Low-noise amplifiers ideal for handheld devices

Maxim Integrated Products has introduced MAX2666/MAX2668 low-noise amplifiers (LNAs) for high-data-rate wireless protocols such as HSPA and LTE found in smartphones and tablets.

Each LNA features three programmable gain states, allowing customers to dynamically adjust linearity and sensitivity to optimise system performance in the face of varying input-signal strengths.

If interference from adjacent signals is particularly high, as is often the case with mobile devices, the gain can be increased to maintain optimum blocker performance.

Ensuring peak system performance regardless of signal conditions, the MAX2666/MAX2668 are said to be well suited for HSPA/LTE-based radio systems such as smartphones and tablets.

Maxim's advanced SiGe BiCMOS process enables these broadband LNAs to combine superior performance characteristics with an ultra-compact footprint.

They deliver 15dB of gain, feature a low 1.0dB noise figure for improved receive sensitivity over discrete or CMOS solutions, and operate over the I, IV, V, VI, VII, and X UTMS frequency bands.

Maxim's design enables a package measuring 1.5 x 1.0 x 0.55mm, facilitating its use in space-constrained applications such as handheld devices and cellular-based data cards.

Only one external component is required to complete the board-level design.

Maxim said LNA customers can expect longer battery life in their end equipment due to low power consumption and low supply voltage.

The MAX2666/MAX2668 operate with a low3.8mA (typical) supply current and less than 100uA in the lowest gain mode.

They run off a 2.7V to 3.3V supply.

Fully specified over the -40C to +85C extended temperature range the MAX2666/MAX2668 are available in a six-pin, ultra-thin land-grid array (LGA) package.

Evaluation kits are available for bench-level evaluation.

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