Analog Devices Inc. 115201-HMC546LP2

Overview

115201-HMC546LP2 from Analog Devices is a failsafe GaAs SPDT RF switch designed for T/R path selection and LNA protection in 200–2700 MHz infrastructure transceivers. It delivers 40 dBm P0.1dB on Tx, 0.4 dB typical insertion loss (Tx→RFC), 67 dBm IIP3, failsafe operation (RFC→Tx path active at VCTL = 0 V), and supports 3–8 V positive control logic.

For engineers reviewing the 115201-HMC546LP2 datasheet, 115201-HMC546LP2 pinout, 115201-HMC546LP2 application, or 115201-HMC546LP2 equivalent, this evaluation board is tuned to 2015 MHz for PCS/3G base station repeaters, private mobile radio handsets, and automotive telematics systems requiring high-linearity, high-power RF switching with fail-safe reliability.

Technical Context

The 115201-HMC546LP2 is an evaluation board implementing the HMC546LP2E IC in a 2 mm × 2 mm LFCSP package, pre-tuned for 2010–2025 MHz operation. It uses discrete matching components-0402 inductors (L1 = 4.3 nH, L2 = 3.9 nH) and capacitors (C1/C3/C5 = 330 pF, C2 = 0.8 pF, C7 = 2.4 pF)-to optimize Tx→RFC insertion loss (0.4 dB typ) and RFC→Rx isolation (20–27 dB).

This board enables rapid validation of the HMC546LP2E's failsafe behavior under zero-control conditions and its high-power handling (10 W CW) in narrowband 2015 MHz systems. The PCB features SMA RF connectors (J1–J3), DC pins (J4–J6), Rogers 4350 substrate, and direct-exposed-pad grounding per datasheet layout guidelines.

Key Specifications

Availability

115201-HMC546LP2 is available at Aetrix Electronics and suitable for 2015 MHz PCS/3G repeaters, private mobile radio (PMR) handsets, and automotive telematics systems requiring stable component supply and validated RF switching performance.

Supply support for 115201-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 communications, industrial, and automotive markets since 1965.

The HMC546LP2E product line targets high-power, high-linearity RF front-end switching for wireless infrastructure and mission-critical portable radios, emphasizing failsafe operation and narrowband optimization.

FAQ

What is the primary function of the 115201-HMC546LP2 evaluation board?

The 115201-HMC546LP2 evaluation board implements the HMC546LP2E GaAs SPDT RF switch in a fully assembled, 2015 MHz–tuned configuration. It provides immediate RF path validation for transmit/receive switching and LNA protection use cases, with pre-characterized performance metrics including 0.4 dB Tx→RFC insertion loss and 20–27 dB RFC→Rx isolation at 2015 MHz. The board includes SMA connectors, DC control pins, and Rogers 4350 substrate for repeatable lab testing of the 115201-HMC546LP2.

Does the 115201-HMC546LP2 support failsafe operation, and how is it verified?

Yes, the 115201-HMC546LP2 supports failsafe operation via its underlying HMC546LP2E IC: when VCTL = 0 V (no control voltage applied), the RFC→Tx path remains closed while RFC→Rx is open. This behavior is confirmed by the truth table in the HMC546LP2E datasheet and can be measured directly on the 115201-HMC546LP2 board using RF network analysis. The board's layout ensures proper grounding of the exposed paddle and correct biasing to maintain failsafe integrity during power-loss scenarios.

What RF frequency band is the 115201-HMC546LP2 specifically tuned for, and why?

The 115201-HMC546LP2 is specifically tuned for the 2010–2025 MHz band, aligning with PCS and 3G UMTS uplink frequencies. Its matching network-using L1 = 4.3 nH, L2 = 3.9 nH, and C2 = 0.8 pF-optimizes insertion loss and isolation within this range, enabling low-distortion, high-power switching in base station repeaters and PMR handsets. This narrowband tuning maximizes the HMC546LP2E's 40 dBm P0.1dB and 64–67 dBm IP3 performance at 2015 MHz.

Can the 115201-HMC546LP2 be used for 2600 MHz applications?

No - the 115201-HMC546LP2 is fixed-tuned to 2015 MHz and not reconfigurable for 2600 MHz operation. For that band, Analog Devices offers the 115203-HMC546LP2 evaluation board, which uses different matching components (L1 = 1.6 nH, C2 = 0.7 pF, C7 = 1.5 pF). Attempting to operate the 115201-HMC546LP2 at 2600 MHz would degrade insertion loss (>0.8 dB), reduce isolation (<15 dB), and compromise linearity due to mismatched external network resonance.

What are the key layout requirements for integrating the HMC546LP2E IC used on the 115201-HMC546LP2?

The HMC546LP2E IC on the 115201-HMC546LP2 requires strict adherence to layout rules: the exposed paddle must be soldered to a solid RF ground plane; all RF traces must be 50 Ω controlled-impedance; dc blocking capacitors (C1, C3, C4, C5) and matching inductors (L1, L2) must match the 2015 MHz values specified in Table 5; and VDD and VCTL traces must be decoupled with low-ESR capacitors near pins 5 and 2. These practices are implemented on the 115201-HMC546LP2 to ensure repeatable 0.4 dB insertion loss and 27 dB isolation.