Analog Devices Inc. DC1565A-C

Overview

DC1565A-C from Analog Devices (formerly Linear Technology) is a demonstration board for the LTC2152-14 14-bit, 250Msps analog-to-digital converter. It provides full evaluation of AC/DC performance, DDR LVDS output timing, clock duty cycle stabilization, and SPI configuration in a production-ready layout with calibrated analog input path and low-jitter clock distribution. Used in high-speed communications signal chain validation.

For engineers reviewing the DC1565A-C datasheet, DC1565A-C pinout, DC1565A-C application, or DC1565A-C equivalent, this page delivers verified board-level specifications, real-world test setup guidance, supported ADC variant compatibility, and sourcing support for RF sampling system development.

Technical Context

The DC1565A-C implements a complete signal acquisition reference design centered on the LTC2152-14 ADC, featuring a wideband balun-coupled differential analog input path (up to 1.25GHz full-power bandwidth), ultra-low phase-noise clock conditioning circuitry, and impedance-controlled DDR LVDS output routing to FPGA interfaces. It supports both internal and external reference modes via SENSE pin configuration.

Board-level features include on-board SPI programming interface (via USB-based DC1085B controller), selectable LVDS output current (1.75mA/3.5mA), Nap/Sleep mode control, and configurable clock duty cycle stabilizer enable/disable - all accessible through jumper settings and register writes per the LTC2152-14 datasheet.

Key Specifications

Availability

DC1565A-C is available at Aetrix Electronics and suitable for RF sampling system validation, software-defined radio prototyping, and high-definition video digitization requiring stable component supply and traceable evaluation hardware.

Supply support for DC1565A-C 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 ICs for precision and high-speed applications.

The DC1565A-C belongs to Analog Devices' Linear Technology Evaluation Board product line, designed specifically to accelerate time-to-test for high-speed data converters by providing fully characterized, production-grade layouts and documented measurement procedures.

FAQ

What is the primary function of the DC1565A-C evaluation board?

The DC1565A-C evaluation board is a dedicated hardware platform for evaluating the LTC2152-14 14-bit, 250Msps analog-to-digital converter. It enables engineers to validate dynamic performance (SNR, SFDR), timing integrity (DDR LVDS skew, pipeline latency), SPI configurability, and power mode behavior under real-world signal conditions without custom PCB development. The DC1565A-C includes calibrated analog input coupling, low-jitter clock distribution, and USB-based control via the DC1085B interface.

Which ADC variants are compatible with the DC1565A-C board?

The DC1565A-C is specifically designed for and mechanically/electrically compatible only with the LTC2152-14 (250Msps). While the LTC2151-14 (210Msps) and LTC2150-14 (170Msps) share the same 40-pin QFN package and pinout, the DC1565A-C's clocking, power, and layout optimizations target the 250Msps operation point and full-speed timing margins of the LTC2152-14. Use of other variants requires independent validation of timing closure and jitter sensitivity.

Does the DC1565A-C support both internal and external voltage references?

Yes, the DC1565A-C supports both reference modes via the SENSE pin on the LTC2152-14. When SENSE is tied to VDD, the internal 1.25V reference activates, enabling a ±0.75V differential input range. When a precision 1.2V–1.3V external reference is applied to SENSE, the input range becomes ±0.6×V_SENSE, allowing flexible scaling. The board provides test points and jumpers to configure either mode without solder modification.

How is the DDR LVDS output interface implemented on the DC1565A-C?

The DC1565A-C routes all seven DDR LVDS data pairs (D0_1± through D12_13±), CLKOUT±, and OF± to a 32-pin Samtec QSH connector with controlled 100Ω differential impedance. Onboard 100Ω termination resistors are enabled by default, and LVDS output current (1.75mA or 3.5mA) is programmable via SPI register writes. The board includes matched-length traces and ground return vias to minimize skew (<0.55ns) and ensure reliable capture by FPGA receivers.

What software and tools are required to operate the DC1565A-C?

Operation of the DC1565A-C requires the DC1085B USB-based controller and Analog Devices' LTpowerPlay® or QSPI-compatible evaluation software. These tools provide GUI-driven SPI register access, real-time configuration of clock duty cycle stabilizer, Nap/Sleep modes, LVDS current, and output format selection. No custom firmware or driver installation is needed - the DC1085B appears as a standard USB HID device under Windows and Linux.