Analog Devices Inc. HMC596LP4TR

Overview

HMC596LP4 from Analog Devices (formerly Hittite Microwave) is a surface-mount 4×2 RF switch matrix IC designed for high-isolation signal routing in satellite LNBs and multiswitches. It operates from 200 MHz to 3.0 GHz, features integrated CMOS-compatible 4-bit decoder, +5 V single supply, and delivers ≤7.5 dB insertion loss and ≥40 dB isolation across its band. It supports independent or simultaneous selection of any input (HH/HL/VH/VL) to either output (OP1/OP2) in 50 Ω or 75 Ω systems.

For engineers reviewing the HMC596LP4 datasheet, HMC596LP4 pinout, HMC596LP4 application, or HMC596LP4 equivalent, this page provides verified functional context, validated RF performance metrics, confirmed package mapping to 24-lead 4×4 mm QFN, and real-world switching behavior in DBS/CATV signal path design.

Technical Context

The HMC596LP4 implements a bi-directional 4×2 RF switch matrix with fully decoded CMOS control logic (HV1/HV2/TONE1/TONE2), enabling 16 discrete RF path states. Its architecture supports independent output routing - OP1 and OP2 can select different inputs or the same input simultaneously - without internal cross-coupling.

All RF ports (VL, HL, VH, HH, OP1, OP2) are DC-coupled and require external 330 pF DC-blocking capacitors; Vdd is decoupled with a 1000 pF capacitor. Switching speed is 6.0 ns (tRISE/tFALL) and 6.5 ns (tON/tOFF), with operation specified from –40°C to +85°C and absolute max Vdd = +8 V.

Key Specifications

Pinout & Package

Package: 24-lead, 4×4 mm leadless QFN (exposed paddle), MSL1, Sn/Pb finish (HMC596LP4). All GND pins (1,2,4–6,13–15,17,18) and exposed paddle must be soldered to PCB RF ground. N/C pins (20,22,23) are not internally connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4×2 RF switch matrix applications.

Compared with HMC596LP4E, the HMC596LP4 provides identical RF performance and functionality in Sn/Pb assembly, while the QM11035 trades integrated control for wider bandwidth and higher isolation - making it a system-level alternative rather than a drop-in replacement.

Availability

HMC596LP4 is available at Aetrix Electronics and suitable for DBS LNBs, CATV multiswitches, and cellular test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for HMC596LP4 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 acquired Hittite Microwave in 2014 and maintains its high-frequency RF product portfolio, including broadband switches, amplifiers, and MMICs for communications infrastructure.

The HMC596LP4 belongs to Hittite's legacy SMT CMOS switch matrix family, engineered specifically for cost-sensitive, high-isolation RF routing in satellite reception and broadband distribution systems.

FAQ

What is the operating frequency range of the HMC596LP4?

The HMC596LP4 operates from 200 MHz to 3.0 GHz, with full electrical specifications validated across three sub-bands (200–950 MHz, 950–2150 MHz, and 2150–3000 MHz) in a 50 Ω system. Measured parameters-including insertion loss, isolation, and return loss-are provided for each band in the official datasheet, confirming consistent performance through the entire range.

Does the HMC596LP4 require external DC blocking capacitors?

Yes, the HMC596LP4 requires external DC blocking capacitors on all six RF ports (VL, HL, VH, HH, OP1, OP2). The datasheet specifies 330 pF, 0402-size capacitors for characterization, selected to maintain impedance match down to 200 MHz. Failure to include these blocks risks DC path conflicts and degraded RF performance.

Is the HMC596LP4 pin-compatible with the HMC596LP4E?

Yes, the HMC596LP4 and HMC596LP4E share identical pinout, package dimensions (24-lead 4×4 mm QFN), and electrical specifications. The only differences are RoHS compliance (matte Sn vs. Sn/Pb finish) and maximum reflow temperature (260 °C vs. 235 °C), making them functionally interchangeable in layout.

Can the HMC596LP4 be used in 75 Ω systems?

Yes, the HMC596LP4 is explicitly characterized and supported for use in both 50 Ω and 75 Ω systems. While datasheet measurements were performed in 50 Ω, the device's broadband matching and isolation performance remain effective in 75 Ω CATV and satellite distribution networks, as confirmed in the General Description section.

What is the maximum input power rating for the HMC596LP4?

The HMC596LP4 has a maximum input power rating of +23 dBm for frequencies from 200 MHz to 2150 MHz, as stated in the Absolute Maximum Ratings table. This rating applies per RF input port (VL, HL, VH, HH) and ensures reliable operation without permanent degradation under typical LNB and multiswitch signal levels.