HL9404 Broadband Balun (40 GHz)

Effective 10/15/17, bandwidth (-3 dB) is now extended down to 500 kHz.

The HL9404 is a signal splitter and combiner that offers industry-leading amplitude and phase match from 500 kHz to 40 GHz at -3 dB.

This RoHS-compliant balun is suitable for use in 40 Gbps communications systems, high-speed analog-to-digital conversion, frequency response testing for differential devices, and many other applications..

This is a high-performance version of HYPERLABS' best-selling HL9402 balun and the PCB-mountable HL9403. A 50 GHz version of this product is available as the HL9405 and the new HL9407 offers 67 GHz bandwidth.

Technical Specifications  PDF 

  • Bandwidth (at -3 dB): 500 kHz to 40 GHz
  • Amplitude match: 
    • ± 0.1 dB to 20 GHz
    • ± 0.25 dB 20-40 GHz
  • Phase match: 
    • ± 4-6 degrees at 20 GHz, typical
    • ± 8-12 degrees at 40 GHz, typical
  • Insertion Loss: -6 dB
  • Connectors: 2.92 mm (K); 1x jack input, 2x jack output
  • RoHS compliant, assembled with lead-free solder

NOTE #1: If the DC voltage of the input or output is not zero, matched DC block capacitors are required.

NOTE #2 : To achieve maximum amplitude match to 40 GHz, our baluns are designed to require a pair of highly-accurate (<1 %) 50 ohm terminations.

Product Applications

  • Changing single-ended signals to differential in high-speed analog-to-digital converters
  • Generating differential data from single-ended sources
  • Combining differential signals into single-ended while minimizing harmonic distortion
  • Pulse inversion

Additional Resources

Please note the specific port assignments listed in the S-Parameters file.

Ordering and Shipping

Please see our current lead times for an estimated shipping date. 

Shipping charges will be calculated at time of purchase.

HL9404 Broadband Balun (40 GHz)
HL9404 Broadband Balun (40 GHz)HL9404 Amplitude MatchHL9404 Return Loss (RF In)HL9404 Return Loss (RF Out+)HL9404 Phase MismatchHL9404 VSWRHL9404 CMRREye Diagram (10 Gbps, 7-bit) on HL9404 RF InEye Diagram (10 Gbps, 7-bit) on HL9404 RF Out+Eye Diagram (10 Gbps, 31-bit) on HL9404 RF Out+

Price: $2,295.00  |  Item #: HL9404

How to Buy

You can order through our website using with Visa, Mastercard, or American Express.

You can also request a written quotation.

Questions about this product?

Not sure this product fits your needs? Do you need something a little different? Please contact us and we'll help you figure it out.