Analog Devices Inc. HMC1097LP4ETR

Overview

HMC1097LP4ETR from Analog Devices (formerly Hittite Microwave) is a wideband direct quadrature modulator IC operating from 100 MHz to 6000 MHz, delivering +11 dBm output P1dB, +31 dBm output IP3, and –162 dBm/Hz noise floor. It features single-ended 50 Ω RF output, differential I/Q baseband inputs with 0.45 V DC bias, and LO input range of 100–6000 MHz requiring –6 to +6 dBm drive. It is used in W-CDMA, LTE, and WiMAX transmitter front-ends.

For engineers reviewing the HMC1097LP4ETR datasheet, HMC1097LP4ETR pinout, HMC1097LP4ETR application, or HMC1097LP4ETR equivalent, key selection criteria include calibrated carrier feedthrough ≤ –57 dBm at 2.1 GHz, sideband suppression ≥ 48 dBc (calibrated), supply voltage tolerance (±2.5% around 5.0 V), enable/disable settling time (400 ns), and 24-lead 4×4 mm QFN package compatibility with RF layout best practices.

Technical Context

The HMC1097LP4ETR integrates a high-accuracy LO quadrature phase splitter, limiting amplifiers, and double-balanced I/Q mixers to enable direct zero-IF-to-RF upconversion without image-reject filtering. Its LO path is insensitive to input power variation due to saturation-based drive, supporting both differential (100 Ω) and single-ended (50 Ω via LON) LO configurations.

Baseband inputs (IP/IN, QP/QN) are high-impedance differential ports with nominal 0.45 V DC common-mode bias and 1.3 Vpp AC differential swing; carrier and sideband suppression are optimized by adjusting DC offsets (<15 mV) on I/Q pairs. The RFOUT is DC-coupled, internally matched to 50 Ω, and requires only an external DC-blocking capacitor.

Key Specifications

Pinout & Package

Package: 24-lead 4×4 mm QFN (LP4), RoHS-compliant, exposed ground paddle, MSL1, thermal resistance 9°C/W (junction-to-paddle).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar direct quadrature modulator applications.

Compared with ADL5375-05 and TRF3705, the HMC1097LP4ETR provides broader frequency coverage (to 6 GHz), higher output linearity (+31 dBm OIP3), and superior noise floor (–162 dBm/Hz), making it optimal for high-performance wireless infrastructure where spectral purity and wideband flexibility are critical.

Availability

HMC1097LP4ETR is available at Aetrix Electronics and suitable for UMTS basestations, WiMAX fixed wireless access units, and ISM-band transceivers requiring stable component supply across industrial temperature range (–40°C to +85°C) and long-lifecycle production.

Supply support for HMC1097LP4ETR 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 RFIC product lines with focus on performance-critical wireless infrastructure and defense applications.

The HMC1097LP4ETR belongs to Analog Devices' broadband modulator family, designed specifically for direct-conversion transmitter architectures in 3G/4G/5G basestations, point-to-point radios, and test equipment requiring wide instantaneous bandwidth and calibrated suppression performance.

FAQ

What is the recommended LO drive level for HMC1097LP4ETR?

The HMC1097LP4ETR accepts –6 dBm to +6 dBm LO input power in either single-ended (via LON) or differential mode. At 0 dBm, it achieves optimal carrier feedthrough and sideband suppression. Driving outside this range degrades linearity and increases LO leakage; the LO port does not require DC blocking capacitors due to internal AC coupling.

How is carrier feedthrough calibrated on the HMC1097LP4ETR?

Carrier feedthrough on the HMC1097LP4ETR is calibrated by applying small DC offset voltages (<15 mV) to the differential I and Q baseband inputs (IP/IN, QP/QN). For example, at 2.5 GHz, a typical setting is –3 mV on I and +2 mV on Q. These offsets compensate for internal transistor mismatches and are held constant over temperature after initial +25°C optimization.

Does the HMC1097LP4ETR require external RF matching components?

No. The HMC1097LP4ETR RFOUT pin is internally matched to 50 Ω and requires only a single external DC-blocking capacitor. No baluns, transformers, or impedance-matching networks are needed, simplifying PCB layout and reducing insertion loss in the transmit chain.

What is the function of the EN pin on the HMC1097LP4ETR?

The EN pin on the HMC1097LP4ETR controls global enable/disable: grounded or floating enables full operation (170 mA supply current); pulled to +5 V disables LO amplifiers, mixers, and output stage (reducing current to 8 mA and suppressing LO leakage by –57.1 dBm at 2.1 GHz). Settling time is 400 ns for both transitions.

Can the HMC1097LP4ETR operate with a 3.3 V supply?

No. The HMC1097LP4ETR is specified only for +4.75 V to +5.25 V operation. Supplying 3.3 V will prevent proper biasing of internal amplifiers and mixers, resulting in failure to achieve rated P1dB, IP3, or noise floor. It is incompatible with 3.3 V systems unless a dedicated 5 V rail is provided.