HL8438 Broadband DC Block (16 kHz to 95 GHz)


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The HL9438 is an ultra-broadband DC Block with a typical insertion loss of < 2 dB over a bandwidth of 16 kHz to 95 GHz.

The DC block will remove DC bias from the input signal to prevent damage to DC-sensitive devices or equipment.

These devices are suitable for use in 224 Gbps PAM4 communications systems, optical communication systems, high-speed data systems, level shifting, cascading, and interfacing between devices with incompatible DC operating points.

They can also be used to improve RF power measurements when a power meter with DC sensitivities is used.

This part is available as matched pairs or individual units and a variety of connector configurations.

Key Specifications (typical)
Bandwidth 16 kHz to 95 GHz
Capacitance 100 nF ± 20%
Amplitude Match ± 0.1 dB, f ≤ 95 GHz (opt. -M)
Phase Match ± 4 degrees, f = 40 GHz (opt. -M)
Insertion Loss < 2 dB, nominal, 16 kHz ≤ f ≤ 95 GHz
Connectors 1.0 mm
RoHS Compliant Yes
REACH Compliant Yes
Warranty 1 year, repair or replacement

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