Analog Devices Inc. ADMV4420ACPZ-R2

Overview

ADMV4420ACPZ-R2 from Analog Devices is a K-band downconverter IC integrating an RF balun, LNA, double-balanced active mixer, high-dynamic-range IF amplifier, and fractional-N PLL with multicore VCO. It delivers 36 dB typical conversion gain, 7 dB noise figure, 7 dBm output P1dB, and 16 dBm output IP3 across 16.95–22.05 GHz RF input and 900–2500 MHz IF output-enabling satellite uplink/downlink signal conditioning in compact front-end designs.

For engineers reviewing the ADMV4420ACPZ-R2 datasheet, ADMV4420ACPZ-R2 pinout, ADMV4420ACPZ-R2 application, or ADMV4420ACPZ-R2 equivalent, this page provides verified specifications, SPI-programmable PLL configuration details, thermal design guidance for the 5 mm × 5 mm LFCSP package, and real-world performance data across temperature and supply voltage variations.

Technical Context

The ADMV4420ACPZ-R2 implements a fully integrated heterodyne architecture: its RF front end includes a single-ended 50 Ω input with on-chip balun and LNA, while the LO path uses an internal 8.175–10.575 GHz multicore VCO with 2× multiplier to generate 16.35–21.15 GHz signals. The fractional-N PLL supports up to 50 MHz PFD frequency and achieves 400 µs frequency settling within ±50 kHz resolution.

IF output employs an open-collector amplifier requiring external 5 V bias choke, delivering 75 Ω single-ended output impedance. All power domains (VPOS1_VCO, VPOS2_PLL, VPOS3_CP, VPOS4_IF) operate at 5 V with integrated LDO regulators, and digital control uses 3.3 V logic-level 4-wire SPI with CS, SCLK, SDI, and SDO pins.

Key Specifications

Pinout & Package

ADMV4420ACPZ-R2 is housed in a 32-lead, 5 mm × 5 mm LFCSP package with exposed pad (EPAD), RoHS compliant and rated for −40°C to +85°C operation. Thermal resistance θJA = 39.6°C/W (measured on thermally optimized PCB with heat sink).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar K-band downconverter applications.

Compared with HMC8192LP5E and ADMV1013ACPZ-R7, the ADMV4420ACPZ-R2 uniquely integrates RF front end, mixer, IF amplifier, and fractional-N PLL in one 5 mm × 5 mm package-reducing layout complexity, improving phase noise consistency, and shortening time-to-market for K-band satellite terminals.

Availability

ADMV4420ACPZ-R2 is available at Aetrix Electronics and suitable for satellite communication terminals, point-to-point microwave radios, and military SATCOM systems requiring stable component supply, guaranteed long-term availability, and traceable sourcing through authorized channels.

Supply support for ADMV4420ACPZ-R2 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and manufacturing in advanced SiGe BiCMOS processes.

The ADMV4420ACPZ-R2 belongs to Analog Devices' microwave downconverter product line, engineered specifically for K-band satellite communications and high-frequency wireless infrastructure-emphasizing integration, phase noise performance, and ease of system-level implementation.

FAQ

What is the operating temperature range for the ADMV4420ACPZ-R2?

The ADMV4420ACPZ-R2 is specified for continuous operation from −40°C to +85°C ambient temperature. Performance parameters-including conversion gain, noise figure, and phase noise-are characterized across this full range, and thermal design must account for θJA = 39.6°C/W on a properly implemented PCB with heat sinking. The device uses SiGe BiCMOS process technology to ensure stability under thermal stress.

Does the ADMV4420ACPZ-R2 require external LO signal generation?

No, the ADMV4420ACPZ-R2 does not require an external LO signal. It integrates a fractional-N PLL with multicore VCO and internal ×2 multiplier to generate LO frequencies from 16.35 GHz to 21.15 GHz directly on-chip. Only a 50 MHz reference (crystal or external source) is needed at REF/XTAL1 to drive the PLL.

How is the IF output of the ADMV4420ACPZ-R2 biased and terminated?

The IFOUT pin (Pin 30) of the ADMV4420ACPZ-R2 is an open-collector output requiring external 5 V DC bias via a choke inductor and 75 Ω AC termination. A typical implementation uses a 10 µH RF choke from VPOS4_IF to IFOUT, with a 75 Ω resistor to ground at the IFOUT node. This configuration ensures proper DC biasing while preserving 75 Ω output impedance for video or SDR interfaces.

What SPI voltage levels are compatible with the ADMV4420ACPZ-R2?

The ADMV4420ACPZ-R2 supports 3.3 V logic-level SPI signaling on SCLK, SDI, SDO, and CS pins. Logic high is defined as 1.2–3.6 V, and logic low as −0.3–0.5 V. These pins are not 5 V tolerant; interfacing with 5 V microcontrollers requires level-shifting circuitry or a 3.3 V I/O domain. ENBL0 and ENBL1 also operate at 3.3 V nominal.

Can the ADMV4420ACPZ-R2 be used for both low-side and high-side LO injection?

Yes, the ADMV4420ACPZ-R2 supports both low-side and high-side LO injection configurations across its full RF (16.95–22.05 GHz) and IF (900–2500 MHz) ranges. Datasheet Figures 16–47 provide measured conversion gain, noise figure, P1dB, and IP3 for both injection modes at multiple IF and LO frequencies-enabling optimal selection based on image rejection and filter requirements.