Analog Devices Inc./Maxim Integrated MAX11102AUB/V+T

Overview

MAX11102AUB/V+T from Maxim Integrated is a 12-bit, dual-channel, single-ended successive approximation ADC with 2Msps throughput, 73dB SNR, and 2.2V–3.6V supply operation. It features an external reference input, 3-wire SPI-compatible serial interface, and operates across –40°C to +125°C - ideal for high-accuracy portable data acquisition in battery-powered medical and industrial sensors.

For engineers reviewing the MAX11102AUB/V+T datasheet, MAX11102AUB/V+T pinout, MAX11102AUB/V+T application, or MAX11102AUB/V+T equivalent, key selection criteria include its dual analog input MUX architecture, low 3.7mW power at 2Msps, ±1 LSB INL, 10-pin µMAX package with exposed pad, and support for 1.5V–3.6V I/O voltage scaling.

Technical Context

The MAX11102AUB/V+T implements a true successive approximation register (SAR) ADC core with integrated sample-and-hold, no pipeline delay, and dual 1:2 analog multiplexer routing AIN1/AIN2 to a shared conversion engine. Its 3-wire serial interface supports native SPI/QSPI/MICROWIRE timing without level-shifting logic.

It uses an external reference (REF pin), accepts full-scale inputs from 0V to VREF, and separates analog (VDD) and digital I/O (OVDD) supplies - enabling independent 1.5V–3.6V interface voltage control while maintaining analog accuracy via dedicated reference path and low 1.3µA power-down current.

Key Specifications

Pinout & Package

MAX11102AUB/V+T is housed in a 10-pin µMAX package (3mm × 5mm, exposed pad), optimized for thermal performance and board space efficiency in compact designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, 12-bit SAR ADC applications.

Compared with MAX11103AUB+, the MAX11102AUB/V+T trades 1 Msps speed for 30% lower power and relaxed clock requirements; versus ADS8860IDRCT, it provides integrated dual-channel sampling at 12-bit fidelity with simpler system-level integration.

Availability

MAX11102AUB/V+T is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-operated systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX11102AUB/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 demanding industrial, medical, and automotive applications.

The MAX111xx family targets ultra-low-power, high-speed data acquisition in space-constrained, battery-sensitive systems - emphasizing integration, thermal robustness, and interface flexibility without sacrificing DC or AC performance.

FAQ

What is the maximum sampling rate supported by the MAX11102AUB/V+T?

The MAX11102AUB/V+T supports a maximum throughput rate of 2 Msps, achieved with a 32 MHz SCLK and 50% duty cycle. Its conversion time is fixed at 391 ns, and acquisition time is 52 ns - enabling deterministic, low-latency sampling for closed-loop control and real-time signal analysis. This rate is confirmed in the Electrical Characteristics table for MAX11102 devices under VDD = 2.2V–3.6V and fSCLK = 32 MHz.

Does the MAX11102AUB/V+T require an external reference voltage?

Yes, the MAX11102AUB/V+T requires an external reference voltage applied to the REF pin. It accepts 1V to VDD+0.05V and uses this reference to define its full-scale input range (0V to VREF). Unlike single-channel variants that generate internal references, the dual-channel MAX11102AUB/V+T relies on external REF for optimal accuracy, noise immunity, and flexibility in precision measurement setups.

What package type is used for the MAX11102AUB/V+T?

The MAX11102AUB/V+T is packaged in a 10-pin µMAX package (3mm × 5mm) with exposed pad (EP), denoted by "AUB" in the part number and confirmed in the Ordering Information table. This thermally enhanced package supports efficient heat dissipation in high-density layouts and is RoHS-compliant, as indicated by the "+" suffix and "/V" variant marking.

Can the MAX11102AUB/V+T interface directly with a 1.8V microcontroller?

Yes, the MAX11102AUB/V+T can interface directly with a 1.8V microcontroller using its OVDD pin. By supplying 1.8V to OVDD, the CS, SCLK, and DOUT signals operate at 1.8V logic levels - meeting VIH ≥ 1.35V and VIL ≤ 0.45V thresholds. This eliminates level-shifting components and simplifies design, as explicitly stated in the "Variable I/O: 1.5V to 3.6V" feature.

What is the power consumption of the MAX11102AUB/V+T in full-power mode?

In full-power mode at 2 Msps, the MAX11102AUB/V+T consumes 3.7 mW total (2.6 mA from VDD and 0.22 mA from OVDD at VDD = 3.0V). At zero clock (standby active), it draws 1.48 mA from VDD. Its power-down current is just 1.3 µA - making it suitable for duty-cycled, energy-sensitive applications like wireless sensor nodes.