Analog Devices Inc./Maxim Integrated MAX11635EVKIT#

Overview

MAX11635EVKIT# from Maxim Integrated is an evaluation kit designed to accelerate development with the MAX11635 - a 12-bit, 300ksps serial ADC featuring true differential track/hold, internal 2.5V reference, 4-channel single-ended / 2-channel differential input, and SPI/QSPI/MICROWIRE-compatible interface operating from 2.7V–3.6V supply. It supports system-level validation of precision analog acquisition in industrial monitoring and patient instrumentation.

For engineers reviewing the MAX11635EVKIT# datasheet, MAX11635EVKIT# pinout, MAX11635EVKIT# application, or MAX11635EVKIT# equivalent, this kit enables rapid characterization of conversion accuracy (±1 LSB INL/DNL), FIFO-driven burst sampling, AutoShutdown™ power management, and external clock synchronization up to 10MHz - critical for embedded data-logging and real-time control prototyping.

Technical Context

The MAX11635EVKIT# provides full hardware and software support for evaluating the MAX11635 ADC's SAR architecture, including its on-chip 16-entry FIFO, scan mode, internal averaging, and configurable clock modes (00–11). It interfaces directly with host microcontrollers via a 3-wire SPI-compatible bus and supports both unipolar (0–VREF) and bipolar (±VREF/2) differential input ranges.

Kit functionality includes jumper-selectable reference source (internal 2.5V or external), CNVST-triggered or internally timed conversions, and EOC-synchronized readout. All signal paths are impedance-matched and decoupled per Maxim's layout guidelines, enabling accurate measurement of dynamic performance metrics: SINAD = 71dB, SFDR = 81dBc, and THD = –80dBc at 30kHz input.

Key Specifications

Availability

MAX11635EVKIT# is available at Aetrix Electronics and suitable for industrial control systems, medical patient monitors, and portable data loggers requiring stable component supply and fast-turn evaluation support.

Supply support for MAX11635EVKIT# 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX11635EVKIT# belongs to Maxim's precision data-acquisition evaluation platform family, engineered to simplify validation of low-power, multichannel ADCs in noise-sensitive, space-constrained embedded systems.

FAQ

What is the primary function of the MAX11635EVKIT#?

The MAX11635EVKIT# is a fully assembled and tested evaluation platform for the MAX11635 12-bit, 300ksps ADC. It enables engineers to validate key performance parameters-including INL/DNL (±1 LSB), FIFO operation, differential input linearity, and SPI interface timing-without custom PCB design. The kit includes firmware, GUI software, and documentation to accelerate prototyping of precision analog front-ends using the MAX11635.

Does the MAX11635EVKIT# support both internal and external reference configurations for the MAX11635?

Yes, the MAX11635EVKIT# supports both reference modes. It routes the MAX11635's internal 2.500V reference to the analog input path by default, but includes jumpers to disconnect it and accept an external reference applied to the REF+ pin (1.0V to VDD + 50mV). The REF– pin is tied to ground or configurable as AIN6, per MAX11635's pin mapping.

Can the MAX11635EVKIT# be used to evaluate the MAX11635's AutoShutdown™ feature?

Yes, the MAX11635EVKIT# fully supports AutoShutdown™ evaluation. When the MAX11635 enters shutdown (via setup register bit), the kit's power monitoring circuitry confirms current drops to ≤5µA (typical), matching the datasheet specification. The GUI software allows triggering shutdown sequences and measuring wake-up latency (65µs for internal reference power-up).

What clock modes of the MAX11635 are accessible through the MAX11635EVKIT#?

All four clock modes (00–11) defined in the MAX11635 datasheet are supported: mode 00 (CNVST-triggered internal timing), mode 01 (single-shot CNVST), mode 10 (serial-register-initiated internal timing), and mode 11 (externally clocked at up to 4.8MHz for 300ksps). The kit's header pins expose CNVST, SCLK, CS, DIN, DOUT, and EOC for direct oscilloscope probing and logic analyzer capture.

Is the MAX11635EVKIT# compatible with standard USB-to-SPI host adapters?

No - the MAX11635EVKIT# requires connection to a Windows PC via its included USB-based controller board (MAXUSB), which implements the precise timing and voltage-level translation needed for reliable MAX11635 communication. Generic USB-to-SPI adapters lack the deterministic timing, 3.3V I/O level compliance, and EOC synchronization required to drive the MAX11635's serial interface correctly.