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SKY77528 Datasheet Front-End Module

Manufacturer: Skyworks Solutions

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General Description

The SKY77528 is a transmit Front-End Module (FEM) designed for quad-band Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS), and Enhanced Data Rate for GSM Evolution (EDGE) handsets and modules.

The SKY77528 consists of a GSM850/EGSM900 PA block and a DCS1800/PCS1900 PA block, impedance-matching circuitry for 50 Ω inputs and outputs, a multi-function PA control block, lowpass harmonic rejection filter, and a transmit/receive antenna switch.

Two Heterojunction Bipolar Transistor (HBT) PA blocks are fabricated onto an Indium Gallium Phosphide (InGaP) die;

Overview

PRODUCT SUMMARY SKY77528 Tx Front-End Module for Quad-Band GSM / EDGE www.datasheet4u.

Key Features

  • High efficiency: - GSM850, 45% (peak) - EGSM900, 45% (peak) - DCS1800, 40% (peak) - PCS1900, 40% (peak).
  • Low-loss PHEMT RF antenna switch.
  • Detector output: linear dB/V.
  • Closed loop GMSK mode power control.
  • Low VRAMP current.
  • Low VBATT detection.
  • Integrated temperature sensor.
  • Small Package - 8 mm x 6 mm.
  • Low Profile - 1.1 mm Max. Figure 1. SKY77528 Functional Block Diagram Skyworks Solutions, Inc.
  • Phone.

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