Analog Devices Inc./Maxim Integrated MAX11127ATI+T

Overview

MAX11127ATI+T from Analog Devices is a 10-bit, 1 Msps, 8-channel SAR analog-to-digital converter with external reference support, 1.5 MHz full-linear bandwidth, and integrated SampleSet™ channel sequencing. It operates from 2.35V to 3.6V, consumes 5.4 mW at full speed, and targets high-speed data acquisition in space-constrained, battery-powered systems.

For engineers reviewing the MAX11127ATI+T datasheet, MAX11127ATI+T pinout, MAX11127ATI+T application, or MAX11127ATI+T equivalent, this page delivers verified specifications, real-world timing behavior, differential input configuration options, FIFO-based burst sampling capability, and validated alternative parts for multichannel industrial sensing and closed-loop control designs.

Technical Context

The MAX11127ATI+T implements a successive-approximation register (SAR) architecture with dual clock modes: internal (enabling FIFO buffering and on-chip averaging) and external (supporting SampleSet™ programmable channel sequencing). Its analog front-end supports single-ended, pseudo-differential, and fully differential inputs across all 8 channels, with software-selectable bipolar ranges (±VREF+/2 or ±VREF+).

It features a 16 MHz, 3-wire SPI-/QSPI-/MICROWIRE-compatible serial interface, 16-entry FIFO, AutoShutdown™ with 2 µA full-shutdown current, and guaranteed ±0.4 LSB INL/±0.4 LSB DNL over –40°C to +125°C. The device uses an external differential reference (1 V to VDD) and achieves 61.7 dB SINAD at 250 kHz input frequency.

Key Specifications

Pinout & Package

MAX11127ATI+T is housed in a 28-pin, 5 mm × 5 mm TQFN-EP package with exposed pad (Package Code T2855+3), optimized for thermal performance and PCB area efficiency.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, multichannel SAR ADC applications.

Compared with MAX11125ATI+T, MAX11127ATI+T trades 2 bits of resolution for 15% lower power and identical timing flexibility; versus ADS8686SIPWR, it offers superior real-time responsiveness via SampleSet and FIFO but at lower resolution-making it optimal for deterministic control loops over static logging.

Availability

MAX11127ATI+T is available at Aetrix Electronics and suitable for industrial motor control, portable medical sensors, automotive battery monitoring, and high-speed closed-loop testing requiring stable component supply and long-term production continuity.

Supply support for MAX11127ATI+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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The MAX11120–MAX11128 family was designed to deliver high-speed, low-power, multichannel data acquisition in compact form factors-specifically targeting space- and power-constrained embedded systems needing deterministic sampling and minimal host processor load.

FAQ

What is the maximum sampling rate of the MAX11127ATI+T, and how is it achieved?

The MAX11127ATI+T achieves a maximum sampling rate of 1 Msps using either its internal clock (5.9 µs conversion time) or external 16 MHz SCLK (1000 ns conversion time). This rate is sustained across all 8 channels in scan mode, with no pipeline delay-enabling true real-time acquisition for control-loop applications. The device guarantees this performance over –40°C to +125°C with full 10-bit linearity.

Does the MAX11127ATI+T support differential input configurations, and how are they implemented?

Yes, the MAX11127ATI+T supports fully differential, pseudo-differential, and single-ended analog inputs across all 8 channels. Fully differential pairs use AINx/AINy combinations referenced to REF−; pseudo-differential mode uses one common input (e.g., AIN0 as reference for AIN1–AIN7); configuration is controlled via internal registers. This eliminates external op-amp circuitry for common-mode noise rejection in motor current sensing.

How does the SampleSet™ feature reduce microcontroller overhead in multichannel systems?

SampleSet™ allows the MAX11127ATI+T to execute user-defined, up to 256-step channel sequences autonomously-without CPU intervention. For example, a sequence can alternate between high-frequency current sampling (every 1 µs) and low-frequency temperature reads (every 10 ms), freeing the MCU for computation or sleep. This cuts serial interface traffic by >90% compared to polled acquisition.

What power-saving modes does the MAX11127ATI+T offer, and what are their current draws?

The MAX11127ATI+T offers AutoStandby (1.6–2.6 mW at 1 Msps) and Full AutoShutdown (2.1–4.5 µW), both activated automatically after conversion inactivity. In full shutdown, supply current drops to 2 µA-enabling multi-year battery life in wireless sensor nodes. Wake-up occurs in <1 µs upon CNVST or SCLK activity, preserving system responsiveness.

Is the MAX11127ATI+T pin-compatible with other members of the MAX11120–MAX11128 family?

Yes, MAX11127ATI+T shares identical 28-pin TQFN-EP pinout and footprint with MAX11125ATI+T (12-bit) and MAX11124ATI+T (10-bit, 4-channel variant), enabling drop-in resolution upgrades or channel-count optimization without PCB redesign. All share identical power, interface, and timing characteristics-simplifying design reuse and BOM rationalization.