sky77178 Skyworks Solutions, Inc., sky77178 Datasheet
sky77178
Manufacturer Part Number
sky77178
Description
Sky77178 Autosmarttm Pa Module For Wcdma / Hsdpa 1850?1910 Mhz
Manufacturer
Skyworks Solutions, Inc.
Datasheet
1.SKY77178.pdf
(2 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SKY77178
Manufacturer:
SKYWORKS/思佳讯
Quantity:
20 000
Company:
Part Number:
sky77178-11
Manufacturer:
JST
Quantity:
978
ADVANCE PRODUCT SUMMARY
SKY77178 AutoSmart™ PA Module for WCDMA / HSDPA
(1850–1910 MHz)
Applications
• WCDMA handsets
• HSDPA handsets
Features
• Low voltage positive bias
• Low VREF
• Low IREF
• Good linearity
• High efficiency
• Large dynamic range
• 8-pad package
• Power down control
• InGaP
• 3GPP
supply
- 3.2 V to 4.2 V
- 2.85 V, nominal
- less than 2 mA
- 3 x 3 x 1.2 mm
Skyworks offers lead
(Pb)-free "environmentally
friendly" packaging
that is RoHS compliant
(European Parliament
for the Restriction of
Hazardous Substances).
200614P1 • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • December 14, 2006
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
The SKY77178 AutoSmart™ Power Amplifier Module (PAM) is a fully matched, 8-pin surface mount
module developed for Wideband Code Division Multiple Access (WCDMA) / High Speed Downlink
Packet Access (HSDPA) applications.
AutoSmart™ power amplifier technology internally adjusts the RF transistor bias level throughout the
dynamic operating range to minimize battery current consumption and ensure sufficient linear
performance to meet WCDMA system requirements. The result is a significant savings in average
battery current without the complications of a system-supplied mode function signal or analog bias
control. AutoSmart™ response time is more than adequate for RF access probe and discontinuous
transmission operation.
This small and efficient module packs full coverage of the 1850–1910 MHz bandwidth into a single
compact package. The device meets the stringent 3GPP linearity requirements up to and exceeding
28 dBm output power. The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit
(MMIC) contains all active circuitry in the module. The MMIC contains on-board bias circuitry, as well
as input and interstage matching circuits. Output match to a 50-ohm load is realized off-chip and
within the module package to optimize efficiency and power performance.
The SKY77178 AutoSmart™ PAM is manufactured with Skyworks’ GaAs Heterojunction Bipolar
Transistor (HBT) process that provides for all positive voltage DC supply operation while maintaining
high efficiency and good linearity. Primary bias to the SKY77178 is supplied directly from a three-cell
Ni-Cd, a single-cell Li-Ion, or other suitable battery with an output in the 3.2 to 4.2 volt range. Power
down is accomplished by setting the voltage on the low current reference pin 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.
RF_IN
VBIAS
VREF
GND
VCC
Stage Bias
Driver
Match
Input
Control Circuit
Figure 1. Functional Block Diagram
Feedback
DA
Inter-Stage
Stage Bias
Match
Power
PA
Output
Match
MODULE
200571_001
RF_OUT
1
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Datasheet:
sky77178 Summary of contents
Page 1
... Transistor (HBT) process that provides for all positive voltage DC supply operation while maintaining • Large dynamic range high efficiency and good linearity. Primary bias to the SKY77178 is supplied directly from a three-cell • 8-pad package Ni-Cd, a single-cell Li-Ion, or other suitable battery with an output in the 3.2 to 4.2 volt range. Power - ...
Page 2
... Copyright © 2006, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products. These materials are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its documentation, products, specifications and product descriptions at any time, without notice ...