Samsung has selected a pair of Anadigics power amplifiers (PAs) for its Galaxy Tab. The AWC6323 will go into the Tabs offered by Sprint and Verizon Wireless in the United States, while the AWU6601 will power the Tabs in the Korean market. Both PAs are part of the Anadigics High-Efficiency-at-Low-Power (HELP) portfolio of products targeting 3G devices. 

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Based on Google’s Android operating system, the Galaxy Tab is Samsung’s first tablet computing device. It boasts a 7-in. WSVGA TFT-LCD, a 1.3-Mpixel front camera, and a 3.0-Mpixel rear camera, as well as a 1.0-GHz Cortex A8 application processor. It also includes 3G HSPA connectivity, with 802.11n Wi-Fi and Bluetooth 3.0. And, its 16/32-Gbyte memory can be expanded with a 32-Gbyte MicroSD card. 

The AWC6323 is the first Anadigics HELP3E dual-band CDMA PA in a 3- by 5- by 1-mm footprint. According to the company, it features the industry’s lowest quiescent current for a CDMA PA. It’s manufactured on an advanced indium-gallium-phosphide (InGaP) heterojunction bipolar transistor (HBT) monolithic microwave integrated circuit (MMIC) technology. It supports the cell (824 to 849 MHz) and PCS (1850 to 1910 MHz) bands.

Also, the AWC6323 offers three mode states to achieve high-power added efficiencies at several power levels during phone operation. It features built-in directional couplers for each band with a common coupler port, eliminating the surface-mount (SMT) couplers placed on the phone board. Additionally, it meets the stringent linearity requirements of CDMA EV-DO Revisions A and B modulations for very high data rates for smart phones and data cards.

The AWU6601 incorporates the HELP3 technology for low power consumption without the need for an external voltage regulator, Anadigics says. The module integrates a “daisy-chainable” directional coupler, eliminating the need for external couplers and simplifying device board layouts. It’s also built on InGaP HBT technology, and its self-contained 3- by 3- by 1-mm SMT package incorporates matching networks optimized for output power, efficiency, and linearity.

Furthermore, the AWU6601 is HSPA-compliant and features simple calibration with only two bias modes. It offers a low quiescent current of 8 mA as well as low leakage current in shutdown mode at less than 1 mA. Optimized for a 50-W system, it features an RoHS-compliant (Restrictions on Hazardous Substances) package, 260°C MSL-3.

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