HL8447 Broadband Bias Tee w/ Sense Port (50 kHz to 67 GHz, 175 mA)


Datasheet PDF S-parameters

The HL8447 is an ultra-broadband bias tee including a sense port, with a maximum insertion loss of 1.75 dB from 35 kHz to 67 GHz.

These devices block any existing DC signal and allows for the insertion of a DC bias current into a circuit with minimal perturbation of the impedance of a 50 ohm transmission line.

These devices can be used for biasing amplifiers, lasers, optical modulators, and other devices.

Applications include 112 Gbps PAM4 communications systems, optical communication systems, high-speed data systems, level shifting, cascading, and interfacing between devices with incompatible DC operating points.

This part is available as matched pairs or individual units with breakdown voltage of 11 V or 30 V and a variety of connector configurations.

Key Specifications (typical)
Bandwidth 50 kHz to 67 GHz (opt. -11)
85 kHz to 67 GHz (opt. -30)
Amplitude Match ± 0.2 dB, f ≤ 67 GHz (opt. -M)
Phase Match ± 4 degrees, f = 40 GHz (opt. -M)
Insertion Loss < 1.75 dB, nominal, f ≤ 67 GHz
Return Loss > 15 dB, f ≤ 35 GHz
> 10 dB, 35 GHz < f ≤ 67 GHz
Max Current 175 mA
Connectors 1.85 mm
RoHS Compliant Yes
REACH Compliant Yes
Warranty 1 year, repair or replacement

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