Analog Devices Inc./Maxim Integrated MAX1082BCUE

Overview

MAX1082BCUE from Maxim Integrated is a 10-bit, 4-channel serial analog-to-digital converter (ADC) with integrated track/hold, multiplexer, and internal +2.5V reference. It operates from a single +4.5V to +5.5V supply, delivers 400ksps sampling rate, supports software-configurable unipolar/bipolar and single-ended/pseudo-differential inputs, and targets portable data acquisition systems requiring low power and compact footprint.

For engineers reviewing the MAX1082BCUE datasheet, MAX1082BCUE pinout, MAX1082BCUE application, or MAX1082BCUE equivalent, key selection considerations include its 400ksps throughput at 2.5mA supply current, TSSOP-16 package compatibility with space-constrained PCBs, SPI/QSPI/MICROWIRE interface readiness, and temperature range (0°C to +70°C) suitable for industrial and medical instrumentation.

Technical Context

The MAX1082BCUE implements successive-approximation register (SAR) architecture with an on-chip track/hold amplifier and 4-channel analog multiplexer. Its conversion timing is fully clocked by an external serial interface clock (up to 6.4MHz), enabling precise synchronization with host controllers.

It features four programmable power modes-normal, reduced-power (1.3mA), fast power-down (0.9mA), and full power-down (2µA)-with automatic wake-up via serial interface activity. The internal reference buffer provides ±1.5% adjustability and supports external reference input from 1V to VDD.

Key Specifications

Pinout & Package

MAX1082BCUE is housed in a 16-pin Thin Shrink Small Outline Package (TSSOP) with 0.65mm pitch, optimized for automated assembly and thermal performance in compact layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and MAX11131AUT+, the MAX1082BCUE offers optimal balance of 10-bit accuracy, 400ksps speed, integrated reference, and commercial-temp TSSOP packaging - making it ideal for cost-sensitive, space-constrained, 5V-based portable instrumentation where 12-bit resolution is unnecessary.

Availability

MAX1082BCUE is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-powered instruments requiring stable component supply and long-term production continuity.

Supply support for MAX1082BCUE 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, medical, and communications applications.

The MAX1082 family delivers highly integrated, low-power serial ADCs targeting portable and embedded systems where board space, power budget, and interface simplicity are critical constraints.

FAQ

What is the maximum sampling rate of the MAX1082BCUE?

The MAX1082BCUE achieves a maximum sampling rate of 400ksps under typical conditions (VDD = +5V, fSCLK = 6.4MHz). This rate is sustained across its full operating temperature range (0°C to +70°C) and supports continuous conversion without performance degradation. The actual achievable rate depends on serial clock frequency and interface timing margins - the device requires 16 SCLK cycles per conversion.

Does the MAX1082BCUE require an external reference voltage?

No, the MAX1082BCUE includes an internal +2.5V reference with ±1.5% initial accuracy and ±15ppm/°C temperature coefficient. An external reference (1V to VDD) may be used by disabling the internal buffer via the REFADJ pin, but it is not required. The internal reference simplifies design, reduces component count, and maintains specified DC accuracy without external trimming.

How does the MAX1082BCUE handle power management?

The MAX1082BCUE provides four distinct power modes: normal (2.5mA), reduced-power (1.3mA), fast power-down (0.9mA), and full power-down (2µA). These are selected via software control bits in the serial command byte. Additionally, a hard-wired SHDN pin allows hardware-initiated shutdown. Serial interface activity automatically wakes the device from any power-down state, eliminating need for separate wake-up circuitry.

What input configurations does the MAX1082BCUE support?

The MAX1082BCUE supports both unipolar and bipolar input ranges, and either single-ended (four independent CHx-to-COM inputs) or pseudo-differential (CH0–CH1 or CH2–CH3 pairs) operation. Configuration is selected dynamically via the 8-bit control word sent to DIN. In pseudo-differential mode, only the positive input is sampled; the negative input must remain stable within ±0.5LSB during conversion to maintain accuracy.

Is the MAX1082BCUE pin-compatible with other devices in the MAX1082/MAX1083 family?

Yes, all MAX1082 and MAX1083 variants - including MAX1082ACUE, MAX1082BCUE, MAX1082AEUE, MAX1083BCUE, etc. - share identical 16-pin TSSOP pinouts and electrical interfaces. Differences lie solely in temperature grade (e.g., 0°C to +70°C for MAX1082BCUE) and supply voltage range (+4.5V to +5.5V for MAX1082 vs. +2.7V to +3.6V for MAX1083), not pin function or layout.