ZKL-33ULN-S+

Overview

The ZKL-33ULN-S+ is a connectorized low-noise linear RF amplifier manufactured by Mini-Circuits. It operates within a frequency range of 400 MHz to 3 GHz with a nominal gain of 35 dB and an impedance of 50 ohms. Key electrical specifications include a typical noise figure of 0.36 dB, a P1dB output power of 18 dBm, and a third-order intercept point (IP3) of 37 dBm. The device requires a 5 VDC supply current of 100 mA and utilizes SMA connectors for interfacing.

Feature Summary

• Low noise figure performance suitable for sensitive receiver front-ends
• Linear amplification characteristics with high IP3 for signal integrity
• SMA connectorized housing for direct integration into RF systems

Applications

• GPS receiver front-ends
• GSM communication systems
• LTE infrastructure components
• Radar system receivers

Procurement Notes

Verify the specific datasheet revision and manufacturing date code upon order confirmation. Confirm that the SMA connector polarity and pinout match the receiving PCB footprint requirements. Ensure the 5V DC supply voltage tolerance aligns with the component's operational limits to prevent damage or performance degradation during deployment.

Selection Notes

Select this component when a low noise figure below 1 dB is required alongside moderate output power capabilities in the UHF to S-band spectrum. The fixed 35 dB gain makes it suitable for intermediate stages where signal boosting is necessary without excessive saturation. Verify thermal management needs as the device dissipates power based on the 100 mA supply current at 5V.

Part Context

This model belongs to Mini-Circuits' ZKL series of connectorized low-noise amplifiers. The 'ULN' designation typically indicates ultra-low noise characteristics, while the suffix '+ denotes compliance with RoHS standards. These units are designed for robust performance in commercial and industrial RF applications requiring reliable signal amplification.

Replacement Considerations

Consult official Mini-Circuits substitution guides for verified equivalents. Cross-reference parameters such as noise figure, gain flatness, and physical dimensions before substituting with other LNA models from different manufacturers.