Analog Devices Inc. EV1HMC644ALC5

Overview

EV1HMC644ALC5 from Analog Devices is a GaAs MMIC 5-bit digital phase shifter operating from 15 to 18.5 GHz, delivering 360° phase coverage with 11.25° LSB resolution, 3.5° RMS phase error, ±0.5 dB insertion loss variation, and 50 Ω internal RF matching-used in phased-array radar beamforming modules requiring precise high-frequency phase control.

For engineers reviewing the EV1HMC644ALC5 datasheet, EV1HMC644ALC5 pinout, EV1HMC644ALC5 application, or EV1HMC644ALC5 equivalent, key selection criteria include frequency band alignment (15–18.5 GHz), complementary logic control (0/−3 V), RMS phase accuracy (<4°), insertion loss stability (±0.5 dB), and ceramic SMT package thermal performance for EW and satellite comms systems.

Technical Context

The EV1HMC644ALC5 implements a monolithic GaAs-based switched-line architecture with five independent bit-controlled phase paths, each configured via non-inverted and inverted complementary inputs (BIT1–BIT5). Its DC-coupled 50 Ω RFIN/RFOUT ports eliminate external biasing components.

Control interface requires dual-rail −3 V/0 V logic with sub-1 mA input current per bit; no fixed bias supply is needed. Phase states are monotonic and fully specified across temperature (−40°C to +85°C) and frequency, with RMS phase error maintained at ≤3.5° over all 32 states.

Key Specifications

Pinout & Package

EV1HMC644ALC5 is housed in a 32-lead ceramic leadless surface-mount package (5 mm × 5 mm, alumina body, gold-over-nickel plating, MSL3), with exposed ground paddle requiring solder connection to PCB RF ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital phase shifter applications.

Compared with EV1HMC644ALC5, HMC644ALC4 trades thermal margin for smaller footprint, while QM11020 extends bandwidth and resolution at the cost of increased external component count and non-compatible control interface-neither is pin-compatible, and both require layout and firmware adaptation.

Availability

EV1HMC644ALC5 is available at Aetrix Electronics and suitable for EW receivers, weather/military radar systems, and satellite communications equipment requiring stable component supply, high-frequency precision, and MIL-qualified thermal reliability.

Supply support for EV1HMC644ALC5 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 defense, aerospace, communications, and industrial markets with precision signal processing solutions.

The HMC644ALC5 belongs to Analog Devices' Hittite Microwave legacy GaAs MMIC phase shifter product line, engineered specifically for Ka-band phased-array radar and secure SATCOM beam agility where phase accuracy, repeatability, and rugged packaging are mission-critical.

FAQ

What is the recommended control interface for EV1HMC644ALC5?

The EV1HMC644ALC5 requires complementary 0 V / −3 V logic signals applied simultaneously to non-inverted and inverted BIT1–BIT5 inputs. Each bit draws <1 mA, and no external bias is needed. Level-shifting circuits can convert standard CMOS 0/+3.3 V signals to the required negative rail format-details are provided in the application circuit diagram of the EV1HMC644ALC5 datasheet.

Does EV1HMC644ALC5 require external matching components?

No, EV1HMC644ALC5 is internally matched to 50 Ω on both RFIN and RFOUT ports across 15–18.5 GHz, eliminating the need for external DC blocks, baluns, or matching networks. The device is DC-coupled, allowing baseband-compatible signal routing in transceiver architectures without additional RF chokes or capacitors.

What is the thermal management requirement for EV1HMC644ALC5?

EV1HMC644ALC5 features an exposed ground paddle that must be soldered to a thermally robust PCB ground plane using multiple vias. Its channel-to-paddle thermal resistance is 150 °C/W; for continuous operation at +85 °C ambient, ensure ≥2 cm² of copper area under the paddle and consider heatsinking in high-power radar applications.

Is EV1HMC644ALC5 suitable for space-constrained phased-array designs?

Yes, EV1HMC644ALC5 uses a compact 5 mm × 5 mm ceramic SMT package with 32 leads and an exposed paddle-optimized for high-density RF module integration. Its small footprint, combined with internal 50 Ω matching and monotonic phase response, makes it ideal for tile-based active antenna arrays where board area and calibration predictability are critical.

How does EV1HMC644ALC5 perform across temperature and frequency?

EV1HMC644ALC5 maintains ≤3.5° RMS phase error and ±0.5 dB insertion loss variation across −40°C to +85°C and 15–18.5 GHz. Measured data shows stable phase shift accuracy and return loss (>10 dB input, >12 dB output) across all 32 states, with no degradation in monotonicity or linearity-validated in production testing per MIL-STD-883 methods.