Texas Instruments ADC3222EVM

Overview

ADC3222EVM from Texas Instruments is an evaluation module designed to assess the ADC3222 - a dual-channel, 12-bit, 50 MSPS serial LVDS-output analog-to-digital converter. It supports transformer-coupled single-ended or differential analog inputs, onboard 1.8-V ADC supply generation, and SPI-based configuration via USB interface. The EVM enables performance validation in high-speed data acquisition systems requiring precise timing and low-noise sampling.

For engineers reviewing the ADC3222EVM datasheet, ADC3222EVM pinout, ADC3222EVM application, or ADC3222EVM equivalent, this page delivers verified hardware configuration options, power path selection guidance, clock input circuit details, software control capabilities via HSDC Pro GUI, and compatibility with TSW1400 data capture platforms.

Technical Context

The ADC3222EVM implements a dual-transformer analog input stage for improved amplitude and phase balance, supporting both AC- and DC-coupled signal paths via resistor swaps on the top layer. It uses a 5-V barrel jack input, regulated down to 1.8 V for the ADC core using either low-noise LDOs (TPS7A4700) or a DC/DC switcher (TPS62080), selectable via JP6/J7 jumpers.

Signal routing includes SMA connectors for analog inputs (J1/J4), clock input (J9/J10), and SYSREF (J11/J12); an HSMC connector (J13A/B) interfaces with TSW1400 for data capture; and a Mini-USB port (J14) provides SPI control. Onboard reset (SW1) and status LED (D1) support basic operation verification.

Key Specifications

Availability

ADC3222EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, communications infrastructure testing, and radar receiver development requiring stable component supply and rapid evaluation turnaround.

Supply support for ADC3222EVM 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 signal chain solutions.

The ADC3222EVM belongs to TI's high-speed ADC evaluation platform family, engineered to accelerate validation of dual-channel, LVDS-output converters in RF sampling, instrumentation, and broadband communication applications.

FAQ

What is the primary function of the ADC3222EVM?

The ADC3222EVM is a hardware evaluation platform for the ADC3222 - a dual-channel, 12-bit, 50 MSPS analog-to-digital converter with serial LVDS outputs. It provides complete signal conditioning, power regulation, clocking, and digital interface circuitry to enable real-world performance characterization of the ADC3222 under controlled lab conditions. The ADC3222EVM itself is not a production component but a design validation tool.

Which ADC device does the ADC3222EVM support?

The ADC3222EVM is specifically designed for the ADC3222, a dual-channel, 12-bit, 50 MSPS sLVDS-output ADC in a 7-mm × 7-mm, 48-pin QFN package. It is not compatible with JESD204B variants (e.g., ADC32Jxx) or quad-channel devices (e.g., ADC34xx). The board's analog input topology, power sequencing, and register mapping in HSDC Pro GUI are optimized exclusively for the ADC3222 and its sLVDS interface.

How is power delivered and regulated on the ADC3222EVM?

The ADC3222EVM accepts 5-V DC input via J15 barrel jack and generates a clean 1.8-V supply for the ADC3222 using either the TPS7A4700 low-noise LDO (default, JP6/J7 set to 1–2) or the TPS62080 DC/DC switcher (JP6/J7 set to 2–3). The 1.8-V rail is isolated from digital noise sources and supports both AC- and DC-coupled input configurations. An onboard LED (D1) confirms 5-V presence.

What software is used to configure and test the ADC3222EVM?

The ADC3222EVM is controlled using Texas Instruments' HSDC Pro GUI software, which provides tabbed access to Common registers (reset, power-down, clock divider), ADC32xx-specific controls (channel gain, dither, chopper, test patterns), and advanced register editing. Firmware and drivers are installed via ADC3xxxx_Installer_vxpx, and communication occurs over Mini-USB (J14) using SPI protocol managed by onboard CPLD.

Can the ADC3222EVM be used for DC-coupled analog input evaluation?

Yes - the ADC3222EVM supports DC-coupled operation via resistor swaps on the top layer per Table 6 in SLAU579D. For DC coupling, R135, R7, R120, R121, R138, R20, R144, and R141 must be installed while removing R3, R4, R14, R18, R142, and R139. This reconfigures the THS4541RGT amplifier stage for direct-current signal path integrity, enabling baseband and low-frequency (<1 MHz) sampling validation.