General Description

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 communi-

cation protocols. The SC1905 uses the PA output and in-

put signals to adaptively generate an optimized correction

function in order to minimize the PA’s self-generated dis-

tortion and impairments. Using RF-domain analog signal

processing enables the SC1905 to operate over wide-sig-

nal bandwidths and consume very low power.

Design support features are accessed through the

SC1905’s serial peripheral interface (SPI) bus.

Applications

● 4G and 5G Cellular Infrastructure

• Single/Multicarrier, Multistandard: WCDMA, LTE,

and TD-LTE

• BTS Amplifiers, RRH, Booster Amplifiers,

Repeaters, Small Cells, Microcells, Picocells, DAS,

AAS, and MIMO Systems

● Wide Range of PAs and Output Power

• Amplifier: Class A/AB and Doherty

• PA Process: LDMOS, GaN, GaAs, and InGaP

● Any Application Requiring PA Linearization

Benefits and 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

Ordering Information appears at end of data sheet.

Click here for production status of specific part numbers.

SC1905

698MHz to 3800MHz RF Power Amplifier

Linearizer (RFPAL)

EVALUATION KIT AVAILABLE

19-100404; Rev 1; 10/18