Analog Devices Inc. 104631-HMC362S8G

Overview

HMC362S8G from Analog Devices is a GaAs HBT MMIC static frequency divider with divide-by-4 functionality, operating from DC (square-wave input) to 12 GHz input frequency using a single +5 V supply. It delivers -6 dBm output power, achieves -149 dBc/Hz SSB phase noise at 100 kHz offset (Pin = 0 dBm, Fin = 6 GHz), and supports prescaler applications in satellite communications and point-to-point radios.

For engineers reviewing the HMC362S8G datasheet, HMC362S8G pinout, HMC362S8G application, or HMC362S8G equivalent, key selection criteria include its DC–12 GHz input bandwidth, differential RF input capability (pins 5 & 7), dual complementary outputs (pins 1 & 3), exposed-pad SOIC_N_EP package thermal performance, and compatibility with +5 V single-supply PLL prescaling architectures.

Technical Context

The HMC362S8G implements a static logic-based divide-by-4 architecture using InGaP GaAs HBT technology, enabling deterministic division without lock time or reference dependency. It accepts either single-ended RF input (pin 5, pin 7 AC-grounded) or differential RF input (pins 5 and 7 driven 180° out-of-phase), with input sensitivity varying by frequency band (-15 to +10 dBm across 1–12 GHz).

Output signals on pins 1 and 3 are complementary (180° phase difference), each delivering -6 dBm typical at 11 GHz input, with 100 ps output transition time (Fout = 882 MHz) and >60 dB reverse isolation when both outputs are terminated. The device operates over -40°C to +85°C with 68 mA supply current at Vcc = 5 V.

Key Specifications

Pinout & Package

Package: 8-Lead Standard Small Outline Package with Exposed Pad (SOIC_N_EP, RD-8-3), narrow body, low-stress injection-molded plastic, Sn/Pb lead finish, MSL1 rating. Exposed pad must be soldered to PCB ground plane for thermal and RF performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar frequency divider applications.

Compared with HMC362S8G, HMC363S8G offers higher division ratio at identical form factor but trades off output power and phase noise; HMC433 provides wider input range and simpler interface but lacks differential outputs and thermal optimization - making HMC362S8G optimal for high-performance, thermally demanding prescaler roles requiring complementary clocks.

Availability

HMC362S8G is available at Aetrix Electronics and suitable for satellite communication transceivers, fiber optic line cards, and point-to-point microwave radios requiring stable component supply, guaranteed MSL1 handling, and traceable lot-controlled sourcing.

Supply support for HMC362S8G 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 semiconductor company specializing in high-performance analog, mixed-signal, and RF technologies for precision signal processing applications.

The HMC362S8G belongs to the Hittite Microwave (acquired by Analog Devices) GaAs HBT MMIC frequency divider product line, designed specifically for broadband, low-phase-noise prescaling in microwave and millimeter-wave communication systems.

FAQ

What input signal types does the HMC362S8G support?

The HMC362S8G supports both square-wave inputs down to DC and sine-wave inputs from 0.2 GHz to 12 GHz. For sine-wave operation, input power must be within specified ranges: -15 to +10 dBm (1–8 GHz), -10 to +3 dBm (8–10 GHz), and -5 to 0 dBm (10–12 GHz). DC blocking is required on the RF input pin (pin 5) for all configurations. The HMC362S8G does not require external biasing or level-shifting circuitry due to its integrated HBT architecture.

Does the HMC362S8G require differential input for optimal performance?

No, the HMC362S8G operates in single-ended mode using only pin 5 as RF input, with pin 7 AC-grounded. However, differential input (pins 5 and 7 driven 180° out-of-phase) improves second-harmonic suppression and common-mode noise rejection. The HMC362S8G's datasheet confirms >60 dB reverse isolation and validated performance in both configurations, making it flexible for legacy single-ended designs and new high-rejection architectures alike.

What is the recommended PCB layout practice for the HMC362S8G's exposed pad?

The exposed pad on the HMC362S8G must be soldered to a solid ground plane using multiple thermal vias (minimum 4×4 array, 0.3 mm diameter) to ensure low thermal resistance and RF grounding. Per the evaluation board (104631), the pad connects directly to the bottom-layer ground plane, and signal traces must maintain 50 Ω impedance. Failure to properly connect the exposed pad results in elevated junction temperature and degraded phase noise performance - the HMC362S8G's thermal resistance drops from >50°C/W (unconnected) to <25°C/W (properly mounted).

Can the HMC362S8G be used in a PLL feedback path?

Yes, the HMC362S8G is commonly deployed in the feedback path of integer-N PLLs to extend VCO frequency range while maintaining loop stability. Its deterministic divide-by-4 ratio, absence of lock time, and low additive phase noise (-149 dBc/Hz) make it ideal for this role. When used in feedback, the HMC362S8G's complementary outputs allow direct connection to phase-frequency detector inputs, and its 100 ps transition time ensures clean edge timing for accurate phase comparison - critical for minimizing spurious content in synthesized outputs.

Is the HMC362S8G RoHS-compliant?

No - the HMC362S8G uses Sn/Pb lead finish and is not RoHS-compliant. Its RoHS-compliant variant is the HMC362S8GE, which features 100% matte tin plating and a peak reflow temperature of 260°C. Both share identical electrical specifications and package dimensions, but the HMC362S8G requires Pb-based solder process control and is designated MSL1 with 235°C max reflow. Customers requiring RoHS compliance must specify HMC362S8GE; the HMC362S8G remains valid for legacy or exempt applications.