SKY77751-12

Dual-Band SkyHi™ Power Amplifier Module for WCDMA/ HSDPA/ HSUPA/ HSPA+/ LTE (Bands I, VIII) CDMA (Band I)

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.

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Specifications

Product LifecycleLast Time Buy

Frequency (MHz)1920-1980, 880-915

DescriptionPAM for CDMA2000/ WCDMA/ HSDPA/ HSUPA, LTE

Typical PAE (%)47

Typical Gain (dB)27

Supply Voltage (V)3.2-4.2

PackageMCM, 16-pad

Package (mm)4 x 3 x 0.9

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

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