Analog Devices Inc./Maxim Integrated MAX11210EEE+T

Overview

MAX11210EEE+T from Maxim Integrated is a 24-bit, single-channel, ultra-low-power delta-sigma ADC with four SPI-controllable GPIOs and programmable gain (1–16). It delivers 20.9-bit noise-free resolution at 10sps, <300µA total operating current, and >100dB 50Hz/60Hz line-noise rejection-optimized for high-precision sensor measurement in 4–20mA industrial loops.

For engineers reviewing the MAX11210EEE+T datasheet, MAX11210EEE+T pinout, MAX11210EEE+T application, or MAX11210EEE+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply support for industrial instrumentation, portable weighing systems, and battery-powered sensor nodes.

Technical Context

The MAX11210EEE+T implements a third-order delta-sigma modulator with SINC4 digital filtering, supporting both continuous and zero-latency single-cycle conversion modes. Its internal oscillator operates at 2.4576MHz (LINEF = 0) or 2.048MHz (LINEF = 1), enabling configurable data rates from 0.833sps to 480sps with guaranteed 50Hz/60Hz rejection up to 144dB at low speeds.

It integrates signal and reference input buffers (enabling use with high-impedance transducers), on-demand self- and system calibration (offset/gain), and programmable digital gain (1–16) - exclusive to the MAX11210 variant - allowing input range scaling without external amplification while preserving 24-bit ENOB integrity.

Key Specifications

Pinout & Package

MAX11210EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.635mm pitch), compatible with standard surface-mount assembly and reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-resolution, low-power delta-sigma ADC applications.

Compared with ADS124S08IPW and AD7172-2BRUZ, the MAX11210EEE+T uniquely combines ultra-low power (<300µA), four GPIOs for hardware mux control, and digital gain - making it optimal for compact, battery-constrained sensor nodes where firmware overhead and PCB area must be minimized.

Availability

MAX11210EEE+T is available at Aetrix Electronics and suitable for industrial 4–20mA transmitters, portable weigh scales, and battery-powered environmental sensors requiring stable component supply and long-term production continuity.

Supply support for MAX11210EEE+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 automotive applications, emphasizing low power, high accuracy, and integration.

The MAX11200/MAX11210 family targets ultra-low-power, high-resolution data acquisition in space- and energy-constrained systems - specifically engineered for sensor front-ends in industrial process control and portable instrumentation.

FAQ

What is the maximum data rate achievable with the MAX11210EEE+T in single-cycle mode?

The MAX11210EEE+T supports up to 120sps in single-cycle conversion mode when LINEF = 0 (2.4576MHz internal oscillator) and up to 100sps when LINEF = 1 (2.048MHz oscillator). This zero-latency mode outputs one valid 24-bit result per conversion cycle without pipeline delay - critical for real-time threshold detection in safety-critical sensor systems. The MAX11210EEE+T does not support higher rates in this mode; continuous mode offers up to 480sps but introduces three-cycle latency.

Does the MAX11210EEE+T require external components for its internal oscillator to function?

No, the MAX11210EEE+T includes a factory-trimmed internal oscillator that operates at either 2.4576MHz or 2.048MHz depending on the LINEF bit setting - requiring no external crystals, capacitors, or resistors. This simplifies BOM and layout while ensuring guaranteed 50Hz/60Hz rejection performance. External clock input (pin 15) is optional and only needed for simultaneous 50Hz/60Hz rejection using 2.25275MHz, or for custom timing synchronization. The MAX11210EEE+T achieves full specification compliance with internal clock alone.

How does the programmable digital gain in the MAX11210EEE+T differ from analog PGA gain?

The MAX11210EEE+T's digital gain (1–16×) scales the ADC's effective input range *after* modulation but *before* digital filtering - preserving full 24-bit ENOB and noise floor integrity across all gains. Unlike analog PGAs, it introduces no additional thermal noise, offset drift, or nonlinearity; gain error is limited to the ADC's inherent ±10ppm INL. This allows direct connection of low-output sensors (e.g., 10mV full-scale load cells) without analog amplification stages, reducing component count and board area. The MAX11210EEE+T gain is configured via CTRL3 register bits DGAIN_[2:0].

Can the MAX11210EEE+T operate with separate analog and digital supplies?

Yes, the MAX11210EEE+T features independent AVDD (2.7–3.6V) and DVDD (1.7–3.6V) supplies, enabling true analog-digital domain isolation. This allows optimization - e.g., powering the analog modulator from a clean 3.3V LDO while running the SPI interface and GPIOs from a shared 1.8V logic rail. Separate supplies reduce digital switching noise coupling into the analog path, directly improving measured SNR and 24-bit linearity. The MAX11210EEE+T specifies PSRR >90dB for DVDD and >80dB for AVDD, validating this architecture's effectiveness.

What calibration options does the MAX11210EEE+T provide, and how long do they take?

The MAX11210EEE+T offers three calibration levels: (1) On-demand self-calibration (200ms), correcting internal offset/gain drift; (2) System calibration (100ms each for zero/full-scale), using user-applied external references; and (3) SPI-register programming for custom offset (±VREF/4 range) and gain (0.5–1.5×). All calibrations write to dedicated on-chip registers (SCOC, SCGC, SOC, SGC) and persist until overwritten. The MAX11210EEE+T powers up with calibration disabled - full-scale input yields only 60% digital range until calibration is performed.