Texas Instruments ADS6245EVM

Overview

ADS6245EVM from Texas Instruments is an evaluation module designed to characterize the ADS6245 dual-channel, 14-bit, 65-MSPS analog-to-digital converter under controlled analog input, clock, reference, and power conditions. It supports transformer-coupled and amplifier-based (THS4509) differential signal paths for channels A–D, provides LVDS serialized digital output via a Samtec QSH-060-01-F-D-A connector, and integrates configurable jumpers for gain, serialization ratio (16×), data format (MSB-first, offset binary), and operational mode (DDR, 2-wire).

For engineers reviewing the ADS6245EVM datasheet, ADS6245EVM pinout, ADS6245EVM application, or ADS6245EVM equivalent, this page delivers verified hardware configuration details, jumper-default settings for ADS624x-family ADCs, TSW1200 deserializer interface requirements, coherent sampling guidance, and PCB-level design considerations including 6-layer stackup, analog/digital supply separation, and transformer selection impact on SFDR performance.

Technical Context

The ADS6245EVM implements a dual-channel, high-speed ADC evaluation platform with independent analog input paths for up to four channels (A–D), supporting both transformer-coupled (Mini-Circuits TC4-1W, Coilcraft WBC1-1TLB) and active amplifier-based (THS4509) signal conditioning. It routes serialized LVDS outputs-DCLK_P/M, FCLK_P/M, and data lanes DA0/DA1/DB0/DB1-to a high-density Samtec connector for external capture.

Power delivery is segregated: 3.3 V analog (P3/J22) and 3.3 V digital (P1) supplies are provided via banana jacks, while ±5 V amplifier rails (J21/J23) support dc-coupled THS4509 operation. Surface-mount jumpers (JP1/JP2, J17–J21) configure ADC coarse gain, reference mode, serialization ratio, clock edge alignment, and output data format per ADS624x specifications.

Key Specifications

Availability

ADS6245EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, radar front-end prototyping, and communications receiver development requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for ADS6245EVM 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, with over 90 years of innovation in precision signal chain solutions.

The ADS62xxEVM product line is part of TI's high-speed ADC evaluation ecosystem, engineered to accelerate validation of dual-channel, 12-/14-bit converters in demanding applications such as instrumentation, medical imaging, and broadband communications.

FAQ

What is the primary function of the ADS6245EVM?

The ADS6245EVM is a dedicated evaluation module for the ADS6245 dual-channel, 14-bit, 65-MSPS analog-to-digital converter. It enables engineers to validate ADC performance-including SNR, SFDR, and ENOB-under real-world signal, clock, reference, and supply conditions. The module supports both transformer-coupled and THS4509 amplifier-based analog input paths, provides LVDS serialized digital output via a Samtec connector, and includes configurable jumpers to match ADS6245-specific operating modes. ADS6245EVM does not operate standalone; it requires connection to a deserializer (e.g., TSW1200) or logic analyzer for data capture and analysis.

Which ADC models does the ADS6245EVM support?

The ADS6245EVM is explicitly validated for the ADS6245 and supports the full ADS624x family (ADS6245, ADS6244, ADS6243) as confirmed in TI's SLAU197B User's Guide. It also accommodates ADS622x devices (12-bit variants) via jumper reconfiguration (e.g., J18 serialization setting), though default silkscreen labels and performance data in the guide pertain to ADS624x operation. The EVM's schematic, bill of materials, and jumper tables are designed around the ADS6245's pinout, timing, and LVDS output structure.

How is the ADS6245EVM powered and what supply isolation is implemented?

The ADS6245EVM accepts three independent power inputs: 3.3 V analog (P3), 3.3 V digital (P1), and ±5 V amplifier rails (J21/J23), each with dedicated banana jack returns (P2, P4, and chassis ground). Analog and digital grounds are separated on the 6-layer PCB (Layers 2 and 5 are dedicated ground planes), and ferrite beads (L1/L2/L8/L9) isolate analog and digital power domains. This segregation minimizes noise coupling and maintains ADC performance-particularly critical for achieving >85 dBc SFDR-as documented in TI's test setup using Agilent 8644B sources and LC filtering.

What digital interface options does the ADS6245EVM provide for capturing ADC output?

The ADS6245EVM outputs serialized LVDS data (DA0_P/M, DA1_P/M, DB0_P/M, DB1_P/M), bit clock (DCLK_P/M), and frame clock (FCLK_P/M) via a Samtec QSH-060-01-F-D-A high-density connector (J15). Users may capture this stream using: (1) a logic analyzer with a mating breakout board; (2) a custom digital interface card designed around the same Samtec footprint; or (3) TI's TSW1200 deserializer, which features a preloaded Xilinx Virtex-4 FPGA with 12-/14-bit deserialization firmware. ADS6245EVM does not include on-board deserialization or USB connectivity.

Can the ADS6245EVM be used with amplifiers other than the THS4509?

Yes-the ADS6245EVM's amplifier path for channel C (controlled by JP1/JP2) is designed to accommodate pin-compatible alternatives to the THS4509, including the THS4508, THS4511, THS4513, and THS4520, as stated in TI's SLAU197B. Selection depends on required common-mode range, supply voltage headroom, and bandwidth. For example, THS4513 supports rail-to-rail output and wider supply range, while THS4520 offers higher slew rate. Component values (R9/R18/C46/C47) must be adjusted per amplifier datasheet recommendations to maintain proper biasing and bandwidth limiting.