SKY77751-12 Datasheet, PDF (1/2 Pages) Skyworks Solutions Inc. – Low voltage positive bias supply

PRODUCT SUMMARY
SKY77751-12 Dual-Band SkyHi™ Power Amplifier Module for
WCDMA/ HSDPA/ HSUPA/ HSPA+/ LTE (Bands I, VIII)
CDMA (Band I)
APPLICATIONS
• WCDMA handsets
• HSDPA
• HSUPA
• CDMA2000
• EVDO
• LTE
Features
• Low voltage positive bias
supply: VBATT 3.0 V to 4.5 V
• Good linearity
• High efficiency
- Bands I and VIII:
44% at maximum power
output
• Large dynamic range
• Small, low profile package
- 3 mm x 4 mm x 0.9 mm
- 16-pad configuration
• Power down control
• InGaP
• Supports low collector
voltage VCC operation
• Digital Enable
• No VREF required
• CMOS compatible control
signals
• Integrated Directional
Coupler
The SKY77751-12 SkyHi™ Power Amplifier Module (PAM) is a fully matched, 16-pad, surface mount
module developed for Wideband Code Division Multiple Access (WCDMA), Code Division Multiple
Access (CDMA), and Long Term Evolution (LTE) applications. This small and efficient module packs
full coverage WCDMA Bands I and VIII into a single compact package. The SKY77751-12 meets
stringent spectral linearity requirements for WCDMA transmission up to maximum power output. The
PAM also meets stringent spectral linearity requirements for WCDMA, HSDPA, HSUPA, HSPA, and
CDMA2000 data transmission with high power-added efficiency. A directional coupler is integrated
into the module thus eliminating the need for any external coupler.
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 into a 50-ohm load is realized off-chip within the module package to
optimize efficiency and power performance.
The SKY77751-12 PAM is manufactured with Skyworks’ InGaP GaAs Heterojunction Bipolar Transistor
(HBT) process that provides for all positive voltage DC supply operation while maintaining high
efficiency and good linearity. No VREF voltage is required. Power down is accomplished by setting the
voltage on VENHB and VENLB 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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
201822B • Skyworks Proprietary and Confidential information. • Products and product information are subject to change without notice. • July 11, 2012
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