Analog Devices Inc./Maxim Integrated MAX11131EVKIT#

Overview

MAX11131EVKIT# from Maxim Integrated is an evaluation kit for the MAX11131 12-bit, 16-channel, 3Msps SAR ADC - designed to accelerate development of high-speed, low-power data acquisition systems. It supports internal/external clock modes, SampleSet programmable channel sequencing, and 16-entry FIFO operation with 1.5MHz full-linear bandwidth and 70dB SINAD at 500kHz.

For engineers reviewing the MAX11131EVKIT# datasheet, MAX11131EVKIT# pinout, MAX11131EVKIT# application, or MAX11131EVKIT# equivalent, this kit enables rapid validation of analog input configuration (single-ended/differential/pseudo-differential), SPI/QSPI/MICROWIRE interface timing, power-down behavior, and real-time multichannel sampling performance under industrial temperature conditions (-40°C to +125°C).

Technical Context

The MAX11131EVKIT# provides full hardware and firmware support for evaluating the MAX11131 ADC's dual-clock architecture: internal clock mode with integrated FIFO and averaging, and external clock mode with SampleSet technology for user-defined 256-step channel sequences. It implements all analog signal conditioning paths - including REF+/REF- differential reference routing, CNVST-triggered acquisition, and EOC-synchronized readout - with calibrated input buffers and trace-controlled PCB layout.

Kit firmware exposes register-level control of RANGE, CHAN_ID, PDIFF_COM, and AutoShutdown settings, enabling direct verification of bipolar/unipolar transfer functions, channel-to-channel offset matching (±0.5 LSB), and dynamic performance metrics (SINAD, THD, SFDR) per the MAX11131's electrical specifications across VDD = 2.35V–3.6V and OVVDD = 1.5V–3.6V supply ranges.

Key Specifications

Availability

MAX11131EVKIT# is available at Aetrix Electronics and suitable for high-speed closed-loop control, battery-powered instrumentation, medical signal acquisition, and industrial sensor interface applications requiring stable component supply and rapid prototyping capability.

Supply support for MAX11131EVKIT# 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, automotive, and medical applications.

The MAX11131EVKIT# belongs to Maxim's high-speed, low-power SAR ADC evaluation platform family - engineered specifically to validate multichannel, low-noise, energy-efficient data acquisition in space-constrained and thermally challenging environments.

FAQ

What is the primary function of the MAX11131EVKIT#?

The MAX11131EVKIT# is a fully assembled and tested evaluation platform for the MAX11131 12-bit, 16-channel, 3Msps SAR ADC. It enables engineers to verify key performance parameters - including SINAD (70dB @ 500kHz), INL (±1 LSB), FIFO operation, SampleSet sequencing, and power-down behavior - using industry-standard SPI/QSPI interfaces and calibrated analog stimulus paths. The MAX11131EVKIT# includes schematic, layout files, and firmware source code for complete design transparency.

Does the MAX11131EVKIT# support both internal and external clock modes of the MAX11131?

Yes, the MAX11131EVKIT# fully supports both internal and external clock modes of the MAX11131. In internal clock mode, it validates FIFO buffering, internal averaging, and SNR improvement on noisy signals. In external clock mode, it demonstrates SampleSet programmable channel sequencing (up to 256 steps), precise timing alignment for 48MHz SCLK, and EOC-synchronized readout. All mode transitions are controllable via included GUI and register-level commands.

Can the MAX11131EVKIT# be used to evaluate differential and pseudo-differential input configurations?

Yes, the MAX11131EVKIT# provides dedicated test points and jumpers to configure all supported input topologies: 16 single-ended channels, 8 fully differential pairs (using AIN0–AIN15), and 15 pseudo-differential channels referenced to REF-/AIN15. The board routes REF+ and REF- with proper decoupling (0.47µF) and includes matched input traces to preserve common-mode rejection and minimize crosstalk (<–88dB) as specified in the MAX11131 datasheet.

What power supply requirements does the MAX11131EVKIT# have?

The MAX11131EVKIT# operates from a single 5V USB input and internally generates the required VDD (2.35V–3.6V), OVDD (1.5V–3.6V), and analog reference rails. It includes adjustable LDOs with output monitoring, allowing users to replicate real-world supply conditions - including brown-out testing and ripple injection - while maintaining compliance with MAX11131 absolute maximum ratings (e.g., VDD to GND: –0.3V to +4V).

Is firmware and software provided with the MAX11131EVKIT#?

Yes, the MAX11131EVKIT# ships with Windows-compatible GUI software, open-source firmware (C/C++), and detailed API documentation. The software supports real-time waveform capture, FFT analysis, register read/write, channel sequencing setup, and automated test scripts for DC accuracy (INL/DNL), dynamic performance (SINAD/SFDR), and power consumption profiling - all directly tied to the MAX11131's published electrical characteristics.