HL8808_web

HL8808 Broadband Balun (500 kHz to 145 GHz, -12 dB)

Datasheet (Pre-Production)

COMING SOON: This product will be available for sale in Q2 2026

The HL8808 is an ultra-broadband 180° signal splitter and combiner that offers excellent amplitude and phase match over an industry-best bandwidth of 500 kHz to 115 GHz (3 dB), with usable bandwidth to 145 GHz (12 dB).

This ROHS-compliant product is suitable for use in 224 Gbps PAM4 communications systems, high-speed analog-to-digital conversion, frequency response testing for differential devices, and many other applications.

For other high-performance balun products, please see our complete line of ultra-broadband baluns.

Key Specifications (typical)

Bandwidth	500 kHz to 115 GHz (3 dB) 115 GHz to 145 GHz (12 dB)
Amplitude Match	± 0.5 dB, f ≤ 70 GHz ± 1.5 dB, f > 95 GHz
Phase Match	15°, f = 120 GHz
Insertion Loss	6 dB nominal
Connectors	0.8 mm; 1x jack input, 2x jack output
RoHS Compliant	Yes
REACH Compliant	Yes
Warranty	1 year, repair or replacement

NOTE #1: If the DC voltage of the balanced or unbalanced ports is non-zero, DC blocks are required. The balanced ports (2 and 3) are DC shorted.

NOTE #2: When the device is used as a signal combiner using differential signals with unmatched source impedance, attenuators (3-6 dB) may be required to improve isolation.