Analog Devices Inc. DC2365A-F

Overview

DC2365A-F from Analog Devices is an evaluation board for the LTC2357-16 - a 16-bit, quad-channel, simultaneous-sampling SAR ADC with buffered differential inputs, ±10.24V input range, 350ksps/ch throughput, and integrated 4.096V reference buffer. It supports pin-selectable CMOS (1.8V–5V) or LVDS serial interface and operates from ±15V analog supplies with 5V digital supply.

For engineers reviewing the DC2365A-F datasheet, DC2365A-F pinout, DC2365A-F application, or DC2365A-F equivalent, this board enables rapid validation of high-voltage industrial data acquisition systems requiring wide common-mode range (±12.5V), rail-to-rail overdrive tolerance, and per-channel SoftSpan™ configuration (±10.24V/0–10.24V/±5.12V/0–5.12V).

Technical Context

The DC2365A-F implements full signal chain support for the LTC2357-16, including precision ±15V analog power conditioning, low-noise 4.096V reference generation with 47µF bulk capacitance, and configurable CMOS/LVDS I/O termination. It provides direct access to all 48 LQFP pins via solderable test points and headers, enabling evaluation of channel-to-channel crosstalk (<−109dB), 128dB CMRR at 200Hz, and aperture jitter (3ps RMS).

Designed for functional verification under real-world conditions, the board integrates four matched RC anti-aliasing filters (0.1µF + 2.2Ω), independent IN+/IN– input buffers, and jumpers to select VCC/VEE supply voltages (7.5V–38V / −16.5V–0V), supporting operation across C/I/H-grade temperature ranges (0°C to 125°C).

Key Specifications

Availability

DC2365A-F is available at Aetrix Electronics and suitable for industrial process control, power line monitoring, PLC analog input modules, and test & measurement equipment requiring stable component supply and validated high-voltage ADC evaluation capability.

Supply support for DC2365A-F 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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs, serving industrial, automotive, communications, and healthcare markets.

The DC2365A-F belongs to Analog Devices' precision data acquisition evaluation platform family, designed specifically to accelerate development of high-fidelity, multi-channel, high-common-mode industrial sensing systems using their SoftSpan™ ADC portfolio.

FAQ

What is the primary function of the DC2365A-F evaluation board?

The DC2365A-F evaluation board is a fully assembled and tested platform for evaluating the LTC2357-16 16-bit quad simultaneous-sampling ADC. It provides complete analog signal conditioning, reference buffering, and configurable digital interface circuitry to validate performance metrics including SNR (94.2dB), THD (−110dB), INL (±1LSB), and CMRR (128dB) under real operating conditions. The DC2365A-F enables immediate lab characterization without custom PCB design.

Does the DC2365A-F support both CMOS and LVDS output modes of the LTC2357-16?

Yes, the DC2365A-F supports both interface modes via on-board jumpers and termination resistors. For CMOS mode, it configures OVDD between 1.8V and 5V with 25pF load matching; for LVDS mode, it sets OVDD between 2.375V and 5.25V and applies 100Ω differential termination. The DC2365A-F schematic matches the LTC2357-16's timing requirements for both interfaces, including SCKI period (10ns min for CMOS, 4ns min for LVDS) and skew control.

Can the DC2365A-F be used to evaluate the LTC2357-16's SoftSpan™ input range flexibility?

Yes, the DC2365A-F allows full evaluation of all SoftSpan™ configurations - ±10.24V, 0–10.24V, ±5.12V, 0–5.12V, ±12.5V, 0–12.5V, ±6.25V, and 0–6.25V - through software-controlled SPI register writes. Input signal routing, reference voltage selection (internal 4.096V or external), and common-mode bias are hardware-configurable, enabling direct validation of per-channel range switching and dynamic range optimization. The DC2365A-F documentation includes register maps and setup procedures for all SoftSpan™ modes.

What power supply requirements does the DC2365A-F have for full LTC2357-16 operation?

The DC2365A-F requires three independent supplies: ±15V (or adjustable 7.5–38V / −16.5–0V) for analog rails (VCC/VEE), 5V for VDD core logic, and 1.8–5.25V (CMOS) or 2.375–5.25V (LVDS) for OVDD I/O. On-board regulators condition these inputs, and the DC2365A-F includes current-sense resistors and test points to monitor IVCC (3.9mA typ), IVEE (−3.2mA typ), and IVDD (14.3mA typ) during 350ksps 4-channel operation.

Is the DC2365A-F compatible with standard Arduino or Raspberry Pi microcontrollers for control and data capture?

No, the DC2365A-F is not directly compatible with Arduino or Raspberry Pi GPIO due to its LVDS/CMOS interface voltage levels, timing-critical SCKI/SDO timing (sub-10ns edges), and requirement for precise CNV pulse control. It is intended for use with Analog Devices' DC2285A demonstration controller or custom FPGA/microcontroller systems that meet LTC2357-16's strict timing specs (e.g., tCNVH ≥ 40ns, tSCKI ≥ 10ns for CMOS). The DC2365A-F does not include level-shifting or protocol translation circuitry.