Analog Devices Inc./Maxim Integrated MAX1082AEUE+T

Overview

MAX1082AEUE+T from Maxim Integrated is a 10-bit, 4-channel serial analog-to-digital converter (ADC) with internal +2.5V reference, 400ksps sampling rate, and single +4.5V to +5.5V supply operation. It integrates a track/hold circuit, 4-channel analog multiplexer, and SPI/QSPI/MICROWIRE-compatible 4-wire serial interface. Used in portable data loggers for high-accuracy voltage monitoring under industrial temperature conditions.

For engineers reviewing the MAX1082AEUE+T datasheet, MAX1082AEUE+T pinout, MAX1082AEUE+T application, or MAX1082AEUE+T equivalent, this page delivers verified electrical specs, thermal-rated performance (–40°C to +85°C), power-mode timing behavior, and real-world ADC interface constraints - all confirmed for the exact MAX1082AEUE+T variant.

Technical Context

The MAX1082AEUE+T uses successive-approximation architecture with integrated track/hold and software-configurable unipolar/bipolar, single-ended/pseudo-differential input modes. Its internal reference buffer provides ±1.5% adjustment range and ±15ppm/°C temperature coefficient, enabling stable conversions across its full –40°C to +85°C operating range.

It supports four power modes: normal (2.5mA), reduced-power (1.3mA), fast power-down (0.9mA), and full power-down (2µA). Serial interface timing is synchronized to external SCLK (up to 6.4MHz), with conversion completed in ≤2.5µs and acquisition time fixed at 400ns - both guaranteed over temperature and supply voltage.

Key Specifications

Pinout & Package

MAX1082AEUE+T is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed pad for thermal enhancement. Pin functions are validated per Maxim's official datasheet Rev 2 (12/2014).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit, multi-channel ADC applications.

Compared with ADS7822U and MAX11100ETE+, the MAX1082AEUE+T uniquely balances 10-bit accuracy, 400ksps speed, industrial temperature range, and multi-protocol serial compatibility in a drop-in TSSOP footprint - making it optimal for legacy-compatible upgrades and mixed-signal embedded systems.

Availability

MAX1082AEUE+T is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and industrial process control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX1082AEUE+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 and mixed-signal ICs for industrial, medical, and communications applications, emphasizing low-power, high-integration, and ruggedized performance.

The MAX1082/MAX1083 family was engineered for battery-powered and space-constrained systems needing reliable, multi-channel ADC functionality with minimal external components - especially where single-supply operation and internal reference stability are critical.

FAQ

What is the guaranteed operating temperature range for MAX1082AEUE+T?

The MAX1082AEUE+T is specified for continuous operation from –40°C to +85°C. This rating is validated per Maxim's datasheet Rev 2 (12/2014) and applies to all DC and AC parameters including INL (±0.5 LSB), reference voltage (2.500V ±20mV), and supply current (2.5mA typ at 400ksps). No derating is required within this range.

Does MAX1082AEUE+T support true differential input mode?

No - the MAX1082AEUE+T implements pseudo-differential input architecture. In "differential" mode, only the positive input (IN+) is sampled; the negative input (IN-) remains connected to the sampling capacitor and must stay stable within ±0.5LSB. Valid channel pairs are CH0/CH1 and CH2/CH3, but common-mode rejection is not inherent to the topology.

How does the REFADJ pin function in MAX1082AEUE+T?

The REFADJ pin on MAX1082AEUE+T adjusts the internal reference buffer output from 2.480V to 2.520V (±1.5% range) when used as a voltage divider input. To disable the buffer and use an external reference, tie REFADJ directly to VDD1. The pin has ±100mV input range and requires 0.01µF bypass capacitance for stability.

Can MAX1082AEUE+T operate with a 3.3V supply?

No - the MAX1082AEUE+T requires +4.5V to +5.5V on both VDD1 and VDD2. For 3.3V systems, use the pin-compatible MAX1083 variant (e.g., MAX1083AEUE+T), which operates from +2.7V to +3.6V and shares identical pinout, register map, and feature set - except for lower sampling rate (300ksps) and adjusted timing parameters.

What is the minimum acquisition time required before conversion starts in MAX1082AEUE+T?

The MAX1082AEUE+T requires a fixed 400ns track/hold acquisition time (tACQ), defined as the interval between the falling SCLK edge after the 8-bit control word and the start of conversion. This value is guaranteed over temperature and supply voltage and cannot be shortened - it ensures full settling of the internal sampling capacitor prior to SAR decision cycles.