698MHz to 3800MHz RF Power Amplifier Linearizer (RFPAL)

5MHz to 100MHz Signal Bandwidth PA Linearizer for 4G and 5G Cellular Infrastructure

Please check latest availability status for a specific part variant.


The SC1905 is a pin-compatible upgrade of the popular SC1894 RF PA linearizer (RFPAL) supporting signal bandwidths up to 100MHz. The SC1905 is a fully adaptive, RFin/RFout predistortion linearization solution optimized for a wide range of amplifiers, power levels, and communication protocols. The SC1905 uses the PA output and input signals to adaptively generate an optimized correction function in order to minimize the PA’s self-generated distortion and impairments. Using RF-domain analog signal processing enables the SC1905 to operate over wide-signal bandwidths and consume very low power.

Design support features are accessed through the SC1905’s serial peripheral interface (SPI) bus.

SC1905: Typical Application Circuits SC1905: Typical Application Circuits Enlarge+

Key Features

  • RFin/RFout PA Linearizer SoC in Standard CMOS
    • Fully Adaptive Correction
  • External Reference Clock Support:
    • 10MHz, 13MHz, 15.36MHz, 19.2MHz, 20MHz, 26MHz, and 30.72MHz
  • Low Power Consumption: 1280mW
  • Frequency Range: 698MHz to 3800MHz
  • Input Signal Bandwidth: 5MHz to 100MHz
  • Packaged in 9mm x 9mm QFN Package
  • Operating Case Temperature: -40°C to +105°C
  • Fully RoHS Compliant, Green Materials
  • Ease of Use
    • Integrated RFin/RFout Solution
    • Reduced SW Development
  • Reduces System Power Consumption and OPEX
  • Reduces BOM Costs, Area, and Total Volume
    • Smaller Power Supply, Heat Sink, and Enclosure
    • Small Implementation Size (< 6.5cm2)


  • 4G and 5G Cellular Infrastructure
  • Amplifier: Class A/AB and Doherty
  • Any Application Requiring PA Linearization
  • BTS Amplifiers, RRH, Booster Amplifiers, Repeaters, Small Cells, Microcells, Picocells, DAS, AAS, and MIMO Systems
  • PA Process: LDMOS, GaN, GaAs, and InGaP
  • Single/Multicarrier, Multistandard: WCDMA, LTE, and TD-LTE
  • Wide Range of PAs and Output Power
Part NumberFrequency Range
Input Signal Bandwidth
Input Signal Bandwidth
PA ArchitectureFootprint
(mm x mm)
Package/PinsOper. Temp.
minmaxSee Notes
SC1905 698 to 38005100
Class AB
Closed Loop
Open Loop
9.0 x 9.0
-40 to +105$65.93 @1k
See All RF Predistortion ICs (5)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

SC1905-EVK1900: Evaluation Kit for the SC1905
SC1905-EVK2400: Evaluation Kit for the SC1905
SC1905-EVK3400: Evaluation Kit for the SC1905
SC-USB-SPI-PICO: USB-to-SPI Interface Adapter for SC1905 and SC1894

Technical Documents

User Guide 6853 SC1905 Release Notes
User Guide 6838 SC1905 Hardware Design Guide
User Guide 6837 RFPAL Advanced GUI Installation Guide
User Guide 6831 SC1905 SPI Programming Guide
App Note 6323 Optimizing your Power Amplifier for Predistortion with RF PA Linearizer (RFPAL)
App Note 6320 Linearizing Microwave Transmission Power Amplifiers Using the SC1894

Quality and Environmental Data

Request Reliability Report for: SC1905 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Power Amplifier Results

Hardware Package
SC1905 Hardware Package

Tools & Models

  • SC1905 Gerber File
  • CAD Symbols and Footprints

  • SC1905A-00A00
  • SC1905A-00A00E
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >


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