Cascaded LMH5401 and LMH6401 reference design


Design files


A wideband single-ended to differential conversion reference design in both DC- and AC- coupled applications is presented. The design evaluates the performance of the LMH5401 and LMH6401 cascade and offers insight into the design.

  • 4.5GHz bandwidth with 30dB maximum total voltage gain
  • Digitally-controlled gain range of 32dB in 1dB steps
  • 50-Ω Input DC- or AC-coupled single-ended to differential conversion
  • Output IP3 at RL = 200Ω:
    • 40dBm at 500MHz
    • 33dBm at 1GHz
  • Output common-mode control capability: VMID ± 0.5V
  • Compact design ideal for portable application with PD = 645mW
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUAK3.PDF (1662 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Design file that contains information on physical board layer of design PCB

TIDRGY2.PDF (1730 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Linear & low-dropout (LDO) regulators

LP5900150-mA, low-noise, low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML

LMH54018-GHz Ultra wideband fully differential amplifier

Data sheet: PDF | HTML

LMH64014.5 GHz ultra wideband digital variable gain amplifier

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Design guide Cascaded LMH5401 and LMH6401 Design Guide Sep. 09, 2015

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