Texas Instruments ADC32J23EVM

Overview

ADC32J23EVM from Texas Instruments is an evaluation module designed to assess the ADC32J23 - a dual-channel, 12-bit, JESD204B-compliant analog-to-digital converter with 80 MSPS sampling rate, 1.8-V single-supply operation, and onboard LMK04828 clock generator for deterministic SYSREF timing. It supports transformer-coupled or DC-coupled analog inputs and interfaces via HSMC to TSW14J56 data capture platforms.

For engineers reviewing the ADC32J23EVM datasheet, ADC32J23EVM pinout, ADC32J23EVM application, or ADC32J23EVM equivalent, this page delivers verified hardware configuration options, power supply routing details, JESD204B lane setup guidance, and software-controlled register access through the HSDC Pro GUI - all critical for high-speed ADC validation in radar, communications, and instrumentation systems.

Technical Context

The ADC32J23EVM implements a dual-ADC signal chain with two independent 12-bit, 80-MSPS JESD204B lanes (lane 0 and lane 1), each supporting subclass 1 deterministic latency. It integrates the LMK04828 ultra-low-jitter clock conditioner to generate synchronized ADC sampling clocks and SYSREF signals, enabling multi-device time alignment.

Power architecture uses a 5-V input routed through a TPS62080 buck converter and TPS7A4700 low-noise LDOs to deliver regulated 1.8 V to the ADC and 3.3 V to the LMK04828. Input signal conditioning includes dual 1:1 transformers for balanced differential drive, configurable AC/DC coupling via resistor swaps, and SMA-based single-ended or differential clock and analog input paths.

Key Specifications

Availability

ADC32J23EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, phased-array radar receiver validation, 5G NR fronthaul testing, and wideband communications system prototyping requiring stable component supply and full evaluation infrastructure support.

Supply support for ADC32J23EVM 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 technologies.

The ADC32J23EVM belongs to TI's high-speed ADC evaluation platform family, engineered specifically to accelerate JESD204B-based system integration for demanding applications in defense electronics, wireless infrastructure, and test equipment.

FAQ

What is the primary function of the ADC32J23EVM?

The ADC32J23EVM is a dedicated evaluation module for the ADC32J23 dual-channel, 12-bit, 80-MSPS JESD204B ADC. It provides complete signal chain validation including analog input conditioning, clock generation via LMK04828, JESD204B lane transmission, and SPI-based register control - all implemented on a single PCB with documented jumper and resistor configuration options. The ADC32J23EVM enables rapid characterization of dynamic performance metrics such as SNR, SFDR, and jitter sensitivity under real-world conditions.

Does the ADC32J23EVM support DC-coupled analog inputs?

Yes, the ADC32J23EVM supports DC-coupled analog inputs. Per Section 1.5.2 of the SLAU579D user's guide, DC coupling is enabled by swapping specific surface-mount resistors near the baluns for channels B and C (R137, R216, R225, R227–R228, R218, R232, R235 installed; R217, R258, R226, R219, R233, R234 removed). This configuration bypasses AC-blocking capacitors and routes baseband signals directly to the ADC32J23 input buffers, preserving low-frequency content down to DC.

Which clock sources does the ADC32J23EVM support?

The ADC32J23EVM supports both onboard and external clocking. Its default mode uses the integrated LMK04828 clock generator to produce low-jitter sampling clocks and aligned SYSREF signals. An external clock may be applied via the EXT_ADC_CLK SMA connector (J9) when using the ADC32J23 in standalone clock distribution or when validating external clock tree performance. Both paths are validated in the user's guide test procedures and supported in the HSDC Pro GUI.

How is the ADC32J23EVM powered, and what are the voltage rails?

The ADC32J23EVM accepts 5 V ±5% via the J20 barrel jack, with a minimum 3-A supply rating. Internally, it generates two regulated rails: 1.8 V for the ADC32J23 core (from TPS7A4700 LDO fed by TPS62080 buck) and 3.3 V for the LMK04828 and CPLD (same LDO architecture). Jumpers JP9/JP10 and JP12/JP13 allow users to bypass LDOs and use switched-mode outputs directly - configuration details are specified in Table 2 of SLAU579D.

What software is used to control the ADC32J23EVM?

The ADC32J23EVM is controlled using Texas Instruments' HSDC Pro GUI software, installed via the ADC3xxxx_Installer_vxpx package. The GUI provides the ADC32Jxx tab for full register-level access - including dither enable/disable per channel, digital gain (0–6 dB), chopper control, test pattern selection, SYSREF alignment, and JESD204B lane configuration. Communication occurs over USB Mini-B (J18), with drivers installed automatically during first connection.