Texas Instruments ADS5287EVM

Overview

ADS5287EVM from Texas Instruments is an evaluation module designed to characterize the ADS5287 - a 10-bit, 8-channel, 65-MSPS analog-to-digital converter (ADC) - under controlled signal, clock, and supply conditions. It supports differential or single-ended clock inputs, external or internal reference selection, and provides eight SMA analog input channels with transformer-coupled biasing.

For engineers reviewing the ADS5287EVM datasheet, ADS5287EVM pinout, ADS5287EVM application, or ADS5287EVM equivalent, this page details its hardware configuration, SPI control interface, LVDS serial output routing, power management options via TPS77533/TPS73218 LDOs, and compatibility with TI deserializer platforms including TSW1200 Rev B and ADSDeSer-50EVM.

Technical Context

The ADS5287EVM implements a 4-layer FR-4 PCB layout with unified ground plane and dedicated power planes for analog (3.3 V) and digital (1.8 V) domains. It integrates Mini-Circuits TC1-1T transformers for analog input conditioning and clock differential conversion, alongside On Semiconductor MC100EPT21 for single-ended clock amplification.

Control is delivered via USB-connected SPI interface software that configures ADS5287 registers-including clock mode (differential/single-ended), power-down/standby states, output termination (260 Ω to 55 Ω), source current (0.5–7.5 mA), per-channel gain (0–12 dB), and test patterns (ramp, deskew, synch).

Key Specifications

Availability

ADS5287EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, medical ultrasound front-ends, and communications receiver testing requiring stable component supply and validated evaluation infrastructure.

Supply support for ADS5287EVM 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 is a global semiconductor company specializing in analog, embedded processing, and high-performance data converters, with leadership in precision and high-speed ADC architectures.

The ADS5287EVM belongs to TI's high-speed ADC evaluation platform family, engineered to accelerate validation of multichannel, low-power, serial-output ADCs in demanding signal chain applications such as portable imaging and broadband instrumentation.

FAQ

What is the primary function of the ADS5287EVM?

The ADS5287EVM is a dedicated evaluation module for the ADS5287 10-bit, 8-channel, 65-MSPS ADC. It enables engineers to verify performance metrics-including SNR, SFDR, and ENOB-under real-world signal, clock, and supply conditions. The ADS5287EVM provides transformer-coupled analog inputs, configurable clocking (differential or single-ended), on-board LDO power regulation, and LVDS serial output interfacing to TI deserializers like the TSW1200 Rev B. Its design directly supports characterization workflows defined in TI's high-speed ADC evaluation methodology.

Which deserializer platforms are compatible with the ADS5287EVM?

The ADS5287EVM interfaces directly with the TI TSW1200 Rev B deserializer card via its Samtec QTH-060-02-F-D-A header, and also supports the ADSDeSer-50EVM through the ADS5281DeSerAdapter translation board. The TSW1200 Rev B requires a minimum ADC sampling frequency of 32 MHz due to its DCM clocking architecture. Both platforms provide parallel CMOS output after LVDS deserialization and include proper 100-Ωtermination for each LVDS pair-critical for maintaining signal integrity when evaluating the ADS5287EVM's serial output timing and jitter performance.

How does the ADS5287EVM handle clock input configuration?

The ADS5287EVM supports two clock input configurations: differential (default, using Mini-Circuits TC1-1T transformer) and single-ended (using On Semiconductor MC100EPT21 amplifier). Jumper settings JP3, JP4, and JP5 determine the path: positions 1–2 select transformer coupling (differential mode), while 2–3 enable single-ended PECL drive. The ADS5287 must be configured accordingly via SPI register 0x42 (0x8001 for differential). This dual-path flexibility allows users to assess the ADS5287EVM's sensitivity to clock jitter and common-mode rejection across realistic system-level clock distribution scenarios.

Can the ADS5287EVM operate with external voltage references?

Yes-the ADS5287EVM allows external reference selection via jumper JP2. Shorting pins 2–3 grounds the INT/EXT pin of the ADS5287, forcing it to accept external REFT and REFB voltages applied to J6 pins 1 and 3 respectively, with J6 pin 2 connected to ground. By default, JP2 is set to pins 1–2 to use the ADS5287's internal reference. This capability lets users evaluate how reference noise, drift, and headroom affect the ADS5287EVM's dynamic performance-especially critical in applications where system-level reference sharing or precision calibration is required.

What software tools are provided for controlling the ADS5287EVM?

Texas Instruments provides the ADC SPI Control Software-a Windows-based GUI that communicates with the ADS5287EVM over USB to configure all device registers. It supports manual SPI writes, script-based initialization (e.g., ADS5281_Init.reg_ADS528X), and one-click controls for reset, standby, power-down, clock mode, output format, test patterns, and per-channel settings (gain, swap, noise suppression). The software issues required initialization sequences per the ADS5287 datasheet and manages ADCRESET/PD pin states-ensuring reliable startup and repeatable measurement conditions during ADS5287EVM evaluation.