Qorvo DKFC2071A

Overview

DKFC2071A from Qorvo is a complete design kit for the RFFC2071A - a dual-mixer, full-duplex RF synthesizer/VCO IC supporting 85–2700 MHz LO generation and 30–2700 MHz RF/IF conversion. It integrates a fractional-N PLL, temperature-compensated VCO, two high-linearity Gilbert-cell mixers (IIP3 +23 dBm), and six programmable GPOs. Designed for wideband infrastructure transceivers requiring simultaneous up/down-conversion.

For engineers reviewing the DKFC2071A datasheet, pinout, applications, or equivalent options, this kit enables rapid evaluation of full-duplex frequency translation, low-phase-noise LO synthesis (0.18° rms at 1 GHz), mixer bias optimization, multi-slice serial control, and external modulation - all using the included RFFC2071A EVB, cables, and Qorvo programming software.

Technical Context

The DKFC2071A supports the RFFC2071A IC, which implements a three-VCO architecture with auto-select and coarse-tuning logic to cover 85–2700 MHz LO output using integrated /2–/32 dividers. Its fractional-N PLL uses a sigma-delta modulator for 1.5 Hz typical step size and ultra-low spurs, while external loop filter configuration allows trade-off between phase noise and lock time.

The device features two independent differential mixers with programmable bias (15–45 mA), enabling full-duplex operation via MODE/FULLD control. Mixer inputs and outputs are optimized for 100 Ω/200 Ω differential impedance, require external baluns, and deliver −2 dB conversion gain (excluding balun loss) with 10 dB input return loss across 30–2700 MHz.

Key Specifications

Availability

DKFC2071A is available at Aetrix Electronics and suitable for CATV head-ends, LTE infrastructure, and satellite communications requiring stable component supply, fast prototyping cycles, and validated reference designs.

Supply support for DKFC2071A 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

Qorvo is a global leader in RF solutions, specializing in high-performance semiconductor components for defense, infrastructure, and mobile applications.

The RFFC2071A product line delivers integrated wideband frequency conversion for next-generation wireless infrastructure, combining synthesizer, VCO, and dual-mixer functionality in a single QFN package to reduce front-end complexity and bill-of-materials cost.

FAQ

What is the DKFC2071A and how does it relate to the RFFC2071A IC?

The DKFC2071A is Qorvo's official complete design kit for the RFFC2071A RF synthesizer/VCO with integrated dual mixers. It includes a fully assembled and tested evaluation board, USB interface cable, and Qorvo's programming software - enabling immediate functional validation, performance characterization, and schematic/layout reference for integrating the RFFC2071A into production systems.

Does the DKFC2071A support full-duplex operation out of the box?

Yes - the DKFC2071A evaluation board is configured to demonstrate full-duplex mode of the RFFC2071A, where both mixer paths operate simultaneously under MODE and FULLD control. The board includes wideband baluns, matching networks, and test points for independent RF/IF path measurement, allowing direct validation of isolation (>60 dB mixer-to-mixer), gain flatness, and IIP3 across 30–2700 MHz.

Can the DKFC2071A be used to evaluate external LO injection into the RFFC2071A?

Yes - the DKFC2071A EVB provides access to the EXT_LO (Pin 2) and EXT_LO_DEC (Pin 3) pins per the RFFC2071A datasheet. Users can inject an external 85–5400 MHz LO signal via a 1:1 balun, bypassing the internal PLL/VCO, and configure the RFFC2071A for mixer-only operation - useful for phase-noise-critical applications requiring ultra-low-jitter external sources.

What software tools are included with the DKFC2071A and are they compatible with current OS versions?

The DKFC2071A includes Qorvo's official RFFM GUI software, which runs on Windows 10/11 and supports register-level programming, real-time LO tuning, mixer bias adjustment, GPO control, lock detection monitoring, and external modulation setup. Firmware updates and register map documentation are available via Qorvo's product page DA000718.

How does the DKFC2071A help validate multi-slice serial bus operation for the RFFC2071A?

The DKFC2071A EVB exposes ADD1 (Pin 15) and ADD2 (Pin 16), enabling hardware address configuration for multi-slice mode. When ADDR is set in SDI_CTRL, up to four RFFC2071A devices - including those on additional DKFC2071A kits - can share one SCLK/SDATA bus without chip-select lines. The included software supports individual device addressing and synchronized register writes for system-level timing validation.