Analog Devices Inc. ADSC572WCBCZ302

Overview

ADSC572WCBCZ302 from Analog Devices is a silicon-based 6-bit digital RF attenuator with 0.5 dB LSB resolution, operating from 9 kHz to 40 GHz. It delivers 31.5 dB attenuation range, ≤4.5 dB insertion loss up to 40 GHz, and ±0.40 + 3.0% attenuation accuracy at 40 GHz - deployed in 5G mmWave infrastructure and military radar front-ends where wideband amplitude control and high linearity are critical.

For engineers reviewing the ADSC572WCBCZ302 datasheet, ADSC572WCBCZ302 pinout, ADSC572WCBCZ302 application, or ADSC572WCBCZ302 equivalent, this page provides verified specifications, validated LGA-24 pin mapping, confirmed SPI/parallel interface behavior, and real-world performance boundaries across frequency, temperature, and power domains.

Technical Context

The ADSC572WCBCZ302 implements a fixed 6-bit attenuator array with binary-weighted 0.5/1/2/4/8/16 dB segments, driven by an integrated CMOS/LVTTL-compatible control logic block supporting both serial (SPI) and parallel modes. Its RF path is dc-coupled, 50 Ω matched at both ATTIN and ATTOUT ports, with no external matching required for baseline operation.

It requires dual supplies (+3.3 V / −3.3 V), achieves 8 µs RF amplitude settling time (0.1 dB), and maintains P0.1dB ≥27 dBm across all attenuation states. Phase stability is characterized up to 100° relative phase shift at 40 GHz, with tight step error distribution (±0.65 dB max at 40 GHz).

Key Specifications

Pinout & Package

ADSC572WCBCZ302 uses a 24-terminal, 4 mm × 4 mm RoHS-compliant land grid array (LGA) package with exposed thermal pad requiring PCB ground connection. Pin functions are validated per Analog Devices ADRF5720 Rev. B datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF attenuator applications.

Compared with ADRF5730 and HMC6502, ADSC572WCBCZ302 uniquely balances ultralow-frequency operability (9 kHz), full 40 GHz coverage, and dual-supply precision - making it the only option for wideband calibration sources and legacy RF test fixtures requiring dc-coupled LF response.

Availability

ADSC572WCBCZ302 is available at Aetrix Electronics and suitable for 5G millimeter wave infrastructure, military radar front-ends, and automated test equipment requiring stable component supply across extended temperature and frequency ranges.

Supply support for ADSC572WCBCZ302 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 semiconductor leader specializing in high-performance analog, mixed-signal, and RF ICs for precision signal processing applications.

ADSC572WCBCZ302 belongs to the ADRF5720 product line - engineered for wideband RF amplitude control in next-generation wireless, defense, and instrumentation systems demanding GHz-range linearity and sub-dB resolution.

FAQ

What is the operating frequency range of the ADSC572WCBCZ302?

The ADSC572WCBCZ302 operates from 9 kHz to 40 GHz, covering LF through millimeter-wave bands. This enables use in legacy RF test gear (e.g., vector network analyzers below 100 MHz) and emerging 5G FR2 deployments up to 40 GHz - a range confirmed in the ADRF5720 Rev. B datasheet Table 1 and Figure 8–13.

Does the ADSC572WCBCZ302 support both serial and parallel digital control?

Yes, the ADSC572WCBCZ302 supports both interfaces: PS pin low enables 6-wire parallel mode (D0–D5 + LE); PS high enables 4-wire SPI (SERIN, SEROUT, CLK, LE). Pin functionality is defined in Table 5 and Figure 32 of the ADRF5720 datasheet, and both modes are electrically validated per timing specs in Table 2.

What are the supply voltage requirements for the ADSC572WCBCZ302?

The ADSC572WCBCZ302 requires dual supplies: +3.3 V (VDD) and −3.3 V (VSS), with recommended operating ranges of +3.15 V to +3.45 V and −3.45 V to −3.15 V respectively. These rails power the RF core and digital interface; operation outside this range risks parametric degradation or damage per Absolute Maximum Ratings Table 3.

How does the ADSC572WCBCZ302 handle RF power at its ATTIN and ATTOUT ports?

The ADSC572WCBCZ302 handles up to 30 dBm peak RF at ATTIN in insertion loss state, and 27 dBm peak in other states. ATTOUT supports lower levels: 21 dBm peak steady-state. Hot-switching derates these by 3 dB. All values are specified at TCASE = 85°C and confirmed in Table 1 and Absolute Maximum Ratings Table 3 of the ADRF5720 datasheet.

Is the ADSC572WCBCZ302 pin-compatible with any other Analog Devices attenuators?

Yes, the ADSC572WCBCZ302 is pin-compatible with the ADRF5730, as explicitly stated in the ADRF5720 General Description and Features sections. Both share identical 24-terminal LGA-4 mm × 4 mm footprints and pin assignments, enabling drop-in replacement where faster switching (3.5 µs vs. 8 µs) is acceptable and low-frequency operation is not required.