Analog Devices Inc. 125825-HMC713LP3E

Overview

HMC713LP3E from Analog Devices (formerly Hittite Microwave) is a logarithmic detector/controller IC designed for RF power measurement and automatic gain/power control in 50 MHz–8 GHz signal chains. It delivers 54 dB dynamic range with ±1 dB accuracy up to 2.7 GHz, 17 mV/dB slope at 2.7 GHz, and operates from +2.7 V to +5.5 V supply. It is used in cellular infrastructure base stations for RSSI and closed-loop AGC.

For engineers reviewing the HMC713LP3E datasheet, HMC713LP3E pinout, HMC713LP3E application, or HMC713LP3E equivalent, key selection criteria include its wideband RF input (50–8000 MHz), dual-mode operation (detector or controller), temperature-stable logarithmic response, fast 24 ns rise time, and 3×3 mm LFCSP package compatibility with high-density RF layouts.

Technical Context

The HMC713LP3E implements successive compression architecture using cascaded limiting amplifiers whose outputs are summed and converted to a voltage-proportional-to-log(input-power). Its dual output pins (OUTP and OUTN) provide complementary logarithmic signals, with OUTN = 2.55 − 2 × OUTP, enabling differential measurement and noise rejection.

In detector mode, OUTP is connected to VSET via an RC network to establish a fixed intercept (−68 dBm) and slope (17 mV/dB); in controller mode, VSET accepts an external reference voltage (0.2–1.2 V) to set target RF power level, enabling real-time APC/AGC feedback loops with low-frequency gain of 64 dB and open-loop corner at 11 kHz.

Key Specifications

Pinout & Package

16-lead, 3×3 mm LFCSP package (9 mm² footprint) with exposed paddle; RoHS-compliant, matte tin finish, MSL1 rating, and thermal resistance of 184 °C/W (junction-to-lead). Ground leads (pins 2,5,9–12) and exposed paddle must be soldered to PCB RF ground per AN guidelines.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar logarithmic detector/controller applications.

Compared with ADL5513ACPZ-R7 and HMC1099LP4E, the HMC713LP3E uniquely balances 8 GHz bandwidth, 54 dB ±1 dB dynamic range, and 3×3 mm size - making it optimal for space-constrained, multi-band 4G/5G infrastructure and defense EW platforms requiring validated performance to 8 GHz.

Availability

HMC713LP3E is available at Aetrix Electronics and suitable for cellular infrastructure, military radar, and test equipment requiring stable component supply across extended temperature ranges and high-frequency RF performance.

Supply support for HMC713LP3E 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 integrates its high-frequency RF portfolio into precision analog and RF solutions for communications, defense, and instrumentation markets.

The HMC713LP3E belongs to Analog Devices' high-frequency logarithmic detector product line, engineered specifically for broadband RF power measurement and closed-loop control in demanding wireless infrastructure and electronic warfare systems.

FAQ

What is the maximum RF input power the HMC713LP3E can handle without damage?

The HMC713LP3E has an absolute maximum RF input power rating of +12 dBm. Exceeding this level risks permanent degradation of the internal RF front-end transistors. For reliable operation, input power should be kept within the specified ±1 dB dynamic range (e.g., −35 dBm to +19 dBm at 2.7 GHz) and never exceed +12 dBm even briefly. The device includes no internal protection diodes, so external limiting or attenuation is required for transient-prone environments.

How does the HMC713LP3E achieve logarithmic response without external calibration?

The HMC713LP3E achieves inherent logarithmic behavior through successive compression: multiple cascaded amplifier stages saturate progressively as input power increases, and their summed detector outputs produce a voltage linearly proportional to log(input power). This architecture eliminates dependence on process-matched components or trimming, delivering ±1 dB accuracy across temperature and frequency without factory calibration or on-board compensation circuits.

Can the HMC713LP3E operate in both detector and controller modes simultaneously?

No, the HMC713LP3E cannot operate in both modes simultaneously. Detector mode requires connecting OUTP to VSET via an RC network (per eval board schematic), fixing the intercept and slope. Controller mode requires disconnecting that link and applying an external voltage to VSET to define the target power level. Switching between modes requires physical reconfiguration of the external network - not a register setting or digital command.

What is the purpose of the CLPF pin on the HMC713LP3E?

The CLPF pin on the HMC713LP3E connects to an external capacitor (e.g., 10 nF) referenced to ground, forming a low-pass filter for the OUTP and OUTN outputs. This reduces high-frequency noise and ripple on the logarithmic DC output, improving measurement stability in noisy RF environments. The cutoff frequency is determined by the capacitor value and internal output impedance; larger capacitors lower bandwidth but increase settling time - a design trade-off for specific application SNR requirements.

Is the HMC713LP3E pin-compatible with earlier Hittite logarithmic detectors like the HMC60x series?

No, the HMC713LP3E is not pin-compatible with the HMC60x series (e.g., HMC6000LP3E). While both are 3×3 mm LFCSP packages, the HMC713LP3E uses 16 pins with distinct pin assignments (e.g., dual Vcc pins at 15/16, N/C at 1/4, CLPF at 8), whereas the HMC60x series uses different pin counts and functions. PCB redesign and layout changes are required for substitution - no drop-in replacement exists.