Analog Devices Inc./Maxim Integrated MAX2982GCD/V+

Overview

MAX2982GCD/V+ from Maxim Integrated is an industrial broadband power-line transceiver integrating MAC and PHY layers in a single 128-pin LQFP device. It delivers up to 14Mbps data rate using 84-carrier OFDM, supports HomePlug 1.0 compliance, operates from –40°C to +105°C, and features integrated ARM946E-S™ processor, DES encryption, and temperature sensor - enabling robust communication in motor control and remote monitoring over noisy power lines.

For engineers reviewing the MAX2982GCD/V+ datasheet, MAX2982GCD/V+ pinout, MAX2982GCD/V+ application, or MAX2982GCD/V+ equivalent, key selection considerations include its -1dB SNR ROBO mode for harsh line conditions, MII/RMII/UART/Ethernet MAC interface flexibility, spectral shaping capability, and AEC-Q100-REV-G automotive-grade qualification.

Technical Context

The MAX2982GCD/V+ implements a full HomePlug 1.0–compliant PHY with 84-carrier OFDM modulation, supporting DBPSK, DQPSK (1/2 & 3/4 FEC), and enhanced ROBO mode. Its integrated ARM946E-S™ core enables field-upgradable firmware via TFTP and real-time channel adaptation.

It interfaces directly with the MAX2981 analog front-end via dedicated AFECLK, AFETXEN, AFEREN, AFEPDRX, AFERESET, and 10-bit AFEDAD[9:0] signals, while providing IEEE 802.3-compliant MII, RMII, synchronous FIFO, and 10/100 Ethernet MAC connectivity - all operating across industrial temperature range with dual supply domains (VDD33 = 3.3V, VDD12 = 1.2V).

Key Specifications

Pinout & Package

MAX2982GCD/V+ is housed in a 128-pin lead-free LQFP package (14mm × 14mm, 0.4mm pitch) with exposed thermal pad. Power domains are segregated: VDD33 (3.3V digital), VDD12 (1.2V core), AVDD33/AVDD12 (analog supplies), and dedicated DGND/AVSS grounds. Thermal resistance θ_JA = 30°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power-line transceiver applications.

Compared with MAX2982GCD/V+, MAX2981GCD/V+ is a dependent analog companion, not a functional substitute, while ST7580 serves a distinct low-speed, narrowband smart-grid niche with incompatible modulation and regulatory scope - neither offers drop-in replacement capability.

Availability

MAX2982GCD/V+ is available at Aetrix Electronics and suitable for industrial motor drives, remote SCADA telemetry, building energy management, and smart grid distribution automation requiring stable component supply across extended temperature and long product lifecycles.

Supply support for MAX2982GCD/V+ 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

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for industrial, automotive, and communications applications - emphasizing reliability, integration, and extended temperature performance.

The MAX2982GCD/V+ belongs to Maxim's industrial power-line communication product line, engineered specifically for robust, high-speed data transmission over noisy AC and DC power lines in harsh environments - targeting factory automation, energy infrastructure, and mission-critical control systems.

FAQ

What is the primary function of the MAX2982GCD/V+ in a power-line communication system?

The MAX2982GCD/V+ serves as a fully integrated HomePlug 1.0–compliant power-line transceiver, combining MAC and PHY layers with an ARM946E-S™ processor. It handles OFDM modulation/demodulation, forward error correction, DES encryption, and interfaces directly to Ethernet MACs or microcontrollers via MII/RMII/UART - enabling secure, high-speed (up to 14Mbps) data transmission over unshielded AC wiring. Its design eliminates the need for external processors or protocol stacks in industrial broadband PLC applications.

Does the MAX2982GCD/V+ require an external analog front-end, and if so, which one is specified?

Yes, the MAX2982GCD/V+ requires the MAX2981 analog front-end (AFE) to complete the power-line signal chain. The MAX2982GCD/V+ communicates with the MAX2981 via dedicated signals including AFECLK (50MHz clock), AFETXEN, AFEREN, AFEPDRX, AFERESET, and the 10-bit AFEDAD[9:0] digital interface. This split architecture separates digital baseband processing from high-voltage line driving/receiving functions - a requirement explicitly defined in the MAX2982GCD/V+ datasheet and typical application circuit.

What are the supported interface modes between the MAX2982GCD/V+ and a host processor?

The MAX2982GCD/V+ supports three primary host interface modes: IEEE 802.3-compliant Media Independent Interface (MII), Reduced MII (RMII), and high-speed synchronous FIFO. MII uses 4-bit TX/RX data paths with separate clock and control signals; RMII reduces pin count using 2-bit data and a 50MHz reference clock; the FIFO mode provides glue-free connection to microcontrollers via BUFRD/BUFWR strobes and 8-bit parallel data bus. All modes are selectable via configuration registers and do not require external logic.

How does the ROBO mode in the MAX2982GCD/V+ improve performance in electrically noisy environments?

ROBO mode in the MAX2982GCD/V+ is a robust OFDM modulation scheme achieving a –1dB SNR threshold at 10⁻⁴ frame error rate - significantly lower than standard DQPSK or DBPSK modes. It employs aggressive forward error correction, reduced constellation density, and optimized tone mapping to maintain link integrity during severe power-line disturbances such as motor startup transients, arc faults, or broadband EMI. This mode is automatically engaged under poor channel conditions and is validated for operation across the full –40°C to +105°C range.

Is the MAX2982GCD/V+ qualified for automotive applications, and what standard does it meet?

Yes, the MAX2982GCD/V+ is qualified to AEC-Q100-REV-G Grade 2 standards (-40°C to +105°C), confirming its suitability for automotive powertrain and chassis applications where vibration, thermal cycling, and electrical noise resilience are critical. This qualification covers stress testing for human body model ESD, latch-up, thermal shock, and high-temperature operating life - validating reliability beyond standard industrial requirements. The device's integrated temperature sensor and robust ROBO mode further support automotive use in battery management and ADAS subsystems.