Analog Devices Inc./Maxim Integrated MAX11060GUU+

Overview

The MAX11060GUU+ from Maxim Integrated is a 16-bit, 4-channel, simultaneous-sampling sigma-delta analog-to-digital converter (ADC) with cascading capability for up to 32 synchronized channels. It delivers 94.5dB SNR at 16ksps, supports ±2.2V differential input range using internal or external reference, and operates from a single +3.0V to +3.6V analog supply. It is designed for high-accuracy power-monitoring systems requiring phase-aligned sampling across multiple inputs.

For engineers reviewing the MAX11060GUU+ datasheet, MAX11060GUU+ pinout, MAX11060GUU+ application, or MAX11060GUU+ equivalent, key selection considerations include its programmable output data rate (0.25–64ksps), ±6V overvoltage-protected analog inputs, 0.065% resolution in data rate tuning, and SPI/QSPI/MICROWIRE-compatible 4-wire serial interface with daisy-chain support.

Technical Context

The MAX11060GUU+ integrates four independent sigma-delta modulators, each feeding a digital decimation filter with programmable output data rate and channel-specific sampling-phase delay (0–333μs in 1.33μs steps). Its internal crystal oscillator (24.576MHz) or external clock drives a fixed ×8 modulator clock divider, enabling precise timing control for synchronized multi-device operation via SYNC and cascade signals.

It features fully differential analog inputs with ±6V fault-tolerant protection, on-chip buffered reference (2.5V ±50ppm/°C drift), and dual-supply architecture: AVDD (3.0–3.6V) for analog circuitry and DVDD (2.7–VAVDD) for digital logic. The device achieves 0.25% error over 1000:1 dynamic range and maintains channel-to-channel gain matching within 0.03%FS.

Key Specifications

Pinout & Package

MAX11060GUU+ is housed in a 38-pin TSSOP package with exposed pad (RoHS-compliant, lead-free), optimized for thermal performance and PCB space efficiency in high-density industrial modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-channel simultaneous-sampling ADC applications.

Compared with MAX11040KGUU+, the MAX11060GUU+ trades resolution for lower latency and higher effective throughput at 16ksps; compared with AD7606C-16, it offers integrated synchronization and cascading at the cost of maximum sample rate - making it optimal for deterministic, phase-critical power monitoring where channel count scalability matters more than raw speed.

Availability

MAX11060GUU+ is available at Aetrix Electronics and suitable for power-protection relay equipment, multiphase power systems, and industrial data-acquisition systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX11060GUU+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications applications.

The MAX11060GUU+ belongs to Maxim's precision sigma-delta ADC product line, engineered specifically for energy measurement and power-system monitoring - emphasizing simultaneous sampling, robust fault tolerance, and seamless multi-device synchronization.

FAQ

What is the maximum number of MAX11060GUU+ devices that can be cascaded?

The MAX11060GUU+ supports cascading up to eight devices using the CASCIN/CASCOUT interface, enabling synchronized sampling across 32 analog input channels. This configuration uses a single SPI bus with one chip select, reducing host interface complexity and ensuring deterministic timing alignment across all devices - a capability confirmed in the functional diagram and ordering information section of the official datasheet.

Does the MAX11060GUU+ support both internal and external reference modes?

Yes, the MAX11060GUU+ supports both internal and external reference configurations via the REFIO pin. In internal mode, REFIO outputs a nominal 2.5V reference (±50ppm/°C drift); in external mode, it accepts 2.3V–2.7V reference sources. This flexibility allows designers to optimize between system-level accuracy (external precision reference) and component count reduction (internal reference), as specified in the Electrical Characteristics table.

What is the purpose of the SYNC input on the MAX11060GUU+?

The SYNC input on the MAX11060GUU+ provides periodic alignment of conversion timing across multiple devices. A falling edge on SYNC synchronizes the sampling instant of all connected MAX11060GUU+ units - essential for phase-coherent measurements in multiphase power systems. This feature is explicitly documented in the General Description and Pin Description sections, and enables synchronization even when devices use independent crystal oscillators.

How does the MAX11060GUU+ handle overvoltage conditions on analog inputs?

The MAX11060GUU+ provides ±6V overvoltage protection on all AIN+ and AIN- pins without damage, as verified in the Absolute Maximum Ratings and Analog Inputs sections. Input fault thresholds are set at ±2.25V to ±2.65V relative to AGND, and the FAULT pin asserts low within 2.5µs of threshold violation. This eliminates the need for external protection components in industrial environments with high-energy transients.

What serial interface standards is the MAX11060GUU+ compatible with?

The MAX11060GUU+ is compatible with SPI, QSPI™, MICROWIRE®, and DSP-compatible 4-wire serial interfaces, as stated in the General Description. Its SCLK idle-high polarity (CPOL = 1) and data sampling on SCLK falling edge (for DIN) and rising edge (for DOUT) conform to standard SPI Mode 3 timing - enabling direct interfacing with common microcontrollers and DSPs without protocol translation.