SKY77458 Front-End Module for LTE / EUTRAN Band VIII (Tx 880-915 MHz), (Rx 925-960 MHz)

The SKY77458 Front-End Module (FEM) is a fully matched, 16-pad surface mount module developed for LTE/EUTRAN applications. Small and efficient, this LTE FEM integrates the interstage filter, input and output matching, power amplifier, power detection, and duplexer into a single 4 mm x 7 mm x 1.1 mm package. The SKY77458 meets the stringent spectral linearity requirements of LTE with QPSK / 16QAM modulations from 1.4 to 20 MHz bandwidth and full or partial resource block allocations with high power added efficiency. The FEM incorporates Inter-Stage Filter and Duplexer, InGaP BiFET PA, and output power detector. Integration of the RF front-end greatly simplifies the design of the 4G-compatible handset radio or data card as all critical matching between the interstage filter, PA, power detection, and duplexer is optimized within the single module component. By optimizing the efficiency of the InGaP BiFET PA MMIC, reducing RF loss between the integrated components and within the Duplexer itself, and improving the match between the PA and the Duplexer, this FEM achieves low current at maximum output power that significantly reduces the power dissipated in the LTE-enabled handsets or data cards. Primary bias to the SKY77458 is supplied via the VCC1 and VCC2 pads directly from a threecell Ni-Cad, a single-cell Li-Ion, or other suitable battery with output in the 3.0 V to 4.6 V range, while the bias network is powered up with the VCCB pad. DC-DC converter operation can be supported with lower power operation down to 1.5 V. Power down is accomplished by setting a logic low level on the VEN pad. No external supply side switch is needed as typical “off” leakage is 10 μA with full primary voltage supplied from the battery (VBA = 0 V). The VMODE pad is used to switch between high and low power modes to reduce current consumption and gain in the back-off conditions. VBA is used to further control the current consumption in the low power mode.

技术特性

QPSK, 16QAM, 64QAM modulations
Up to 20 MHz bandwidths
• Up to 100 resource blocks
Linear power at 3.3 V
- LTE: 25 dBm
- WCDMA: 26 dBm
Duplexer Tx-Rx attenuation and isolation: > 50 dB
Integrated Power Detector,interstage filter and duplexer
Low voltage positive bias supply:3.0 V to 4.6 V
Supports low collector voltage operation down to 1.5 V
Excellent linearity, efficiency
Large dynamic range
Low Profile 16-pad package:
mm x 7 mm x 1.1 mm
Analog bias current control in low power mode using VBA pad
InGaP BiFET Technology
SKYWORKS Green™ Packaging

订购信息 Ordering Information

SKY77458

应用领域 APPLICATION

Long-Term Evolution (LTE)
Evolved Universal Terrestrial Radio Access Network (EUTRAN)
Handsets and Data Cards

功能框图 Functional Block Diagram

应用技术支持与电子电路设计开发资源下载	版本信息	大小
SKY77458 数据资料DataSheet下载:pdf	Rev.V2	2 页