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SKY77765

SkyHi™ Power Amplifier Module for CDMA /WCDMA / HSDPA / HSUPA / HSPA+ / LTE –Band V (815–849 MHz)

Skyworks Solutions 

PRODUCT SUMMARY

SKY77765 SkyHi™ Power Amplifier Module for CDMA /

WCDMA / HSDPA / HSUPA / HSPA+ / LTE –

Band V (815–849 MHz)

Applications

• WCDMA handsets

• HSDPA

• HSUPA

• HSPA+

• LTE

• CDMA2000

• EVDO

Features

• Low voltage positive bias

supply 3.2 V to 4.2 V

• Good linearity

• High efficiency

- 50% at 28.25 dBm

• Large dynamic range

• Small, low profile package

- 3 mm x 3 mm x 0.9 mm

- 10-pad configuration

• Power down control

• InGaP

• Supports low collector

voltage operation

• Digital Enable

• No VREF required

• CMOS compatible control

signals

• Integrated Directional

Coupler

Description

The SKY77765 SkyHi™ Power Amplifier Module (PAM) is a fully matched 10-pad surface mount

module developed for Wideband Code Division Multiple Access (WCDMA) applications. This small and

efficient module packs full 815-849 MHz bandwidth coverage into a single compact package.

Because of high efficiencies attained throughout the entire power range, the SKY77765 delivers

unsurpassed talk-time advantages. The SKY77765 meets the stringent spectral linearity requirements

of High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), and Long

Term Evolution (LTE) data transmission with high power added efficiency. An integrated directional

coupler eliminates the need for any external coupler.

The Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all amplifier

active circuitry, including input and interstage matching circuits. The silicon CMOS support die,

providing precision biasing for the MMIC affords a true CMOS-compatible control interface. Output

match into a 50-ohm load, realized off-chip within the module package, optimizes efficiency and

power performance.

The SKY77765 is manufactured with Skyworks' InGaP GaAs Heterojunction Bipolar Transistor (HBT)

process which provides for all positive voltage DC supply operation and maintains high efficiency and

good linearity. While primary bias to the SKY77765 can be supplied directly from any suitable battery

with an output of 3.2 V to 4.2 V, optimal performance is obtained with VCC2 sourced from a DC-DC

power supply adjusted within 0.5 V to 3.4 V based on target output power levels. Power down

executes by setting VENABLE to zero volts. No external supply side switch is needed as typical "off"

leakage is a few microamperes with full primary voltage supplied from the battery.

Figure 1. SKY77765 Functional Block Diagram

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

201776B • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • August 29, 2013

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