Analog Devices Inc. ADRF6720-27ACPZ-R7

Overview

ADRF6720-27ACPZ-R7 from Analog Devices is a wideband quadrature modulator with integrated fractional-N PLL and multicore VCOs, functioning as a complete RF transmit front-end for direct-conversion transmitters. It delivers 10.8 dBm P1dB at 2140 MHz, −44.3 dBm carrier feedthrough, −40.8 dBc sideband suppression, and supports 400–3000 MHz RF output in 3G/4G/LTE base stations.

For engineers reviewing the ADRF6720-27ACPZ-R7 datasheet, ADRF6720-27ACPZ-R7 pinout, ADRF6720-27ACPZ-R7 application, or ADRF6720-27ACPZ-R7 equivalent, this page provides verified functional specifications, validated pin roles, confirmed RF/LO/baseband performance envelopes, and real-world deployment context for microwave radios and satellite modems.

Technical Context

The ADRF6720-27ACPZ-R7 integrates a high-linearity I/Q modulator, fractional-N PLL with programmable charge pump (250–1000 µA), and four low-phase-noise multicore VCOs covering 356.25–2855 MHz. Its internal LO generation uses a divide-by-2 phase splitter or polyphase filter depending on external/internal mode.

Digital calibration via SPI enables real-time optimization of carrier feedthrough, sideband suppression, HD3/IP3, and LO injection side (high-side/low-side). Baseband inputs accept 1 V_p-p differential signals with 2.68 V DC bias and >1000 MHz 1 dB bandwidth, directly interfacing with high-speed DACs.

Key Specifications

Pinout & Package

ADRF6720-27ACPZ-R7 is housed in a RoHS-compliant 40-lead, 6 mm × 6 mm LFCSP package with exposed thermal pad soldered to ground plane for optimal RF thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quadrature modulator with integrated synthesizer applications.

Compared with ADRF6780ACPZ-R7 and TRF372017IRGZT, the ADRF6720-27ACPZ-R7 uniquely balances 400–3000 MHz coverage, integrated PLL/VCO/balun, and 6×6 mm footprint-making it optimal for LTE small cells and compact microwave radios where BOM count and layout simplicity are critical.

Availability

ADRF6720-27ACPZ-R7 is available at Aetrix Electronics and suitable for 4G/LTE base station transmitters, microwave point-to-point radios, satellite modem uplinks, and military tactical radios requiring stable component supply across industrial temperature ranges.

Supply support for ADRF6720-27ACPZ-R7 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 communications, industrial, automotive, and defense markets with precision signal processing solutions.

The ADRF6720-27ACPZ-R7 belongs to Analog Devices' ADRF RF transceiver and modulator product line, designed specifically for highly integrated, wideband wireless infrastructure transmitters requiring minimal external components and robust calibration.

FAQ

What is the RF output frequency range supported by the ADRF6720-27ACPZ-R7?

The ADRF6720-27ACPZ-R7 supports an RF output frequency range of 400 MHz to 3000 MHz. This range fully covers all major 3G and 4G LTE bands (including B1–B41), WiMAX, and microwave point-to-point frequencies. The device achieves this using its integrated multicore VCOs and fractional-N PLL, eliminating the need for external frequency synthesis in most infrastructure applications.

Does the ADRF6720-27ACPZ-R7 require external LO input, or can it generate its own LO signal?

The ADRF6720-27ACPZ-R7 can generate its own LO signal using its integrated fractional-N PLL and four multicore VCOs, covering 356.25–2855 MHz internally. It also supports external LO input (−6 to +6 dBm differential) on LOIN+/LOIN− pins, allowing use with ultra-low-jitter external sources when phase noise performance is paramount. Both modes are selectable via SPI configuration.

How does the ADRF6720-27ACPZ-R7 handle carrier feedthrough and sideband suppression?

The ADRF6720-27ACPZ-R7 incorporates dedicated on-chip DACs (DCOFF_I/Q and I_LO/Q_LO) for digital nulling of carrier feedthrough and sideband suppression. At 2140 MHz, it achieves −44.3 dBm feedthrough and −40.8 dBc suppression out-of-box, and −53.0 dBm and −50.2 dBc respectively after calibration-enabling high ACLR without external trimming components.

What is the baseband input interface specification for the ADRF6720-27ACPZ-R7?

The ADRF6720-27ACPZ-R7 accepts differential baseband I/Q inputs (I+/I−, Q+/Q−) with a fixed 2.68 V DC bias and supports >1000 MHz 1 dB modulation bandwidth. Input impedance is ~55 kΩ || 0.97 pF at 100 MHz, optimized for direct connection to high-speed DAC outputs without AC coupling or level-shifting circuitry.

What package type and thermal characteristics does the ADRF6720-27ACPZ-R7 use?

The ADRF6720-27ACPZ-R7 uses a 40-lead, 6 mm × 6 mm LFCSP package with exposed thermal pad. Its thermal resistance is θ_JA = 30.23°C/W and θ_JC = 0.44°C/W, enabling efficient heat dissipation during continuous 425 mA Tx operation. The exposed pad must be soldered to a low-impedance ground plane per JEDEC JESD51-2 guidelines.