Texas Instruments ADS5482EVM

Overview

ADS5482EVM from Texas Instruments is an evaluation module designed to characterize the ADS5482, a 16-bit, 125-MSPS analog-to-digital converter (ADC). It supports flexible clocking (external SMA, onboard VCXO + CDCE72010 with crystal filter or LVPECL), dual analog input paths (transformer-coupled or THS4509 amplifier-based), and LVDS digital output capture via J4 connector. The EVM enables performance validation under real-world signal, reference, and supply conditions.

For engineers reviewing the ADS5482EVM datasheet, ADS5482EVM pinout, ADS5482EVM application, or ADS5482EVM equivalent, this page details its physical layout, jumper-configurable power/clock/analog input options, TSW1200-compatible data capture interface, and measured ADC performance metrics including SNR (77.94 dBFS), SINAD (77.56 dBFS), and SFDR (88.46 dBc) at 122.88 MSPS sampling rate.

Technical Context

The ADS5482EVM implements three distinct clock delivery methods: direct external single-ended clock via J12 (converted to differential by ADT4-1WT transformer), crystal-filtered LVCMOS output from CDCE72010 (Y0, 122.88 MHz), or differential LVPECL output (Y1P/Y1N). Power is configurable via jumpers for cascaded switching (TPS5420D + TPS79501DCQ) or LDO-only (TPS79633/TPS79601) topologies across 5.1–36 V input range.

Analog input routing supports either passive transformer coupling (J1 → ADC) or active amplification using THS4509 (J1 → amplifier → bandpass filter → ADC), with jumper-selectable termination and power-down control. Digital outputs are LVDS-compliant and accessed through a 20-pin header (J4) requiring 100-Ω parallel termination at the receiver.

Key Specifications

Availability

ADS5482EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, communications infrastructure testing, and radar system prototyping requiring stable component supply and validated reference design support.

Supply support for ADS5482EVM 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

Texas Instruments (TI) is a global semiconductor leader specializing in analog, embedded processing, and high-performance data converters.

The ADS5482EVM belongs to TI's precision high-speed ADC evaluation platform family, engineered to accelerate time-to-test for RF-sampling and wideband digitization applications in test equipment, defense electronics, and 5G infrastructure.

FAQ

What is the primary function of the ADS5482EVM?

The ADS5482EVM is an evaluation module specifically built to assess the performance of the ADS5482 16-bit, 125-MSPS analog-to-digital converter. It provides configurable clocking, analog input conditioning (transformer or THS4509 amplifier path), and LVDS digital output capture. Engineers use the ADS5482EVM to validate dynamic parameters like SNR, SINAD, and SFDR under controlled signal, power, and timing conditions before integrating the ADS5482 into final systems.

Which ADC does the ADS5482EVM evaluate?

ADS5482EVM evaluates the ADS5482 - a 16-bit, 125-MSPS pipeline analog-to-digital converter from Texas Instruments. It is not compatible with ADS5483 or other members of the ADS548x family without hardware modification or firmware adjustment. The board's schematic, jumper definitions, and test results in SLAU207 are explicitly tied to ADS5482 characteristics and pinout.

Does the ADS5482EVM include an onboard clock source?

Yes - the ADS5482EVM supports an optional onboard clock solution using a VCXO (491.52 MHz) and CDCE72010 programmable clock generator. When populated and configured (jumper SJP7 set to 3–4), the CDCE72010 divides the VCXO frequency to generate a 122.88 MHz LVCMOS clock on Y0, which passes through an unpopulated crystal filter before reaching the ADS5482. This configuration is validated in Section 3.3 of SLAU207 and yields SNR = 77.94 dBFS.

How is analog input configured on the ADS5482EVM?

Analog input on the ADS5482EVM is jumper-selectable between two paths: (1) transformer-coupled single-ended input via SMA J1 (default, SJP1/SJP2 = 2–3), or (2) amplified input via THS4509 operational amplifier (SJP1/SJP2 = 1–2, JP3 = 1–2, J7 = +5 V, J9 = GND). The THS4509 path includes an unpopulated bandpass filter section optimized for 10–58 MHz signals, as documented in Section 2.2.3.2 and Figure 8 of SLAU207.

Can the ADS5482EVM be used with the TSW1200 capture board?

Yes - the ADS5482EVM is fully compatible with the TSW1200 evaluation capture board. J4 provides a 20-pin LVDS output header that mates directly with the TSW1200 input interface, which includes integrated 100-Ω termination. The SLAU207 User's Guide (Section 3.1) details setup steps, software configuration (TI ADC Selection, sample rate, FFT length), and jumper settings required to acquire and analyze ADC data using the TSW1200 with ADS5482EVM.