Analog Devices Inc. 110782-HMC546LP2

Overview

110782-HMC546LP2 from Analog Devices is a GaAs-based failsafe SPDT RF switch designed for high-power transmit/receive path selection and LNA protection in infrastructure and mobile radio systems. It operates from 0.2 GHz to 2.7 GHz, delivers 40 dBm P0.1dB on Tx, exhibits 0.4 dB typical insertion loss (Tx→RFC), and maintains failsafe operation-defaulting to Tx path when VDD/VCTL are unpowered. It is used in WiMAX repeaters and automotive telematics front-ends requiring robust 10 W CW handling.

For engineers reviewing the 110782-HMC546LP2 datasheet, 110782-HMC546LP2 pinout, 110782-HMC546LP2 application, or 110782-HMC546LP2 equivalent, this evaluation board enables rapid validation of HMC546LP2E switch performance at 1843 MHz with pre-tuned matching components, supporting design-in of high-linearity RF front-ends in cellular, PMR, and telematics platforms.

Technical Context

The 110782-HMC546LP2 is an evaluation board configured specifically for the HMC546LP2E GaAs SPDT switch at 1843 MHz, implementing external matching per Table 5 (C1/C3/C5 = 330 pF, C2 = 1.2 pF, C7 = 3.0 pF, L1 = 5.1 nH, L2 = 4.3 nH). It uses Rogers 4350 substrate and SMA connectors (J1–J3) for 50 Ω RF paths, with dedicated DC pins (J4–J6) for VDD and VCTL control.

Unlike the bare HMC546LP2E IC-which requires full external biasing, AC grounding (via ACG capacitor), and impedance matching-the 110782-HMC546LP2 integrates all passive components needed for 1843 MHz operation, enabling direct RF performance measurement without custom layout. Its exposed paddle ground connection follows CP-6-10 LFCSP mechanical requirements.

Key Specifications

Availability

110782-HMC546LP2 is available at Aetrix Electronics and suitable for WiMAX repeater development, private mobile radio (PMR) transceiver prototyping, and automotive telematics RF front-end validation requiring stable component supply and pre-characterized 1843 MHz switching performance.

Supply support for 110782-HMC546LP2 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 precision instrumentation, communications, and industrial markets since 1965.

The 110782-HMC546LP2 belongs to Analog Devices' RF Switch Evaluation Board product line, engineered to accelerate design-in of high-power GaAs switches like the HMC546LP2E in infrastructure and mobile radio applications where linearity, power handling, and failsafe reliability are critical.

FAQ

What is the purpose of the 110782-HMC546LP2 evaluation board?

The 110782-HMC546LP2 evaluation board is a fully assembled PCB designed to validate the RF performance of the HMC546LP2E GaAs SPDT switch at 1843 MHz. It includes all required external matching components (capacitors and inductors per datasheet Table 5), SMA RF connectors, and DC interface pins-enabling immediate measurement of insertion loss, isolation, and linearity without custom layout. The 110782-HMC546LP2 supports rapid prototyping of LNA protection and T/R switching circuits in licensed band infrastructure.

Does the 110782-HMC546LP2 include the HMC546LP2E IC?

Yes, the 110782-HMC546LP2 evaluation board includes one mounted HMC546LP2E IC in its 6-lead LFCSP package (CP-6-10). The IC is soldered onto the Rogers 4350 substrate and connected to the pre-tuned matching network, SMA ports (J1–J3), and DC pins (J4–J6) as shown in Figure 25 and Figure 26 of the HMC546LP2E Rev. E datasheet. The 110782-HMC546LP2 is shipped ready for RF testing.

Can the 110782-HMC546LP2 be used at frequencies other than 1843 MHz?

No-the 110782-HMC546LP2 is optimized exclusively for 1843 MHz operation using fixed component values (C2 = 1.2 pF, C7 = 3.0 pF, L1 = 5.1 nH, L2 = 4.3 nH). Performance degrades significantly outside ±50 MHz due to mismatch-induced loss and reduced isolation. For 2015 MHz, 2350 MHz, or 2600 MHz evaluation, Analog Devices specifies separate boards: 115201-HMC546LP2, 115202-HMC546LP2, and 115203-HMC546LP2. The 110782-HMC546LP2 does not support re-tuning.

What power supply requirements does the 110782-HMC546LP2 have?

The 110782-HMC546LP2 requires two independent DC supplies: VDD (3 V to 8 V, absolute max 10 V) applied to pin J4, and VCTL (0 V or VDD-level, ±0.2 V tolerance) applied to pin J5. Pin J6 connects to ACG and must be decoupled to ground via an external capacitor (not included on board-user must add). The 110782-HMC546LP2 draws no quiescent current when VDD = 0 V due to failsafe topology, but full operation requires proper bias per the HMC546LP2E truth table.

Is thermal management required when using the 110782-HMC546LP2?

Yes-when operating the 110782-HMC546LP2 with high RF input power (up to 40 dBm on Tx), thermal management is essential. The HMC546LP2E's θ_JC is 54°C/W for the Tx path; the evaluation board's exposed paddle must be soldered to a large copper ground plane to dissipate heat. Without adequate PCB copper area and thermal vias under the EPAD, junction temperature may exceed 150°C, risking reliability degradation. The 110782-HMC546LP2 relies on user-provided heatsinking for sustained 10 W operation.