Datasheet Linear Technology LTM9004-AA

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  UMTS Base Station Receiver Fits in Half-Inch Square &mdash LT Journal
  PDF, 2.4 Mb, File published: Jan 20, 2012
  Extract from the document

  design features UMTS Base Station Receiver Fits in Half-Inch Square
  Douglas Stuetzle and Todd Nelson How much integration is possible while still meeting
  macrocell base station performance requirements? Process
  technology dictates that certain key functions are produced
  in specific processes: GaAs and SiGe in the RF realm,
  fine-line CMOS for high speed ADCs, and high-Q filters
  cannot be implemented well in semiconductor materials.
  Yet the market continues to demand higher integration.
  With that in mind, Linear Technology
  has applied system-in-package (SiP)
  technology to build a receiver occupying about one-half square inch (just over
  3cm2). The boundaries of the receiver
  are the 50О© RF input, the 50О© LO input,
  the ADC clock input and the digital
  ADC output. This leaves the low noise
  amplifier (LNA) and RF filtering to be
  added for the input, LO and clock generation, and digital processing of the digital
  output. Within the 15mm Г— 22mm package is a signal chain utilizing SiGe high frequency components, discrete passive filtering and fine-line CMOS ADCs.
  This article presents a design analysis for
  the LTM9004 ВµModuleВ® receiver implementing a direct conversion receiver.
  DESIGN TARGETS The design target is a Universal Mobile
  Telecommunications System (UMTS)
  uplink Frequency Division Duplex …

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Manufacturer's Classification

• Data Conversion > Signal Chain µModule Receivers
• Data Conversion > Analog-to-Digital Converters (ADC) > High Speed ADCs (Fs >=10Msps)