Analog Devices Inc. DC1369A-L

Overview

DC1369A-L from Analog Devices (formerly Linear Technology) is a fully populated, ready-to-use evaluation board for the LTC2258-12 12-bit, 65Msps ultra-low-power analog-to-digital converter. It features differential analog input, selectable CMOS or DDR LVDS outputs, 71.1dB SNR, 88dB SFDR, and single 1.8V supply operation - optimized for high-frequency undersampling in software-defined radio and portable medical imaging systems.

For engineers reviewing the DC1369A-L datasheet, DC1369A-L pinout, DC1369A-L application, or DC1369A-L equivalent, this page provides verified hardware configuration details, supported ADC modes (full-rate CMOS, DDR CMOS, DDR LVDS), clock interface options (differential ENC+/ENC–, duty cycle stabilizer), and layout-critical design guidance for RF-sensitive high-speed data acquisition.

Technical Context

The DC1369A-L implements the LTC2258-12 in its highest-speed 65Msps configuration with full-feature support: on-board differential transformer-coupled analog input path, programmable reference selection (internal/external via SENSE pin), SPI-configurable output format and randomizer, and dual-clock domain isolation between encode and digital output sections.

It supports all three digital output modes - full-rate CMOS, double-data-rate CMOS, and double-data-rate LVDS - with dedicated termination networks, adjustable OVDD (1.2V/1.5V/1.8V), and independent power domains for analog (VDD), output drivers (OVDD), and ground planes (GND/OGND) to minimize noise coupling and preserve AC performance.

Key Specifications

Availability

DC1369A-L is available at Aetrix Electronics and suitable for software-defined radio development, cellular base station prototyping, portable ultrasound front-ends, and multi-channel instrumentation requiring stable component supply and traceable evaluation hardware.

Supply support for DC1369A-L 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 communications, industrial, automotive, and healthcare markets.

The DC1369A-L belongs to ADI's Linear Technology legacy evaluation board family, designed specifically to accelerate time-to-prototype for high-speed data converters - emphasizing RF layout fidelity, signal integrity validation, and production-representative thermal and power delivery.

FAQ

What is the primary function of the DC1369A-L evaluation board?

The DC1369A-L evaluation board is a complete hardware platform for evaluating the LTC2258-12 12-bit, 65Msps analog-to-digital converter. It enables rapid characterization of AC performance (SNR, SFDR), digital interface timing (CMOS/LVDS), clock jitter sensitivity, and reference configuration options - without requiring custom PCB design. The board includes all necessary power regulation, signal conditioning, and SPI control infrastructure for immediate lab use.

Does the DC1369A-L support DDR LVDS output mode for the LTC2258-12?

Yes, the DC1369A-L fully supports DDR LVDS output mode for the LTC2258-12. It provides on-board 100Ω differential termination, selectable 1.75mA or 3.5mA LVDS drive strength, and matched-length differential routing to CLKOUT+/CLKOUT– and all D[0_1]± through D[10_11]± pairs. The board's schematic and layout are optimized to maintain signal integrity at 65Msps DDR rates.

Can the DC1369A-L be used with external clock sources other than differential sine wave inputs?

Yes, the DC1369A-L accepts multiple clock input types for the LTC2258-12's ENC+/ENC– pins, including differential sine wave, PECL, LVDS, TTL, and CMOS signals - as specified in the LTC2258-12 datasheet. The board includes AC-coupling capacitors and biasing networks compatible with these logic families, and the optional clock duty cycle stabilizer (enabled via CS pin) ensures robust operation across wide duty-cycle ranges.

How does the DC1369A-L handle analog input range selection for the LTC2258-12?

The DC1369A-L implements analog input range selection for the LTC2258-12 via the SENSE pin. By default, it configures the internal reference for ±1V input range (SENSE tied to VDD). Jumpers allow reconfiguration to ±0.5V (SENSE grounded) or user-defined ranges (0.625–1.3V applied externally), directly enabling the LTC2258-12's 1VP-P to 2VP-P selectable input span per datasheet specifications.

Is SPI communication functional on the DC1369A-L for configuring the LTC2258-12 mode registers?

Yes, SPI communication is fully functional on the DC1369A-L. The board exposes the LTC2258-12's CS, SCK, SDI, and open-drain SDO pins via a 0.1" header, supporting both write and readback operations. The SDO line includes a 2kΩ pull-up resistor, enabling real-time verification of register settings - critical for validating output mode, randomizer enable, nap/shutdown states, and clock stabilizer control during DC1369A-L evaluation.