Multimode Multiband Power Amplifier Module

Skyworks SKY77641 is a multimode multiband (MMMB) Power Amplifier Module (PAM) that supports 3G / 4G handsets and operates efficiently in WCDMA, TD-SCDMA, and LTE modes. The module is fully programmable through a Mobile Industry Processor Interface (MIPI®).

The PAM consists of a WCDMA / LTE block for low, high, and mid-bands, and a Multi-Function Control (MFC) block, RF input/output ports internally matched to 50  to reduce the number of external components. A CMOS integrated circuit uses standard MIPI controls to provide the internal MFC interface and operation. Extremely low leakage current maximizes handset standby time.

The InGaP die and the silicon die and passive components are mounted on a multi-layer laminate substrate. The assembly is encapsulated in a 4.0 mm x 6.8 mm x 0.8 mm, 42-pad MCM, SMT package which allows for a highly manufacturable, low cost solution.

3G: The SKY77641 supports WCDMA, High-Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), High Speed Packet Access (HSPA+), and TD-SCDMA modulations. Varying the input power level provides output power control. VCC is adjusted using a DCDC converter to maximize efficiency for each power level and modulation type.

4G: The SKY77641 supports 1.4, 3, 5, 10, 15, 20 MHz channel bandwidths. Similar to 3G operation, output power is controlled by varying the input power and VCC is adjusted using a DCDC converter to maximize efficiency for each power level.

3G / 4G Modulation scheme includes:

  • WCDMA Voice Release 99
  • HSDPA categories
  • HSPA+
  • LTE 1.4, 3, 5, 10, 15, 20 MHz Channel BW


Product LifecycleIn Production
Frequency (MHz)
DescriptionMMMB PA
TD-SCDMA Bands 34, 39
FDD LTE Bands 1, 2, 3, 4, 5, 7, 8, 9, 12, 13, 17, 20, 28, 30
TDD LTE Bands 38, 39, 40, 41
Typical PAE (%)TBD
Typical Imax (mA)TBD
Typical Gain (dB)TBD
Supply Voltage (V)TBD
PackageMCM, 42-pad
Package (mm)4.0 x 6.8 x 0.8 Max


  • Nine outputs
  • Industry-leading PAE for 3G/4G
  • Optimized for APT DCDC operation
  • Fully programmable Mobile Industry Processor Interface (MIPI) control
  • Dual Low Band RF inputs support separate transceiver outputs or interstage filtering
  • MIPI programmable bias modes optimize best efficiency / linearity trade-off for 3G and 4G; minimizes DG09 for 3G.
  • Small, low profile package: 4.0 x 6.8 x 0.8 mm Max, 42-pad configuration

Product Documents



See all


See all