.3V supply. Fully specified over the -40 degrees Celsius to +85 degrees Celsius extended temperature range, they are available in a 0.86mm x 1.26mm, 6-pin WLP. Prices start at $0.54 (1000-up, FOB USA). The MAX2667EVKIT and MAX2669EVKIT are also available for bench-level evaluation. Pricing for the EV kits is $110.00 (each, FOB USA).
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