Analog Devices Inc./Maxim Integrated MAX11216EUG+

Overview

MAX11216EUG+ from Maxim Integrated is a 24-bit delta-sigma analog-to-digital converter with integrated programmable gain amplifier (PGA), delivering 140dB SNR at ultra-low 10mW power dissipation, 64ksps maximum sample rate, and ±1.8V split-supply operation - enabling precision DC/AC measurements in seismic data acquisition and portable high-accuracy sensor systems.

For engineers reviewing the MAX11216EUG+ datasheet, MAX11216EUG+ pinout, MAX11216EUG+ application, or MAX11216EUG+ equivalent, this page provides verified technical context, real-world design meaning for key specs (e.g., 6.5nV/√Hz PGA noise, 4ppm INL max, SINC+FIR+IIR filter architecture), and validated alternative options for instrumentation-grade ADC selection.

Technical Context

The MAX11216EUG+ implements a multi-stage digital filter path comprising configurable SINC, FIR, and IIR blocks, supporting linear or minimum-phase FIR responses and programmable highpass filtering down to 0.000375×fDATA. Its modulator operates at 4.096MHz sampling rate with selectable continuous or single-cycle conversion modes.

It integrates a 6.5nV/√Hz noise PGA with seven discrete gain settings (1x–128x), optional input buffers for high-impedance source isolation, and three general-purpose I/Os. Calibration support includes SPI- and ADC-based self- and system offset/gain calibration registers.

Key Specifications

Pinout & Package

MAX11216EUG+ is housed in a 24-pin TSSOP package (4.4mm × 7.8mm, 0.65mm pitch), optimized for space-constrained PCB layouts while maintaining thermal performance (θJA = 72°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision delta-sigma ADC applications.

Compared with ADS1282IPWR and AD7177-2BRUZ, the MAX11216EUG+ uniquely combines 64ksps throughput, 140dB SNR, integrated PGA, and programmable highpass filtering in a compact 24-pin TSSOP - making it optimal for portable, battery-sensitive instrumentation requiring both speed and precision.

Availability

MAX11216EUG+ is available at Aetrix Electronics and suitable for seismic data acquisition, scientific instrumentation, high-precision portable sensors, medical equipment, and automated test equipment requiring stable component supply and long-term production continuity.

Supply support for MAX11216EUG+ 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 instrumentation applications.

The MAX11216EUG+ belongs to Maxim's high-accuracy delta-sigma ADC product line, engineered specifically for applications requiring ultra-low noise, exceptional linearity, and flexible digital filtering in resource-constrained environments.

FAQ

What is the maximum sample rate supported by the MAX11216EUG+?

The MAX11216EUG+ supports a maximum sample rate of 64ksps in continuous conversion mode. This rate is achievable with appropriate digital filter configuration (e.g., SINC filter) and external clock frequency (8.192MHz). At higher data rates, SNR decreases predictably - e.g., 127dB at 500sps - allowing trade-offs between speed and resolution based on application needs. The MAX11216EUG+ also supports programmable FIR filter data rates from 125sps to 16ksps.

Does the MAX11216EUG+ include an integrated programmable gain amplifier?

Yes, the MAX11216EUG+ integrates a low-noise programmable gain amplifier (PGA) with seven discrete gain settings: 1x, 2x, 4x, 8x, 16x, 32x, 64x, and 128x. Its input-referred noise is specified at 6.5nV/√Hz, and it supports both buffered and bypass input paths. The PGA is fully configurable via SPI registers and works in conjunction with the ADC's digital filters to maintain signal integrity across all gain ranges - a key feature distinguishing the MAX11216EUG+ from many competing 24-bit ADCs.

What power supply configurations does the MAX11216EUG+ support?

The MAX11216EUG+ supports two analog supply configurations: single supply (2.7V to 3.6V between AVDD and AVSS) or split supply (±1.8V, i.e., AVDD = +1.8V, AVSS = –1.8V). This allows the analog input to be sampled below ground - essential for bipolar sensor interfaces. The digital supply DVDD operates independently from 2.0V to 3.6V, enabling interoperability with 2.5V, 3.0V, or 3.3V logic systems. Total power dissipation remains at 10mW under typical conditions.

How does the MAX11216EUG+ handle calibration for offset and gain errors?

The MAX11216EUG+ provides dedicated on-chip calibration registers for both self-calibration and system-level calibration. It includes separate SPI and ADC path registers for offset (SOC_SPI, SOC_ADC) and gain (SGC_SPI, SGC_ADC), as well as self-calibration variants (SCOC_SPI, SCGC_ADC). These registers allow factory-trimmed or field-applied corrections without external components. Calibration can be triggered via SPI commands or hardware pins, and results are retained across power cycles when stored in nonvolatile memory externally.

What digital filter options are available on the MAX11216EUG+?

The MAX11216EUG+ offers a flexible digital filter architecture combining SINC, FIR, and IIR blocks. Users can select SINC-only, FIR-only (with linear or minimum-phase response), or cascaded SINC+FIR configurations. FIR filter passband ripple is ±0.003dB, bandwidth is 0.413×fDATA, and highpass corner is programmable from 0.000375×fDATA to 0.1×fDATA. Filter selection and parameters are configured via SPI-accessible control registers, enabling real-time adaptation to changing signal conditions.