Analog Devices Inc. HMC175MS8E

Overview

HMC175MS8E from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC double-balanced mixer in MSOP-8 package, operating from 1.7–4.5 GHz RF/LO and DC–1.0 GHz IF. It delivers 8 dB typical conversion loss, +18 dBm input IP3, and 30–32 dB LO-to-RF/IF isolation. It serves as upconverter/downconverter or biphase modulator/demodulator in compact wireless transceivers.

For engineers reviewing the HMC175MS8E datasheet, HMC175MS8E pinout, HMC175MS8E application, or HMC175MS8E equivalent, key selection criteria include broadband RF/LO frequency coverage, ultra-small MSOP-8 footprint, high linearity (+18 dBm IIP3), thermal stability across –40°C to +85°C, and RoHS-compliant matte tin lead finish.

Technical Context

The HMC175MS8E is a passive, doubly balanced diode-ring mixer implemented in GaAs MMIC technology. Its architecture provides inherent suppression of LO feedthrough and even-order harmonics, enabling clean IF output with minimal filtering. It requires +13 dBm LO drive for optimal performance and operates without DC bias.

Designed for surface-mount integration, the device uses all-grounded package leads (except RF, LO, IF) and mandates direct soldering of ground leads and exposed paddle to PCB RF ground. Its 0.118″ × 0.190″ × 0.040″ MSOP-8 footprint supports miniaturized RF front-ends where board space and intermodulation rejection are critical.

Key Specifications

Pinout & Package

Package: RoHS-compliant MSOP-8 (0.118″ × 0.190″ × 0.040″), low-stress molded plastic with 100% matte Sn lead finish, MSL1 rated (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar double-balanced mixer applications.

Compared with HMC175MS8 (leaded variant) and ADL5801ACPZ-R7 (active broadband mixer), the HMC175MS8E offers the optimal balance of ultra-compact size, passive simplicity, and proven 1.7–4.5 GHz performance for cost-sensitive, space-constrained wireless infrastructure-without DC power or thermal management overhead.

Availability

HMC175MS8E is available at Aetrix Electronics and suitable for mini-base stations, portable wireless terminals, and PCMCIA wireless cards requiring stable component supply, RoHS compliance, and guaranteed long-term availability for industrial deployments.

Supply support for HMC175MS8E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and RF ICs, serving communications, industrial, automotive, and aerospace markets since 1965.

The HMC175MS8E belongs to Analog Devices' legacy Hittite Microwave RF mixer product line, engineered specifically for miniaturized, high-isolation, broadband wireless infrastructure where passive performance and SMT scalability are critical.

FAQ

What is the recommended LO drive level for optimal performance of the HMC175MS8E?

The HMC175MS8E is characterized and optimized for +13 dBm LO drive. At this level, it achieves 8 dB typical conversion loss, 30 dB LO-to-RF isolation, and +18 dBm input IP3. Deviating below +11 dBm increases conversion loss; exceeding +15 dBm yields diminishing returns and risks compression. The HMC175MS8E does not require DC bias, making LO drive level the primary operational control parameter.

Does the HMC175MS8E require external baluns for RF, LO, or IF ports?

Yes-the HMC175MS8E has fully differential RF, LO, and IF ports. To interface with single-ended 50 Ω systems, external baluns are required on all three ports. The evaluation board (PCB 101650) uses SMA connectors with integrated baluns. Without proper balancing, common-mode rejection degrades, reducing isolation and increasing spurious outputs. The HMC175MS8E's performance specifications assume ideal differential drive and termination.

What is the absolute maximum RF/IF input power rating for the HMC175MS8E?

The absolute maximum RF/IF input power for the HMC175MS8E is +13 dBm. Exceeding this level risks permanent damage to the GaAs diode ring, especially under mismatched conditions. This limit applies regardless of signal modulation or duty cycle. For reliable operation, design RF/IF input levels ≤ +10 dBm, particularly in high-reliability applications such as mini-base stations where the HMC175MS8E is commonly deployed.

How does the HMC175MS8E differ from the HMC175MS8 in terms of manufacturability?

The HMC175MS8E uses 100% matte Sn lead finish and is rated for 260°C peak reflow (MSL1), making it compatible with modern lead-free assembly processes. In contrast, the HMC175MS8 uses Sn/Pb solder finish and is rated for 235°C peak reflow. Both share identical die, pinout, and electrical specs-but only the HMC175MS8E meets RoHS Directive 2011/65/EU and IPC-J-STD-020D.2 requirements for new production.

Can the HMC175MS8E be used as a phase modulator or demodulator?

Yes-the HMC175MS8E's double-balanced architecture supports biphase (0°/180°) modulation and demodulation when the LO port is driven with a digital square wave and the RF or IF port serves as the data input. Its high LO-to-RF/IF isolation (>30 dB) and broadband response (1.7–4.5 GHz) make it suitable for QPSK and OQPSK implementations in portable wireless terminals where the HMC175MS8E replaces discrete transformer-based modulators.