HMC1044LP3E

Overview

The HMC1044LP3E is a programmable bandwidth active low-pass filter designed for wideband transceiver harmonic filtering. It features 16 user-selectable bands covering a cutoff frequency range from approximately 1 GHz to 3 GHz. The device supports both single-ended and differential configurations, with input/output impedances of 50 Ω and 100 Ω respectively. Key electrical specifications include a maximum passband insertion loss of 5 dB, a minimum return loss of 10 dB, and an in-band input IP3 of 43 dBm. It operates on a DC supply voltage between 3 V and 3.5 V with a typical current consumption of 1 µA.

Feature Summary

• Programmable bandwidth selection via serial interface to optimize LO harmonic rejection
• Compact 16-lead 3x3 mm QFN surface-mount package
• Supports both single-ended and differential signal paths

Applications

• Filtering LO harmonics to reduce modulator sideband rejection degradation
• Filtering LO harmonics to improve demodulator image rejection performance
• Amplifier harmonic filtering for RF signal chains

Procurement Notes

Verify component authenticity through authorized Analog Devices channels. Confirm the specific lot number and manufacturing date code against the datasheet revision history. Ensure proper ESD handling procedures are followed during storage and assembly due to the sensitivity of the internal circuitry.

Selection Notes

Select the appropriate band setting based on the target LO fundamental frequency to ensure optimal attenuation of the second and third harmonics. Consider the impact of external DC blocking capacitors on low-frequency performance limits. Evaluate whether single-ended or differential topology best fits the system impedance requirements.

Part Context

This component belongs to the HMC1044 family of programmable harmonic filters manufactured by Analog Devices Inc. It serves as a specialized solution for managing local oscillator harmonics in complex radio frequency integrated circuits (RFICs) and wideband PLL systems.

Replacement Considerations

Public confirmed substitute part numbers: None identified.