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PRODUCT SUMMARY
SKY77336 Power Amplifier Module for Quad-Band GSM / GPRS / EDGE
Applications
* Quad-band cellular handsets * GMSK Modulation - Class 4 GSM850/900 - Class 1 DCS1800/ PCS1900 - Class 12 GPRS multi-slot operation * EDGE modulation - Class E2 GSM850/900 - Class E2 DCS1800/ PCS1900
Description
SKY77336 Power Amplifier Module (PAM) is designed in a compact form factor for quad-band cellular handsets comprising 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 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 InGaP/GaAs, the Heterojunction Bipolar Transistor (HBT) PA blocks support the GSM850/900 bands and DCS1800/PCS1900 bands. Both PA blocks share common power supply pads to distribute current. The InGaP/GaAs die, Silicon (Si) controller die, and passive components 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 load to reduce the number of external components for a quad-band design. Extremely low leakage current (10 A, 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.
Features
* High efficiency: - GSM850, 52% - GSM900, 52% - DCS, 50% - PCS, 50% * Small outline - 5 x 5 mm * Low profile - 0.9 mm, max * Low VRAMP current - 10 A
Figure 1. SKY77336 Functional Block Diagram
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200889C * Skyworks Proprietary and Confidential information. * Products and product information are subject to change without notice. * March 2, 2009
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Ordering Information
Model Number SKY77336 Manufacturing Part Number SKY77336 Product Revision Package 5 x 5 x 0.9 MCM-16 Operating Temperature -20 C to +85 C
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