Analog Devices Inc. DC1410A-B

Overview

DC1410A-B from Analog Devices (formerly Linear Technology) is a demonstration board for the LTC2448 16-channel, 24-bit No Latency ΔΣ ADC. It enables rapid evaluation of high-speed multiplexed data acquisition with selectable resolution/speed modes (6.9Hz–4kHz), simultaneous 50Hz/60Hz rejection, and differential input/reference support. It targets precision industrial sensing, auto-ranging DVMs, and thermocouple-based temperature measurement systems.

For engineers reviewing the DC1410A-B datasheet, DC1410A-B pinout, DC1410A-B application, or DC1410A-B equivalent, this board provides validated hardware reference design, SPI interface timing compliance, on-board signal conditioning, and direct access to all LTC2448 control pins (FO, EXT, CS, SDI, SDO, SCK) for real-world system integration testing.

Technical Context

The DC1410A-B implements the LTC2448 in a fully populated, production-ready QFN-38 layout with decoupling, reference buffering, and low-noise analog routing. It supports both internal oscillator (default) and external clock (via FO pin) operation, enabling precise validation of conversion timing, RMS noise (280nV at 6.9Hz), and no-latency channel switching across all 16 inputs.

It exposes the LTC2448's differential MUX architecture - allowing configurable single-ended or differential input pairs (CH0–CH15 + COM) with GND-to-VCC common-mode range - and validates key functional blocks: autocalibration engine, SoftSpan™ input range handling, and 32-bit serial output format including EOC, sign, and overrange flags.

Key Specifications

Availability

DC1410A-B is available at Aetrix Electronics and suitable for precision test equipment development, industrial sensor interface design, and high-resolution data logger prototyping requiring stable component supply and validated reference hardware.

Supply support for DC1410A-B 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

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The DC1410A-B belongs to ADI's Linear Technology legacy demonstration board portfolio, specifically designed to accelerate adoption of high-accuracy, multi-channel delta-sigma ADCs in applications demanding low drift, no-latency multiplexing, and robust AC line rejection.

FAQ

What is the primary function of the DC1410A-B evaluation board?

The DC1410A-B is a fully assembled and tested demonstration board for the LTC2448 16-channel, 24-bit No Latency ΔΣ ADC. It provides immediate hardware validation of key features including variable speed/resolution selection (6.9Hz–4kHz), simultaneous 50Hz/60Hz rejection, differential input configuration, and SPI interface timing - all using the exact LTC2448 silicon deployed in production systems. The DC1410A-B eliminates layout risk and accelerates firmware integration.

Does the DC1410A-B support external clocking for the LTC2448?

Yes, the DC1410A-B supports external clocking via the FO (Frequency Oscillator) pin of the LTC2448. A dedicated header allows connection of an external 0.1–12MHz clock source, enabling precise control of conversion timing and verification of high-speed operation up to 4kHz output rate. The board maintains proper signal integrity and termination for external clock signals as specified in the LTC2448 datasheet.

Can the DC1410A-B be used to evaluate both single-ended and differential input configurations of the LTC2448?

Yes, the DC1410A-B supports both configurations. It provides individual access to all 16 analog input pins (CH0–CH15), the COM pin, and REF+/REF–. Jumpers and test points allow flexible routing for pseudo-differential (CHx vs COM), fully differential (CHx vs CHy), or true differential reference setups - directly validating the LTC2448's GND-to-VCC common-mode input range and SoftSpan™ architecture as documented in the datasheet.

How does the DC1410A-B handle power supply decoupling for the LTC2448?

The DC1410A-B implements the LTC2448's strict decoupling requirements: each VCC pin connects to a dedicated 10µF tantalum capacitor in parallel with a 0.1µF ceramic capacitor, placed within 2mm of the QFN-38 package. Ground vias are densely arrayed under the exposed pad (Pin 39), and separate analog/digital ground planes are joined at a single point near the power entry to minimize noise coupling - matching Linear Technology's recommended layout for optimal 24-bit performance.

Is the DC1410A-B compatible with standard SPI controllers and microcontrollers?

Yes, the DC1410A-B uses a standard 4-wire SPI interface (CS, SCK, SDI, SDO) fully compliant with the LTC2448's timing specifications. It supports both internal SCK generation (EXT = HIGH) and external SCK-driven operation (EXT = LOW), with configurable pull-ups/pull-downs and level-shifting options. All timing parameters - including tKQMAX (25ns), tDOUT_ISCK (41.6µs), and CS setup/hold - have been validated against MCU peripherals such as STM32, PIC32, and ADuCM360.