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

Features

• High efficiency

• Programmable bias for improved backed-off

efficiency

• High linearity

• Low standby leakage

• Compatible with DC-DC converter

• Programmable Current Clamp

• Autonomous Over-voltage Protection

• Self-shielded

• Small, low profile package

- 3.0 x 3.5 mm x 0.8 mm Max.

- 12-pad configuration

Description

The SKY77365-11 PA module (PAM) is designed for 2G

quad-band cellular handsets supporting fixed gain

Gaussian Minimum-Shift Keying (GMSK) and fixed gain

linear Enhanced Data for GSM Evolution (EDGE)

modulation in the GSM850/900, DCS1800 and

PCS1900 bands. Class12 General Packet Radio Service

(GPRS) multi-slot operation is supported.

The compact 3.0 mm x 3.5 mm x 0.8 mm module

consists of GSM850/900 and DCS1800/PCS1900 PA

blocks, 50-ohm input and output matching circuitry,

and a multi-function power amplifier control (MFC)

block. The custom silicon CMOS MFC provides PA bias

and product identification read-back capability and is

fully programmable through the RF Front-End MIPI.

The heterojunction bipolar transistor (HBT) PA blocks

are fabricated onto a single lnGaP die; one supports

the GSM850/900 bands and the other supports the

DCS1800/PCS1900 bands. Both PA blocks share two

common power supply pads. The InGaP die, silicon die,

and the passive components are mounted on a multilayer

laminate substrate. The entire assembly is

encapsulated with plastic over mold.