Analog Devices Inc. EV1HMC574AMS8

Overview

EV1HMC574AMS8 from Analog Devices is a GaAs MMIC SPDT transmit/receive switch in MSOP-8 package, operating from DC to 3 GHz with 0.3 dB typical insertion loss, 30 dB isolation at 1 GHz, +63 dBm input third-order intercept, and 5 W RF power handling capability. It serves as a high-linearity front-end switch in cellular infrastructure and wireless test equipment.

For engineers reviewing the EV1HMC574AMS8 datasheet, EV1HMC574AMS8 pinout, EV1HMC574AMS8 application, or EV1HMC574AMS8 equivalent, key selection criteria include its single +3 to +8 V supply operation, reflective-off RF ports, 40 ns rise/fall time, and requirement for DC blocking capacitors on all RF terminals.

Technical Context

The EV1HMC574AMS8 implements a GaAs-based monolithic SPDT T/R switch with complementary control inputs (A/B) enabling RFC-to-RF1 or RFC-to-RF2 path selection. Its architecture supports reflective-off states (RF1/RF2 present short circuits when de-asserted), eliminating need for external termination resistors.

It operates across DC–3 GHz with bias-dependent linearity: P1dB reaches +37 dBm and IP3 remains +63 dBm at +8 V Vdd. Switching is controlled by TTL/CMOS-compatible logic levels referenced to Vdd, with 70 ns turn-on/off delay and 1 µA control input leakage.

Key Specifications

Pinout & Package

EV1HMC574AMS8 is housed in an RoHS-compliant 8-lead MSOP package (MSL1, matte Sn finish), with exposed paddle thermally connected to ground. Pin 6 and 7 are dedicated RF/DC ground connections; pins 3, 5, and 8 are RF ports requiring DC blocking capacitors.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPDT T/R switch applications.

Compared with HMC646LP4E and QM11036, EV1HMC574AMS8 delivers superior power handling and linearity within DC–3 GHz, making it optimal for infrastructure-grade T/R switching where distortion and reliability under sustained 5 W load are critical.

Availability

EV1HMC574AMS8 is available at Aetrix Electronics and suitable for cellular infrastructure, automotive telematics, and RF test instrumentation requiring stable component supply, long-term lifecycle support, and traceable GaAs MMIC sourcing.

Supply support for EV1HMC574AMS8 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, and aerospace markets with precision signal processing solutions.

The HMC series of GaAs MMIC switches targets high-frequency, high-linearity RF front-ends in wireless infrastructure and defense systems, emphasizing robustness, wide bandwidth, and repeatable GaAs process performance.

FAQ

What is the recommended DC blocking capacitor value for EV1HMC574AMS8 RF ports?

For full DC–3 GHz operation, 100 pF 0402 capacitors are recommended per RF port (RFC, RF1, RF2), as validated on the EV1HMC574AMS8 evaluation board. Lower values extend low-frequency cutoff; larger values risk resonance near 3 GHz. The capacitor must withstand RF voltage swing at maximum input power and maintain impedance match across band.

Does EV1HMC574AMS8 require external termination resistors on RF1 and RF2 when in OFF state?

No. EV1HMC574AMS8 presents a reflective short circuit at RF1 and RF2 when de-asserted, eliminating need for external 50 Ω terminations. This simplifies layout and reduces component count. However, DC blocking capacitors remain mandatory on all three RF ports per datasheet specification.

What is the maximum allowable junction temperature for EV1HMC574AMS8 during continuous operation?

The absolute maximum channel temperature for EV1HMC574AMS8 is 150 °C. With a thermal resistance of 83.9 °C/W and maximum dissipation of 0.775 W at +85 °C ambient, proper PCB grounding and thermal via placement under the exposed paddle are essential to maintain safe junction temperature under 5 W RF load.

Can EV1HMC574AMS8 be driven directly by standard CMOS logic without level-shifting?

Yes. EV1HMC574AMS8 control inputs A and B accept CMOS logic levels referenced to Vdd (e.g., HC-series gates). When Vdd = +5 V, a logic High is defined as Vdd ±0.2 V; no external level shifter is needed if the driving logic shares the same Vdd rail and meets current drive specs (≤1 µA leakage).

How does supply voltage affect linearity performance of EV1HMC574AMS8?

Linearity improves with increasing Vdd: input P1dB rises from +31 dBm at +3 V to +37 dBm at +8 V; IP3 remains constant at +63 dBm across +3 V to +8 V when tested at appropriate tone power. Higher Vdd also increases maximum input power rating from 31 dBm to 39 dBm, enabling full 5 W capability.