Analog Devices Inc./Maxim Integrated MAX1403EVL11

Overview

MAX1403EVL11 from Maxim Integrated is a complete, Windows 95/98-compatible evaluation system for the MAX1403 16-bit multichannel sigma-delta ADC, comprising the MAX1403EVKIT hardware and a preconfigured 68HC11 microcontroller module (68L11DMODULE) with Rev. 1.1 ROM. It supports up to 8192-sample full-speed acquisition, SINC1/SINC3 digital filtering, and on-board 1.2V reference (MAX6520), enabling rapid validation of precision analog front-ends in industrial sensor and data-acquisition applications.

For engineers reviewing the MAX1403EVL11 datasheet, MAX1403EVL11 pinout, MAX1403EVL11 application, or MAX1403EVL11 equivalent, this page delivers verified hardware configuration details, jumper-controlled calibration modes (CALOFF/CALGAIN), software-supported transfer function register programming (TF1–TF3), and dual-device evaluation capability for both MAX1403 and MAX1401 - critical for transducer interface design, metrology prototyping, and low-power multichannel ADC selection.

Technical Context

The MAX1403EVL11 integrates a fully assembled 3" × 4" PCB (MAX1403EVKIT) with a Motorola MC68L11D0FN2-based 68HC11 module, communicating via SPI over RS-232 using Borland C++/68HC11 assembly firmware (KIT1403.L11). It operates from +5V to +12V DC and requires Rev. 1.1 ROM for correct INT-driven sampling and FSYNC-controlled measurement triggering.

Hardware features include on-board anti-aliasing RC filters (100Ω + 100pF per channel), programmable input buffering, transducer burnout current sources (0.1µA), and jumper-selectable reference (1.2V MAX6520) or external VREF. The system evaluates both MAX1403 (with DS0/DS1 digital inputs and OUT1/OUT2 current sources) and MAX1401 (via JU6/JU7 reconfiguration).

Key Specifications

Availability

MAX1403EVL11 is available at Aetrix Electronics and suitable for industrial sensor interface validation, precision metrology prototyping, and multichannel data-acquisition system development requiring stable component supply and full software/hardware integration support.

Supply support for MAX1403EVL11 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 MAX1403EVL11 belongs to Maxim's data-acquisition evaluation platform family, designed specifically to accelerate time-to-test for sigma-delta ADCs used in high-resolution sensor signal chains, process monitoring, and portable instrumentation.

FAQ

What is the MAX1403EVL11 and how does it differ from the MAX1403EVKIT?

The MAX1403EVL11 is the complete evaluation system that bundles the MAX1403EVKIT hardware board with the Maxim 68HC11 microcontroller module (68L11DMODULE) preloaded with Rev. 1.1 ROM and KIT1403.L11 firmware. In contrast, the MAX1403EVKIT alone is the bare PCB without the µC module - requiring user-provided timing, control, and software. Only the MAX1403EVL11 includes Windows 95/98 software (MAX1403.EXE), source code (KIT1403.ASM, MAX1403.CPP), and full calibration tool support.

Does the MAX1403EVL11 support both MAX1403 and MAX1401 evaluation?

Yes, the MAX1403EVL11 supports evaluation of both the MAX1403 and MAX1401. To evaluate the MAX1401, users must short jumpers JU6 and JU7 per the MAX1403 EV System documentation. This reconfigures pins 5–8 to expose the internal multiplexer output instead of DS0/DS1 digital inputs and OUT1/OUT2 current sources - matching the MAX1401's pin functionality. The same software and hardware platform is reused without modification.

What are the required power and interface connections for the MAX1403EVL11?

The MAX1403EVL11 requires a +5V to +12V DC power supply (30–50mA) connected to terminal block J2 on the 68HC11 module, observing polarity markings. Communication is via RS-232: a straight-through DB9 male-to-female cable connects the host PC's COM port to J3 on the 68HC11 module. The EV kit software verifies connection using modem status lines (CTS/DSR/DCD) and downloads KIT1403.L11 automatically upon startup.

What calibration capabilities does the MAX1403EVL11 provide?

The MAX1403EVL11 provides dual-point offset/gain calibration using dedicated CALOFF+/- and CALGAIN+/- inputs. The software assumes CALOFF+/- are grounded (0V) and CALGAIN+/- are tied to REFIN+/- (VREF), enabling linear interpolation between those endpoints. Calibration affects only displayed voltage values - not raw A/D codes - and is disabled if either channel returns code 0 or 262143. Buffer mode requires disconnecting CALOFF+/- from GND and connecting them to REFIN+ to stay within input range.

Can the MAX1403EVL11 operate without the included 68HC11 module?

No - the MAX1403EVL11 is defined as the complete system including the 68HC11 module (68L11DMODULE). The MAX1403EVKIT board alone lacks timing generation, interrupt handling, SPI master logic, and firmware execution capability. Without the 68HC11 module and its Rev. 1.1 ROM, the MAX1403EVL11 cannot initialize, communicate with the host PC, or perform autonomous sampling - making the µC module an inseparable, orderable component of the MAX1403EVL11 system.