Analog Devices Inc. ADRF6620ACPZ-R7

Overview

ADRF6620ACPZ-R7 from Analog Devices is a highly integrated RF receiver front-end IC combining a broadband active mixer, fractional-N PLL synthesizer, multicore VCO, 4:1 RF switch, tunable balun, digital step attenuator (0–15 dB), and digitally programmable IF variable gain amplifier (3–15 dB). It operates from 700 MHz to 2700 MHz RF input and delivers balanced 150 Ω IF output for direct connection to ADCs in wireless infrastructure receivers.

For engineers reviewing the ADRF6620ACPZ-R7 datasheet, ADRF6620ACPZ-R7 pinout, ADRF6620ACPZ-R7 application, or ADRF6620ACPZ-R7 equivalent, key selection criteria include its 45 dBm output IP3 at 1900 MHz, integrated LO generation up to 2850 MHz, −40°C to +85°C operation, 48-lead 7 mm × 7 mm LFCSP package, and SPI-programmable configuration for multi-band base station DPD receivers.

Technical Context

The ADRF6620ACPZ-R7 implements a high-isolation SP4T RF switch with on-chip tunable balun enabling four single-ended 50 Ω RF inputs, paired with a high-linearity active mixer core optimized for noise figure (16 dB at 900 MHz) and OIP3 (45 dBm). Its fractional-N PLL supports continuous LO coverage from 350 MHz to 2850 MHz using three VCO cores (2.8–5.7 GHz) and configurable dividers (÷1/÷2/÷4/÷8).

The IF DGA provides 0.5 dB gain steps across 3–15 dB with >700 MHz −3 dB bandwidth and 150 Ω differential output impedance, while the 3-wire SPI interface (3.3 V tolerant) enables full register-level control of mixer bias, DGA gain, balun tuning, and PLL parameters including INT/Frac/N division and loop filter calibration.

Key Specifications

Pinout & Package

The ADRF6620ACPZ-R7 is housed in a RoHS-compliant 48-lead LFCSP (7 mm × 7 mm, 0.85 mm height) with exposed thermal pad requiring low-impedance ground connection per Analog Devices layout guidelines.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF receiver front-end applications.

Compared with ADRF6612ACPZ-R7 and TRF372017IRGZT, the ADRF6620ACPZ-R7 uniquely integrates SP4T switching and tunable balun-reducing external component count by ≥8 per RF path-while maintaining competitive linearity (45 dBm IP3) and phase noise (−132 dBc/Hz @ 1 MHz) for demanding wireless infrastructure applications.

Availability

ADRF6620ACPZ-R7 is available at Aetrix Electronics and suitable for cellular base station receivers, digital predistortion feedback paths, and small cell remote radio heads requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for ADRF6620ACPZ-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 healthcare markets with precision signal processing solutions.

The ADRF6620ACPZ-R7 belongs to Analog Devices' high-integration RF receiver front-end product line, designed specifically for wireless infrastructure applications demanding co-integrated mixing, synthesis, and IF conditioning in minimal footprint.

FAQ

What is the RF input frequency range supported by the ADRF6620ACPZ-R7?

The ADRF6620ACPZ-R7 supports an RF input frequency range of 700 MHz to 2700 MHz. This covers major cellular bands including LTE Bands 12/13/17 (700 MHz), Band 3 (1800 MHz), Band 4 (1700/2100 MHz), and Band 7 (2600 MHz). Operation outside this range is not characterized or guaranteed per the datasheet specifications.

Does the ADRF6620ACPZ-R7 require an external LO source, or can it generate its own LO signal?

ADRF6620ACPZ-R7 can generate its own LO signal using the integrated fractional-N PLL and multicore VCO, covering 350 MHz to 2850 MHz. It also accepts external differential LO inputs (350–3200 MHz) via LOIN+/LOIN− pins. The device automatically configures internal/external LO mode based on register settings and REF_IN presence.

What is the function of the RFSW0 and RFSW1 pins on the ADRF6620ACPZ-R7?

The RFSW0 and RFSW1 pins on the ADRF6620ACPZ-R7 provide external hardware control of the internal 4:1 RF switch. Logic-high (2.5 V) on these pins selects specific RFINx inputs (RFIN0–RFIN3) independent of SPI register control, enabling fast antenna switching or fail-safe RF path selection in safety-critical systems.

How is the IF output impedance configured on the ADRF6620ACPZ-R7, and what load should be used?

The ADRF6620ACPZ-R7 provides balanced 150 Ω differential IF output impedance on IFOUT1+/IFOUT1− and IFOUT2+/IFOUT2−. Per the datasheet, IFOUT1+ and IFOUT2+ must be tied together (same for −) to form a single 150 Ω differential output pair. This matches standard transformer-coupled or balun-based ADC interfaces without additional termination.

What power supply requirements does the ADRF6620ACPZ-R7 have, and how is decoupling implemented?

The ADRF6620ACPZ-R7 requires a single 5 V supply (4.75–5.25 V) applied to five VCC pins (VCC1–VCC5). Each VCC pin must be decoupled to ground with both 100 pF and 0.1 µF capacitors placed near the pin. Four DECLx pins require 100 pF, 0.1 µF, and 10 µF decoupling for optimal PLL stability and noise performance.