Analog Devices Inc. DC571A

Overview

DC571A from Analog Devices (formerly Linear Technology) is an evaluation board for the LTC2418 16-channel 24-bit delta-sigma ADC. It enables direct sensor digitization with 2ppm INL, 0.2ppm RMS noise, and 110dB 50/60Hz notch rejection - used in precision industrial data acquisition systems requiring high-resolution multiplexed measurements.

For engineers reviewing the DC571A datasheet, DC571A pinout, DC571A application, or DC571A equivalent, this page delivers verified hardware configuration details, supported ADC operating modes (internal/external oscillator, differential/single-ended input), reference voltage flexibility (0.1V to VCC), and real-world performance validation across temperature and supply ranges.

Technical Context

The DC571A implements the LTC2418 in a fully populated, ready-to-use evaluation platform with on-board precision reference, buffered analog inputs, and configurable FO pin routing for 50Hz/60Hz/external-clock rejection tuning. It supports both internal oscillator operation (no external components) and external clock synchronization via the FO pin.

It provides direct access to all 28-pin SSOP signals of the LTC2418, including CH0–CH15, REF+/REF–, COM, SDO/SCK/SDI/CS, and FO - enabling full characterization of multiplexer settling, autocalibration behavior, and SPI-compatible serial interface timing under real load conditions.

Key Specifications

Availability

DC571A is available at Aetrix Electronics and suitable for precision instrumentation, industrial process control, and sensor calibration systems requiring stable component supply, traceable evaluation hardware, and long-term design continuity.

Supply support for DC571A 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The DC571A belongs to Analog Devices' precision data acquisition evaluation platform family, designed specifically to accelerate development of high-accuracy, low-power, multi-channel measurement systems using their delta-sigma ADC portfolio.

FAQ

What is the primary function of the DC571A evaluation board?

The DC571A evaluation board is a fully assembled and tested platform for evaluating the LTC2418 16-channel 24-bit delta-sigma ADC. It provides immediate access to all critical analog and digital interfaces, pre-configured reference circuitry, and jumper-selectable operating modes - enabling rapid validation of DC571A-supported features including 50/60Hz notch filtering, differential input rejection, and autocalibration stability.

Does the DC571A support both LTC2414 and LTC2418 devices?

No - the DC571A is specifically designed and validated for the LTC2418 (16-channel version). While pin-compatible with the LTC2414 (8-channel), the DC571A's layout and firmware support all 16 input channels (CH0–CH15), and its documentation, schematics, and test procedures are aligned exclusively with the LTC2418 functionality and performance specifications.

How is the 50Hz/60Hz notch filter configured on the DC571A?

The DC571A uses the LTC2418's FO pin to configure line-frequency rejection: tying FO to VCC selects 50Hz rejection, tying FO to GND selects 60Hz rejection, and driving FO with an external clock (f_EOSC) sets rejection at f_EOSC/2560. The board includes solder jumpers and test points to implement each configuration without modification to the DC571A PCB.

What reference voltage options does the DC571A provide for the LTC2418?

The DC571A includes an on-board LT6655-2.5 precision reference (2.5V, 5ppm/°C drift) connected to REF+ and REF–, and also provides test points and header pins to connect external differential references from 0.1V to VCC - preserving the LTC2418's full ratiometric and remote sensing capability as specified in its datasheet.

Can the DC571A operate from a single 3.3V supply?

Yes - the DC571A supports 2.7V to 5.5V operation per the LTC2418 specification. When powered from 3.3V, it maintains full functionality including 24-bit resolution, 2ppm INL, and 110dB 50/60Hz rejection. The on-board LDO and decoupling network are optimized for stable operation across this entire supply range, and all digital I/O levels remain compatible with standard 3.3V logic systems.