SKY77336 Datasheet | Skyworks Solutions

Features - High efficiency: - GSM850, 55% - GSM900, 55% - DCS, 53% - PCS, 53% - Small outline - 5 x 5 mm - Low profile - 1.15 mm Max - Low VRAMP current - 10 μA Description SKY77336 Power Amplifier Module (PAM) is designed in a pact form factor for quad-band cellular handsets prising GSM850/900, DCS1800 and PCS1900, supporting Gaussian Minimum-Shift Keying (GMSK) and Polar Enhanced Data for GSM Evolution (EDGE) modulation. Class 12 General Packet Radio Service (GPRS) multi-slot operation is also supported. The module consists of GSM850/900 PA and DCS1800/PCS1900 PA blocks, impedance matching circuitry for 50 Ω input and output impedances, and a Power Amplifier Control (PAC) block. The custom CMOS integrated circuit provides the internal PAC function and interface circuitry. Fabricated in In Ga P/Ga As, the Heterojunction Bipolar Transistor (HBT) PA blocks support the GSM850/900 bands and DCS1800/PCS1900 bands. Both PA blocks share mon power supply pads to distribute current. The In Ga P/Ga As die, Silicon (Si) controller die, and passive ponents are mounted on a multi-layer laminate substrate and the entire assembly is encapsulated with plastic overmold. RF input and output ports of the SKY77336 are internally matched to a 50 Ω load to reduce the number of external ponents for a quad-band design. Extremely low leakage current (10 μA, typical) of the PAM module maximizes handset standby time. The SKY77336 also contains band-select switching circuitry to select GSM (logic 0) or DCS/PCS (logic 1) as determined from the Band Select (BS) signal. See Figure 1 shown below. Figure 1. SKY77336 Functional Block Diagram Skyworks Solutions, Inc. - Phone [781] 376-3000 - Fax [781] 376-3100 - sales@skyworksinc. - .skyworksinc. 200780E - Skyworks Proprietary and Confidential information. - Products and product information are subject to change without notice. - September 19, 2008 PRELIMINARY DATASHEET Electrical Specifications The absolute maximum ratings of SKY77336 are...