W-CDMA 2.1GHz LNA/MIXERS DRAW LESS THAN 8mA
SUNNYVALE, CA-November 28, 2000-Maxim Integrated Products announces the MAX2387/MAX2388/MAX2389 miniature low-noise amplifier (LNA)/downconverter mixers. They are designed for W-CDMA applications such as single-mode ARIB (Japan) and dual-mode ETSI-UMTS (Europe) third-generation cellular phones. The devices feature ultra-low current consumption, exceptionally low noise figure, and an ultra-small leadless package. They replace discrete designs in less than half the space with improved performance.
The MAX2387/MAX2388/MAX2389 are built on Maxim's SiGe production process and contain a dual-gain LNA with +4dBm IIP3 and 15dB gain at its highest gain setting and an ultra-low current mixer with 10dB gain and +6dBm IIP3. Cascade noise figure is only 2.3dB. While in high-gain mode, the devices draw between 8mA and 11mA, which drops to between 5mA and 7mA in low-gain mode. Since the phone will spend most of the time in low-gain mode, this results in an effective receive standby current consumption of less than 8mA. Apart from current consumption, the devices differ in gain step size (18dB or 32dB) and required LO input power (-10dBm or -4dBm).
The MAX2387/MAX2388/MAX239 come in a new 12-pin 3mm x 3mm leadless QFN package and require very few external components. Compared to a discrete design, cost, implementation size, and performance are dramatically improved. Prices start at $2.25 (1000-up, FOB USA).
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