Analog Devices Inc./Maxim Integrated MAX2982GCD/V+T

Overview

MAX2982GCD/V+T 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 and DES encryption for secure communication in harsh industrial line environments.

For engineers reviewing the MAX2982GCD/V+T datasheet, MAX2982GCD/V+T pinout, MAX2982GCD/V+T application, or MAX2982GCD/V+T equivalent, this page provides verified technical context, interface timing constraints, thermal performance limits, spectral shaping capability, and real-world deployment guidance for power-line communication systems requiring robust SNR resilience and regulatory flexibility.

Technical Context

The MAX2982GCD/V+T implements a full HomePlug 1.0–compliant PHY layer with 84-carrier OFDM modulation, supporting DBPSK, DQPSK (1/2 and 3/4 FEC), and ROBO mode delivering –1dB SNR performance. Its integrated ARM946E-S™ core enables field-upgradable firmware, spectral notching, and automatic channel adaptation.

It interfaces via IEEE 802.3 MII/RMII, synchronous FIFO, UART, and 10/100 Ethernet MAC - all operating at VDD33 = 3.3V and VDD12 = 1.2V. The device includes a calibrated on-die temperature sensor (7 mV/°C, ±5°C accuracy) and advanced narrowband interference rejection circuitry for industrial EMI resilience.

Key Specifications

Pinout & Package

MAX2982GCD/V+T is housed in a 128-pin, lead-free LQFP package (14mm × 14mm, 0.4mm pitch) with exposed thermal pad. Power supply pins are distributed across multiple corners for low-impedance decoupling; DGND and AVSS are separately routed to minimize digital/analog coupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX2982GCD/V+T, MAX2981GCD/V+T requires external digital baseband and offers no encryption or firmware upgradability, while ST7580 targets metering-specific standards and lacks the industrial thermal margin and SNR resilience of the MAX2982GCD/V+T.

Availability

MAX2982GCD/V+T is available at Aetrix Electronics and suitable for industrial motor control, remote SCADA monitoring, building automation systems, and smart grid substation communications requiring stable component supply across extended temperature and long product lifecycles.

Supply support for MAX2982GCD/V+T 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 markets.

The MAX2982GCD/V+T belongs to Maxim's industrial power-line communication product line, engineered specifically for robust, secure, high-throughput data transmission over noisy AC and DC power distribution networks.

FAQ

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

The MAX2982GCD/V+T 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, spectral shaping, and DES encryption - enabling secure, high-speed (up to 14Mbps) data transmission over AC/DC power lines without requiring external baseband logic. Its role is central to establishing and maintaining reliable PLC links in industrial settings.

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

Yes, the MAX2982GCD/V+T requires an external analog front-end to drive and receive signals from the power line. The MAX2981GCD/V+T is the designated companion AFE, providing integrated line driver, receiver, AGC, and LPF/HPF filtering. The MAX2982GCD/V+T communicates with the MAX2981GCD/V+T via the 10-bit AFEDAD[0–9] bus and control signals including AFECLK, AFETXEN, and AFEREN - forming a complete, validated PLC solution.

What are the absolute maximum ratings for power supply voltages on the MAX2982GCD/V+T?

The MAX2982GCD/V+T specifies absolute maximum ratings of VDD33 to DGND = –0.3V to +4.0V, VDD12 to DGND = –0.3V to +1.5V, and AVDD to AVSS = –0.5V to +1.5V. Exceeding these may cause permanent damage. Recommended operating ranges are tighter: VDD33 = 3.0–3.6V and VDD12 = 1.14–1.26V. These margins ensure safe operation during transient events while maintaining signal integrity across digital and analog domains.

How does the ROBO mode in the MAX2982GCD/V+T improve communication reliability?

ROBO mode in the MAX2982GCD/V+T is a robust OFDM operational mode delivering –1dB SNR performance at frame error rates of 10⁻⁴. It achieves this through aggressive forward error correction and reduced symbol rate, making it uniquely suited for industrial environments with high impulse noise (e.g., motor commutation, relay switching). Unlike standard DQPSK modes, ROBO maintains link stability even when narrowband jammers or deep frequency nulls degrade channel quality - a key differentiator for mission-critical PLC deployments.

Can the MAX2982GCD/V+T operate without an external crystal oscillator?

No, the MAX2982GCD/V+T requires an external 30MHz fundamental-mode crystal connected between XIN (pin 105) and XOUT (pin 106) to generate its internal clocks. The crystal must meet load capacitance and stability specifications outlined in the datasheet; no internal RC oscillator is provided. This external reference ensures precise timing alignment between the digital baseband, AFE interface, and Ethernet MAC - essential for HomePlug 1.0 compliance and low-jitter OFDM symbol generation.