Analog Devices Inc. DC1058A-A

Overview

DC1058A-A from Analog Devices (formerly Linear Technology) is a 48-lead QFN evaluation board designed to demonstrate the LTC2203 - a 16-bit, 25 Msps high-speed analog-to-digital converter optimized for wide dynamic range digitization of RF/IF signals up to 380 MHz. It supports PGA front-end configuration (1.667 V_P-P or 2.5 V_P-P input range), delivers 81.6 dB SNR and 100 dB SFDR at 2.5 V range, and operates from a single 3.3 V supply. The board enables rapid validation in spectrum analysis, communications receivers, and ATE systems.

For engineers reviewing the DC1058A-A datasheet, DC1058A-A pinout, DC1058A-A application, or DC1058A-A equivalent, this page provides verified hardware interface details, layout-validated signal integrity guidance, supported ADC configuration modes (PGA, dither, randomizer), clocking architecture (duty cycle stabilizer enabled), and direct integration paths with FPGA-based data capture systems using CMOS-level outputs (0.5–3.6 V swing).

Technical Context

The DC1058A-A implements the LTC2203 in a fully populated, impedance-controlled layout with matched differential analog input traces (50 Ω), ultra-low-noise power delivery (multiple ceramic bypass caps per VDD pin), and isolated digital output routing to minimize crosstalk. It integrates the LTC2203's internal 2.5 V bandgap reference (SENSE tied to VDD), 1.25 V common-mode bias (VCM), and configurable clock duty cycle stabilizer - all validated per Linear's DC1058A-A design files.

Board-level features include SMA-connected differential analog inputs, LVDS-compatible CLK and CLKOUT differential clock interfaces, OE-controlled CMOS data bus, and dedicated test points for OF (out-of-range), RAND, MODE, and SHDN control signals. Power sequencing is implemented via on-board regulators and discrete LDOs to meet LTC2203's strict analog/digital supply separation requirements.

Key Specifications

Availability

DC1058A-A is available at Aetrix Electronics and suitable for spectrum analyzers, cellular base station receivers, and automated test equipment requiring stable component supply, full-speed ADC evaluation, and production-ready signal integrity validation.

Supply support for DC1058A-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving precision instrumentation, communications, and industrial markets.

The DC1058A-A belongs to Linear Technology's legacy evaluation board portfolio, specifically engineered to accelerate time-to-test for high-speed ADCs targeting RF/IF digitization in demanding communications and measurement applications.

FAQ

What is the primary function of the DC1058A-A evaluation board?

The DC1058A-A evaluation board is a fully assembled, tested platform for the LTC2203 16-bit, 25 Msps analog-to-digital converter. Its purpose is to enable immediate functional verification, AC/DC performance characterization, and system-level integration testing - including SNR, SFDR, and full-power bandwidth validation - without requiring custom PCB development. The DC1058A-A provides all necessary power regulation, clock conditioning, and signal routing per LTC2203's datasheet requirements.

Does the DC1058A-A support both LTC2203 and LTC2202 devices?

No - the DC1058A-A is specifically designed and validated for the LTC2203 (25 Msps variant). While the LTC2202 (10 Msps) shares the same 48-lead QFN package and pinout, the DC1058A-A layout, power delivery, and signal integrity optimizations are tuned for 25 Msps operation, including trace length matching and bypass capacitor selection. Using LTC2202 on DC1058A-A is possible but not characterized or guaranteed per Linear's documentation for DC1058A-A.

What clocking options does the DC1058A-A provide for the LTC2203?

The DC1058A-A supports single-ended CLK input via SMA connector and includes an optional clock duty cycle stabilizer circuit that maintains high AC performance across wide input duty cycles (5%–95%). It also provides differential CLKOUT± outputs synchronized to the sampling clock, enabling precise timing alignment in multi-board or FPGA-capture systems. The DC1058A-A does not include an on-board oscillator; external clock sources must be supplied.

How is analog input coupling implemented on the DC1058A-A?

The DC1058A-A provides transformer-coupled differential analog input paths (AIN+ and AIN–) compatible with both AC-coupled and DC-coupled signal sources. Input transformers support 50 Ω termination and preserve LTC2203's specified 380 MHz full-power bandwidth. For DC-coupled operation, the board includes solder-jumper options to bypass transformers and route signals directly to the ADC inputs with proper common-mode bias (1.25 V via VCM pin).

Can the DC1058A-A be used with FPGA-based data capture systems?

Yes - the DC1058A-A is explicitly designed for seamless interfacing with FPGA development platforms. Its 16-bit CMOS digital outputs (D0–D15), OE control, and low-skew CLKOUT± signals align with standard FPGA I/O standards (LVCMOS, SSTL). Timing parameters (t_D ≤ 4.9 ns, t_SKEW ≤ ±0.6 ns) are verified for reliable capture at 25 Msps. Reference HDL examples and pinout mapping for Xilinx and Intel FPGAs are provided in the DC1058A-A user guide.