Analog Devices Inc. DC1751A-A

Overview

DC1751A-A from Analog Devices is a high-performance evaluation board for the LTM9011-14, an 8-channel, 14-bit, 125Msps simultaneous-sampling ADC with serial LVDS outputs, 73.1dB SNR, 88dB SFDR, and integrated bypass capacitance in a 140-pin BGA package. It enables rapid prototyping of wideband multichannel digitization systems for communications and instrumentation.

For engineers reviewing the DC1751A-A datasheet, DC1751A-A pinout, DC1751A-A application, or DC1751A-A equivalent, this page provides verified hardware interface details, supported sampling modes (1-/2-lane LVDS), analog input configuration (1–2V_P-P, differential), clocking options (differential/single-ended ENC±), and SPI register control - all validated against the official DC1751A-A user guide and LTM9011-14 datasheet Rev D.

Technical Context

The DC1751A-A implements a complete signal chain around the LTM9011-14, including precision AC-coupled analog inputs with transformer-based baluns, adjustable common-mode bias via VCM pins, and matched 100Ω differential LVDS trace routing to SMA connectors. It supports both 1-lane (16/14/12-bit) and 2-lane (14/16/12-bit) serialization modes at up to 125Msps.

On-board power regulation delivers clean, decoupled 1.8V analog (VDD) and output (OVDD) supplies with low-noise LDOs and integrated ceramic bypassing per the LTM9011-14's internal capacitor architecture. The board includes a configurable SPI interface (CSA/CSB/SCK/SDI/SDOA/SDOB) for real-time register programming of gain, offset, shutdown, and output mode settings.

Key Specifications

Availability

DC1751A-A is available at Aetrix Electronics and suitable for cellular base station development, software-defined radio (SDR) prototyping, portable medical imaging front-ends, and multichannel data acquisition systems requiring stable component supply and rapid time-to-test.

Supply support for DC1751A-A 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 DC1751A-A belongs to ADI's Linear Technology evaluation board family, designed specifically to accelerate validation and integration of µModule® data converters like the LTM9011-14 into high-speed, space-constrained, multichannel systems.

FAQ

What is the primary function of the DC1751A-A evaluation board?

The DC1751A-A evaluation board is a fully assembled and tested platform for evaluating the LTM9011-14 octal ADC. It provides immediate access to all analog inputs, LVDS outputs, SPI control, and clock interfaces - enabling engineers to characterize dynamic performance (SNR, SFDR), validate timing margins, and integrate the device into multichannel digitization systems without custom PCB design. DC1751A-A supports the full 125Msps sample rate and 14-bit resolution of the LTM9011-14.

Does the DC1751A-A support both 1-lane and 2-lane LVDS output modes?

Yes, the DC1751A-A fully supports both 1-lane and 2-lane LVDS serialization modes as defined in the LTM9011-14 datasheet. Mode selection is controlled via SPI register writes to the LTM9011-14 onboard the board. In 2-lane mode, each channel outputs two bits per clock cycle; in 1-lane mode, it outputs one bit per cycle - allowing flexible FPGA interface design while maintaining full 14-bit accuracy. DC1751A-A routing and termination are optimized for both configurations.

Can the DC1751A-A be used with the LTM9010-14 or LTM9009-14?

No - the DC1751A-A is specifically designed and validated for the LTM9011-14 (125Msps speed grade) only. While the LTM9010-14 (105Msps) and LTM9009-14 (80Msps) share the same pinout and package, the DC1751A-A's analog front-end, clock path, and power delivery are tuned for 125Msps operation and may not guarantee specified performance with lower-speed variants. Analog Devices does not qualify or support DC1751A-A with LTM9010-14 or LTM9009-14.

What clock sources are compatible with the DC1751A-A's ENC+/ENC− inputs?

The DC1751A-A accepts differential or single-ended clock signals on its ENC+/ENC− SMA inputs, supporting sine wave, PECL, LVDS, TTL, and CMOS logic families per the LTM9011-14 specification. The board includes on-board AC coupling and termination, and the LTM9011-14's internal duty cycle stabilizer ensures full-performance operation across 20%–80% duty cycles. DC1751A-A has been verified with 125MHz LVDS and 125MHz sine wave clocks delivering 73.1dB SNR.

Does the DC1751A-A include provisions for external reference voltage?

Yes - the DC1751A-A provides access to the SENSE pin of the LTM9011-14 via a test point and supports external reference configuration. When an external 0.625V–1.3V reference is applied to SENSE, the LTM9011-14 uses it to set full-scale input range, enabling precise gain calibration and improved SNR stability over temperature. The board maintains proper decoupling and layout isolation for external reference use, as confirmed in the DC1751A-A user guide Rev D.