Texas Instruments ADC32J24EVM

Overview

ADC32J24EVM from Texas Instruments is an evaluation module designed to assess the ADC32J24 - a dual-channel, 12-bit, JESD204B-compliant analog-to-digital converter with 125 MSPS sampling rate, 1.8-V single-supply operation, and onboard LMK04828 clock generator for deterministic low-jitter timing in high-speed data acquisition systems.

For engineers reviewing the ADC32J24EVM datasheet, ADC32J24EVM pinout, ADC32J24EVM application, or ADC32J24EVM equivalent, this page delivers verified hardware configuration options, JESD204B lane setup guidance, dc-coupling resistor swap instructions, USB-based SPI GUI control details, and power architecture specifics for rapid lab validation of ADC32J24-based receiver designs.

Technical Context

The ADC32J24EVM implements a transformer-coupled dual-channel analog input path with selectable AC/DC coupling via resistor swaps (R137, R216, etc.), supports external SYSREF and clock inputs, and integrates the LMK04828 clock conditioner to generate synchronized, low-phase-noise sampling clocks for JESD204B link alignment.

It provides HSMC-compatible data output via two JESD204B lanes (one per ADC channel), onboard CPLD-based SPI interface routed through Mini-USB, and configurable power paths using TPS62080 DC/DC converters and TPS7A4700 low-noise LDOs for 1.8-V ADC core and 3.3-V LMK04828 supply domains.

Key Specifications

Availability

ADC32J24EVM is available at Aetrix Electronics and suitable for high-speed test equipment, radar front-end prototyping, software-defined radio development, and communications infrastructure design requiring stable component supply and full signal chain validation support.

Supply support for ADC32J24EVM 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-performance data conversion technologies.

The ADC32J24EVM belongs to TI's high-speed ADC evaluation platform family, engineered specifically to accelerate JESD204B-based system integration, reduce time-to-validation for wideband receivers, and provide reference hardware for clock synchronization, dc-coupling, and multi-lane data capture.

FAQ

What is the primary function of the ADC32J24EVM?

The ADC32J24EVM is an evaluation module built to characterize and validate the ADC32J24 - a dual-channel, 12-bit, 125 MSPS JESD204B analog-to-digital converter. It provides complete signal chain support including transformer-coupled analog inputs, onboard LMK04828 clock generation, HSMC-based JESD204B data output, and USB-controlled SPI configuration. The ADC32J24EVM enables engineers to verify timing alignment, SYSREF handling, lane synchronization, and dynamic performance before final system integration.

Does the ADC32J24EVM support DC-coupled analog inputs?

Yes, the ADC32J24EVM supports DC-coupled analog inputs. Per the SLAU579D user's guide, users must replace specific surface-mount resistors (R137, R216, R225, R227–R228, R218, R232, R235) on the top side of the board while retaining the THS4541RGT driver amplifiers pre-installed on ADC3xJxx EVMs. This configuration routes baseband signals directly to the ADC32J24 without AC-blocking capacitors, enabling sub-Hz to Nyquist-band digitization required in instrumentation and control applications. The ADC32J24EVM documentation confirms this mod is validated for channels B and C.

Which clock sources does the ADC32J24EVM support?

The ADC32J24EVM supports both external and internal clocking. It accepts a single-ended clock via the EXT_ADC_CLK SMA connector (J9), or uses its onboard LMK04828 clock generator - programmable via SPI - to produce low-jitter sampling clocks and synchronized SYSREF signals. The LMK04828 is powered by a dedicated 3.3-V rail and configured through jumpers JP12/JP13. This dual-clock capability ensures deterministic JESD204B link initialization and supports both standalone lab testing and system-level timing coherency validation with the ADC32J24.

How is the ADC32J24EVM controlled and configured?

The ADC32J24EVM is controlled via Mini-USB (J18) using Texas Instruments' HSDC Pro GUI software. This interface provides SPI access to all ADC32J24 registers (including dither, chopper, gain, test pattern, and clock divider settings) and LMK04828 configuration. The GUI features device-specific tabs (Common, ADC32Jxx, LMK04828) and supports real-time register read/write, test pattern injection, and lane alignment monitoring. All firmware, drivers, and GUI binaries are distributed in the ADC3xxxx_Installer_vxpx package referenced in the SLAU579D user's guide for the ADC32J24EVM.

What data output interface does the ADC32J24EVM use?

The ADC32J24EVM outputs digitized data via a 40-pin HSMC connector (J13A/B) compliant with the JESD204B standard. It implements two serialized lanes - one per ADC channel - supporting subclass 1 operation with deterministic latency. The interface delivers 12-bit samples at 125 MSPS per channel over LVDS physical layer signaling, and is designed for direct connection to TI's TSW14J56 pattern generator or FPGA development platforms with JESD204B IP cores. No additional level-shifting or serialization logic is required when interfacing with compatible receivers.