Analog Devices Inc. DC1398A-GA

Overview

DC1398A-GA from Analog Devices (formerly Linear Technology) is an evaluation board for the LTM9001 16-bit high-performance receiver subsystem, integrating a low-noise amplifier, anti-alias filter, and ADC in a µModule package. It supports single-ended or differential RF input (50Ω matched), CMOS digital output, and operates from 3.8V to 6V with on-board low-noise regulators.

For engineers reviewing the DC1398A-GA datasheet, DC1398A-GA pinout, DC1398A-Ga application, or DC1398A-GA equivalent, this board enables rapid validation of LTM9001 performance in wideband data acquisition, RF receiver front-ends, and high-fidelity digitization systems using PScope software and DC890 interface.

Technical Context

The DC1398A-GA implements a complete signal chain evaluation platform for the LTM9001 µModule, which integrates a 16-bit, 130Msps ADC with a programmable-gain amplifier and baseband filter. It provides configurable input coupling (AC/DC), differential/single-ended drive paths, and on-board reference and clock conditioning circuitry.

Board-level features include impedance-matched SMA connectors (J2 for AIN+, J3 for ENC), jumper-selectable PGA gain (JP1), ADC shutdown (JP3), internal dither (JP4), and amplifier enable (JP5). The EEPROM U5 enables automatic identification by PScope software for correct sampling parameter loading.

Key Specifications

Availability

DC1398A-GA is available at Aetrix Electronics and suitable for RF receiver evaluation, high-speed data acquisition system prototyping, and 16-bit analog-to-digital conversion validation requiring stable component supply and traceable evaluation hardware.

Supply support for DC1398A-GA 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 for precision and high-speed applications.

The DC1398A-GA belongs to Analog Devices' µModule evaluation board family, designed to accelerate development of high-fidelity signal acquisition systems leveraging integrated subsystems like the LTM9001 for demanding RF, instrumentation, and communications applications.

FAQ

What is the primary function of the DC1398A-GA evaluation board?

The DC1398A-GA evaluation board is specifically designed to demonstrate and validate the performance of the LTM9001 16-bit receiver subsystem µModule. It provides a fully configured, lab-ready platform with optimized layout, matched input/output interfaces, and on-board power regulation-enabling engineers to evaluate ADC dynamic performance, amplifier linearity, and system-level SNR/SFDR without custom PCB design. DC1398A-GA supports both AC- and DC-coupled signal paths and integrates EEPROM-based auto-configuration for PScope software.

Which clock source is recommended for use with the DC1398A-GA?

A low-phase-noise clock source is required at the J3 (ENC) SMA connector to preserve the LTM9001's 16-bit dynamic range. Recommended sources include filtered RF signal generators (e.g., HP 8644B with band-pass filtering) or dedicated low-jitter oscillators such as the DC1216 evaluation board. High jitter directly degrades SNR; the DC1398A-GA's 50Ω input matches standard lab clock sources, and its design assumes external clock conditioning to meet LTM9001's encode timing specifications.

How does the DC1398A-GA interface with data acquisition and analysis tools?

The DC1398A-GA connects directly to the DC890 FastDAACS data acquisition board via a ribbon cable, enabling real-time CMOS digital output capture. Its onboard EEPROM (U5) allows Linear Technology's free PScope software to auto-detect the board and load correct sampling parameters-including sample rate, bit depth, and randomizer state. DC1398A-GA supports manual configuration override if needed, and outputs are processed for FFT, histogram, and spectral analysis without additional hardware.

Can the DC1398A-GA be used for differential input evaluation?

Yes-the DC1398A-GA supports differential input evaluation by modifying the input network per Table 2 in the documentation: remove R7, install R5, and optionally replace C1/C8 with 0Ω jumpers for DC coupling. The board retains full LTM9001 common-mode voltage compliance when configured correctly. Differential drive preserves noise rejection and improves distortion performance; the default single-ended setup uses transformer T1 as a balun, but true differential operation requires discrete component changes verified against the LTM9001 datasheet limits.

What power supply requirements must be met for reliable DC1398A-GA operation?

The DC1398A-GA requires a clean, low-noise DC power supply delivering 3.8V to 6V at ≥1A. Although on-board regulators generate the LTM9001's internal supply rails (AVDD, DVDD, VCM), the input rail (E2, VS) must maintain stability under transient load-especially during high-speed ADC sampling. Ripple or noise on the input supply couples into analog performance metrics (e.g., SNR degradation). Lab-grade supplies with ≤1mV RMS noise and fast transient response are strongly recommended for valid DC1398A-GA characterization.