Analog Devices Inc. HMC558ALC3BTR

Product Summary HMC558ALC3BTR from Analog Devices Inc.

The Analog Devices HMC558ALC3BTR is a high-performance, double-balanced passive MMIC mixer designed to serve demanding RF and microwave applications. Offering compatibility across a broad 5.5 GHz to 14 GHz frequency range, this device is fabricated using mature GaAs MESFET process technology and presented in a compact, RoHS-compliant 12-lead ceramic leadless chip carrier (CLCC) measuring 2.9 x 2.9 mm. This mixer supports both upconversion and downconversion tasks and is fully optimized for integration into high-volume surface-mount manufacturing, eliminating the need for wire bonding or external matching components. For engineers and sourcing professionals, understanding the distinguishing characteristics of the HMC558ALC3BTR is vital for effective product selection and reliable system performance.

Key Characteristics and Functional Description of the HMC558ALC3BTR

The HMC558ALC3BTR leverages a passive double-balanced mixer architecture. This topology confers high linearity, broad isolation between ports, and robust overall performance. Key technical highlights include:

Conversion loss as low as 7.5 dB (typical) from 5.5 GHz to 10 GHz

Excellent isolation figures: LO to RF and LO to IF isolation both at 45 dB (typical) in primary operating bands

Input third-order intercept (IIP3) up to 21 dBm (typical) between 10 GHz and 14 GHz, indicating exceptional dynamic range

Input P1dB compression of 11.5 dBm (typical) at high-band operation

Wide IF bandwidth from DC up to 6 GHz

RoHS3 compliant, with robust moisture sensitivity handling (MSL 3, 168 hours)

This model’s integration is streamlined by ac-coupled, 50 Ω matched RF and LO ports, and an exposed pad to facilitate efficient thermal grounding. The on-chip balun design inside the HMC558ALC3BTR yields superior LO-to-RF and LO-to-IF isolation versus conventional mixer solutions, permitting more flexible and less shielded RF layouts.

Electrical Specifications and RF Characteristics of the HMC558ALC3BTR

The HMC558ALC3BTR is specified for a local oscillator and RF frequency range of 5.5–14 GHz, with an LO drive level recommendation of 15 dBm. Key application-relevant electrical data points include:

At RF = 5.5–10 GHz:

- Conversion loss: 7.5 to 9.5 dB

- SSB noise figure: 7.5 dB (typical)

- Input IP3: 15 to 17.5 dBm

- Input second-order intercept (IIP2): 50 dB

At RF = 10–14 GHz:

- Conversion loss: 8.5 to 10 dB

- SSB noise figure: 10 dB

- Input IP3: up to 21 dBm

- IIP2: 55 dB

Wide IF bandwidth up to 6 GHz, supporting flexible intermediate frequency planning

Isolation characteristics:

- LO to RF: up to 45 dB at 5.5–10 GHz, 40 dB at 10–14 GHz

- LO to IF: up to 45 dB at 10–14 GHz

The HMC558ALC3BTR demonstrates stable conversion loss, IP3, and isolation performance over temperature from –40°C to +85°C and across the recommended range of LO input powers (9 dBm to 20 dBm). Extensive qualification against ESD (Human Body Model 2500V) and REACH compliance further ensures robust field deployment.

Maximum Ratings and Thermal Management Guidelines for the HMC558ALC3BTR

Reliability and thermal management are critical, especially in power-intensive RF designs. The HMC558ALC3BTR specifies:

Maximum RF, LO, and IF input power: +25 dBm

Maximum IF source/sink current: 3 mA

Maximum junction temperature: 175°C, with operation recommended from –40°C to +85°C ambient

Storage temperature range: –65°C to +150°C

Package thermal resistance, θJC: 180°C/W

To ensure optimal long-term reliability, the device’s exposed pad must be soldered to a low-impedance ground plane, supporting both thermal conductivity and electrical grounding. Design engineers should pay special attention to circuit board layout for effective heat dissipation, especially when operating near the upper bounds of supply power or in high-temperature environments.

Package Details and Pinout Information for the HMC558ALC3BTR

The HMC558ALC3BTR comes in a 12-lead CLCC with an exposed pad for enhanced thermal management. The key pin functions are as follows:

Pins 1, 3, 4, 6, 7, 9: Ground

Pin 2: AC-coupled, 50 Ω matched local oscillator (LO) input

Pin 5: IF port, to be AC-coupled externally as needed

Pin 8: AC-coupled, 50 Ω matched RF input

Pins 10–12: No internal connection, can be grounded

Exposed pad: Should always be connected to thermal and electrical ground

The robust package design maximizes board-level reliability and ESD performance, matching standard industry footprints for streamlined assembly and replacement.

Usage Examples and Application Fields of the HMC558ALC3BTR

The feature set of the HMC558ALC3BTR opens its use across several sectors:

Point-to-point and point-to-multipoint microwave radios

Military communication platforms and radar subsystems

Instrumentation, automatic test equipment (ATE), and broadband sensor technology

High dynamic range up/downconversion in test benches and fielded platforms

A typical engineering use-case would be the integration of the HMC558ALC3BTR into a 10 GHz microwave radio front-end, where stringent requirements on port-to-port isolation, low mixer noise figure, and robust conversion gain are paramount for system performance and regulatory compliance.

Possible Substitute or Alternative Models for the HMC558ALC3BTR

When considering supply continuity or alternative designs, product selection engineers may evaluate other GaAs MMIC mixer models operating within similar frequency bands and offering passive, double-balanced architectures. Key parameters for alternatives include:

Comparable RF and LO operating frequency range (5.5–14 GHz)

Passive, double-balanced topology

Similar or better conversion loss, noise figure, and linearity metrics (IP3, P1dB)

RoHS compliance and matched CLCC SMT package

While direct, drop-in replacements must be confirmed based on the target application’s specific requirements, Analog Devices provides a broad catalog of MMIC mixers suitable for comparative technical evaluation in both new and legacy systems.

Conclusion

: Summary and selection guidelines for the HMC558ALC3BTR

The Analog Devices HMC558ALC3BTR delivers a compelling combination of wideband operation, high isolation, excellent linearity, and robust SMT-compatible packaging. Its integration simplifies the up/downconversion design in RF chains, enabling reliable performance in communications, test and measurement, and defense systems. For engineers and procurement teams, detailed attention to pinout, drive level, and thermal management will unlock the full potential of this MMIC mixer. The HMC558ALC3BTR remains a prime candidate for modern RF designs demanding consistency in high-frequency performance and supply chain continuity.