Analog Devices Inc. HMC815BLC5TR

Overview

HMC815BLC5TR from Analog Devices is a GaAs MMIC I/Q upconverter operating from 21 GHz to 27 GHz RF, with 10.5–14.5 GHz LO input and DC–3.75 GHz IF bandwidth. It delivers 12 dB typical conversion gain, 20 dBc sideband rejection, and +20 dBm OP1dB, enabling high-fidelity single-sideband upconversion in millimeter-wave transmitters.

For engineers reviewing the HMC815BLC5TR datasheet, HMC815BLC5TR pinout, HMC815BLC5TR application, or HMC815BLC5TR equivalent, this device supports precise RF signal synthesis where LO harmonics, sideband purity, and wide IF bandwidth are critical-especially in military radar front-ends, satellite uplinks, and point-to-point radio systems requiring surface-mount integration without wire bonding.

Technical Context

The HMC815BLC5TR integrates an active 2× LO multiplier, I/Q mixer core, and RF driver amplifier in a single GaAs pHEMT MMIC die. Its architecture enables high-side or low-side LO injection (10.5–14.5 GHz) to generate RF output at 21–27 GHz using external 90° hybrid selection of upper or lower sideband.

It requires three independent drain supplies (VDD1 for LO amp, VDD2/VDD3 for RF amp) and gate bias (VGG) for optimal linearity. Performance is specified across −40°C to +85°C with 4.5 V supply and 4 dBm LO drive, and return loss exceeds 12 dB at RF, 15 dB at LO, and 15 dB at IF ports.

Key Specifications

Pinout & Package

Package: 4.90 mm × 4.90 mm, 32-terminal ceramic LCC with exposed thermal pad (RoHS compliant). Requires low-impedance RF/dc ground connection to exposed pad and designated GND pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar I/Q upconverter applications.

Compared with HMC815ALC5TR, the HMC815BLC5TR extends usable RF range by 3 GHz and improves sideband rejection by 2 dBc-critical for 26–27 GHz satellite uplinks. Versus HMC1040LP5E, it integrates the LO doubler and simplifies layout, trading 0.5 GHz RF upper limit and 0.5 GHz IF bandwidth for reduced BOM count and LO path loss.

Availability

HMC815BLC5TR is available at Aetrix Electronics and suitable for point-to-point radios, military radar front-ends, and satellite communication uplinks requiring stable component supply, RoHS-compliant packaging, and millimeter-wave upconversion performance.

Supply support for HMC815BLC5TR 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 is a global leader in high-performance analog, mixed-signal, and RF ICs, serving aerospace, defense, communications, and industrial markets with precision signal processing solutions.

The HMC815BLC5TR belongs to Analog Devices' Hittite Microwave MMIC product line, engineered specifically for broadband microwave and millimeter-wave upconversion in defense and satellite systems where integration, linearity, and sideband purity are paramount.

FAQ

What is the recommended LO drive level for optimal sideband rejection in the HMC815BLC5TR?

The HMC815BLC5TR achieves its typical 20 dBc sideband rejection at 4 dBm LO drive, as specified in the datasheet under TA = 25°C and IF = 2500 MHz. Deviating below 0 dBm or above 6 dBm degrades sideband suppression-Figure 14 shows rejection dropping to ~15 dBc at 0 dBm LO. Always maintain LOIN within the 0–6 dBm absolute maximum rating to avoid damage or parametric shift.

Does the HMC815BLC5TR require external filtering on the RF output port?

The HMC815BLC5TR does not require external RF bandpass filtering to meet its specified 21–27 GHz output performance, as RF return loss exceeds 12 dB across the band and harmonic content is suppressed by the I/Q architecture. However, system-level filtering may still be needed to meet regulatory mask requirements or suppress out-of-band emissions from subsequent stages-not due to HMC815BLC5TR limitations.

Can the HMC815BLC5TR operate with DC-coupled IF inputs?

Yes-the HMC815BLC5TR supports true DC-coupled IF operation on pins IF1 and IF2, provided neither pin sources nor sinks more than ±3 mA. This enables baseband I/Q modulation without external blocking capacitors, essential for zero-IF architectures and pulsed radar waveforms. Exceeding ±3 mA risks device malfunction or permanent damage per Absolute Maximum Ratings Table 2.

What is the thermal management requirement for continuous operation of the HMC815BLC5TR at +85°C ambient?

For continuous operation at +85°C ambient, the HMC815BLC5TR requires a low-impedance thermal path from its exposed pad to a solid copper ground plane with ≥5 × 5 thermal vias (per JEDEC JESD51-2). The datasheet specifies θJA = 46.4 °C/W under natural convection; insufficient thermal design causes junction temperature to exceed 175°C maximum, triggering irreversible degradation in conversion gain and OIP3.

How does the HMC815BLC5TR achieve sideband suppression without an integrated 90° hybrid?

The HMC815BLC5TR implements an I/Q mixer core but does not integrate the 90° hybrid-it requires an external passive or active hybrid at the IF1/IF2 ports to generate the quadrature phase relationship. Sideband suppression arises from amplitude/phase balance between the I and Q paths and the precision of the external hybrid; the HMC815BLC5TR's 20 dBc rejection assumes ideal 90° phase shift and matched IF port impedances.