Texas Instruments ADC34J45EVM

Overview

ADC34J45EVM from Texas Instruments is an evaluation module designed to assess the ADC34J45 - a quad-channel, 14-bit, JESD204B-compliant analog-to-digital converter with 160 MSPS sampling rate, single 1.8-V supply operation, and onboard LMK04828 clock generator for deterministic SYSREF timing in high-speed data acquisition systems.

For engineers reviewing the ADC34J45EVM datasheet, ADC34J45EVM pinout, ADC34J45EVM application, or ADC34J45EVM equivalent, this page delivers verified hardware configuration options, JESD204B lane setup guidance, DC/AC-coupling resistor swap instructions, USB-SPI GUI control details, and power architecture validation for rapid prototyping of radar, communications, and instrumentation signal chains.

Technical Context

The ADC34J45EVM implements a transformer-coupled, dual-balun analog input path supporting both AC- and DC-coupled configurations via resistor swaps on channels B and C. It integrates the LMK04828 ultra-low-jitter clock conditioner to generate synchronized ADC sampling clocks and SYSREF signals required for multi-device JESD204B system alignment.

Power delivery uses a dual-path architecture: a TPS62080 buck converter steps 5 V down to 2.8 V and 4 V, feeding two TPS7A4700 low-noise LDOs that produce 1.8 V for the ADC34J45 and 3.3 V for the LMK04828 and CPLD - all configurable via JP9/J10 (1.8 V) and JP12/J13 (3.3 V) jumpers.

Key Specifications

Availability

ADC34J45EVM is available at Aetrix Electronics and suitable for high-speed test equipment, phased-array radar receivers, 5G massive MIMO baseband verification, and wideband spectrum analyzers requiring stable component supply and full JESD204B evaluation capability.

Supply support for ADC34J45EVM 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 conversion technologies.

The ADC34J45EVM belongs to TI's high-speed data converter evaluation platform family, engineered specifically to accelerate development of JESD204B-based systems requiring precise timing, multi-channel coherence, and flexible analog front-end configuration.

FAQ

What is the primary function of the ADC34J45EVM?

The ADC34J45EVM is a dedicated evaluation module for the ADC34J45 - a quad-channel, 14-bit, 160 MSPS JESD204B analog-to-digital converter. It provides complete hardware and software infrastructure to validate performance, configure registers, verify timing alignment, and interface with data capture tools like the TSW14J56. The ADC34J45EVM enables full characterization of the ADC34J45 under real-world conditions including jitter-sensitive applications and multi-device synchronization scenarios.

Does the ADC34J45EVM include an onboard clock generator?

Yes, the ADC34J45EVM integrates the LMK04828 ultra-low-jitter clock conditioner to generate synchronized sampling clocks and SYSREF signals required for JESD204B subclass 1 compliance. This eliminates the need for external clock sources during initial evaluation and ensures deterministic latency across all four ADC channels. The LMK04828 is powered by a dedicated 3.3-V LDO and controlled via the ADC34J45EVM GUI through its dedicated tab in HSDC Pro software.

How do I configure the ADC34J45EVM for DC-coupled analog inputs?

To enable DC coupling on the ADC34J45EVM, install resistors R137, R216, R225, R227, R228, R218, R232, and R235 while removing R217, R258, R226, R219, R233, and R234 - as specified in Table 7 of the SLAU579D user's guide. These modifications apply to channels B and C only, and the THS4541RGT amplifiers are pre-installed on the board. No bottom-side component placement is required, unlike earlier ADC32xxEVM revisions.

Which software is used to control the ADC34J45EVM?

The ADC34J45EVM is controlled using Texas Instruments' HSDC Pro software, installed via the ADC3xxxx_Installer_vxpx package. The GUI provides separate tabs for common registers, ADC34Jxx-specific settings (gain, dither, chopper, test patterns), and full LMK04828 configuration - enabling comprehensive evaluation without manual register writes. Communication occurs over mini-USB using an integrated SPI bridge, and drivers install automatically upon first connection.

Can the ADC34J45EVM be used with other TI high-speed data converters?

No - the ADC34J45EVM is mechanically and electrically optimized exclusively for the ADC34J45 and closely related ADC34Jxx devices (e.g., ADC34J42/43/44). Its layout, power sequencing, clock routing, and HSMC pin mapping align precisely with the 48-pin QFN package and JESD204B lane count of the ADC34J45. While the broader ADC3xxxEVM family shares design concepts, each EVM variant corresponds to a specific device or narrow variant group as defined in Table 1 of SLAU579D.