Analog Devices Inc./Maxim Integrated MAX1362EUB+T

Overview

The MAX1362EUB+T from Maxim Integrated is a 10-bit, 4-channel, I²C-compatible analog-to-digital converter with integrated programmable window comparator, SMBus alert response, and 4.096V internal reference. It operates from a single 4.5V to 5.5V supply, delivers up to 150ksps in monitor mode, and consumes only 436µA at that rate. It is used for autonomous system monitoring in high-reliability power supplies and server health management.

For engineers reviewing the MAX1362EUB+T datasheet, MAX1362EUB+T pinout, MAX1362EUB+T application, or MAX1362EUB+T equivalent, key selection criteria include its 4.096V internal reference voltage, ±1 LSB INL/DNL accuracy, 10-pin µMAX package, SMBus alert compatibility, and support for unipolar/bipolar and single-ended/differential input configurations.

Technical Context

The MAX1362EUB+T implements successive-approximation ADC architecture with fully differential track-and-hold circuitry and an integrated 4.096V bandgap reference. Its monitor mode operates autonomously using programmable upper/lower trip thresholds stored in on-chip registers, asserting an open-drain INT signal without host intervention.

It supports three I²C speeds - standard (100kHz), fast (400kHz), and high-speed (1.7MHz) - with four selectable slave addresses via A0 pin. Conversion clocking is configurable as internal (2.8MHz oscillator) or external (SCL-driven), enabling throughput of 94.4ksps while reading results or 150ksps in interrupt-only monitor mode.

Key Specifications

Pinout & Package

MAX1362EUB+T is housed in a 10-pin µMAX® package (3mm × 3mm, 0.5mm pitch), thermally enhanced with exposed pad, suitable for space-constrained PCB layouts in server and embedded power systems.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar system-monitor ADC applications.

Compared with MAX1362EUB+T, MAX1364EUB+ offers higher resolution in identical form factor but lacks cost-sensitive 10-bit optimization, while ADS7828IPW provides more channels and SPI flexibility but removes autonomous monitoring capability entirely - making MAX1362EUB+T uniquely suited for interrupt-driven, low-power, I²C-based system supervision.

Availability

MAX1362EUB+T is available at Aetrix Electronics and suitable for server power-rail monitoring, industrial DC-DC converter supervision, and medical power-supply health check applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for MAX1362EUB+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 demanding industrial, computing, and medical applications.

The MAX1361/MAX1362 product line was engineered specifically for autonomous, low-power system monitoring - integrating reference, comparator, interrupt logic, and I²C interface into a single 10-pin µMAX package to simplify power-supply telemetry design.

FAQ

What is the internal reference voltage of the MAX1362EUB+T?

The MAX1362EUB+T features a factory-trimmed 4.096V internal reference with ±0.5% initial accuracy and 25ppm/°C temperature coefficient. This reference can be enabled at the AIN3/VREF pin via SEL[1:0] = 11 in the setup byte and must be decoupled with a 0.1µF capacitor to GND. It is optimized for ratiometric measurements in 5V systems and eliminates the need for an external reference in most supervision applications.

Does the MAX1362EUB+T support differential input mode?

Yes, the MAX1362EUB+T supports fully differential input operation on all four channels via software configuration of the SE/DIF bit in the setup byte. In differential mode, it measures the voltage difference between paired inputs (e.g., AIN0–AIN1, AIN2–AIN3/VREF) with ±VREF/2 range and two's complement output coding. Differential mode rejects common-mode noise and improves PSRR, making it ideal for noisy industrial environments.

How does the monitor mode interrupt work on the MAX1362EUB+T?

The MAX1362EUB+T monitor mode uses on-chip registers to store upper and lower trip thresholds for each channel. When any analog input exceeds these limits, the device asserts the open-drain INT pin low and updates the alarm-status register - all without host interaction. The SMBus alert response allows the controller to identify the MAX1362EUB+T as the interrupt source on a shared bus, eliminating polling overhead and enabling deterministic fault response.

What are the power consumption characteristics of the MAX1362EUB+T in different operating modes?

The MAX1362EUB+T draws 436µA at 150ksps in monitor mode, 670µA at 94.4ksps during active conversion + readback, 6µA at 1ksps, and less than 0.5µA in AutoShutdown™ power-down. These values assume 4.5V–5.5V supply and internal reference enabled. Current scales linearly with sampling rate in monitor mode and depends on clock source (internal vs. external) and reference configuration (internal vs. external).

Can the MAX1362EUB+T operate with an external reference voltage?

Yes, the MAX1362EUB+T accepts an external reference voltage from 1V to VDD applied to the AIN3/VREF pin. When configured for external reference (SEL[1:0] = 01 or 10), the device disables its internal 4.096V reference and uses the external source for full-scale scaling. The reference input requires ≤500Ω source impedance and 40µA drive capability; a 0.1µF bypass capacitor is recommended for noise immunity.