Texas Instruments ADS62P29EVM

Overview

ADS62P29EVM from Texas Instruments is an evaluation module designed to characterize the ADS62P29 dual-channel, 12-bit, 250-MSPS analog-to-digital converter under real-world signal, clock, reference, and power supply conditions. It supports transformer-coupled or THS4509-amplified analog inputs, multiple clocking paths (direct SMA, crystal-filtered LVCMOS, or differential LVPECL), and configurable 1.8-V/3.3-V digital/analog supply rails.

For engineers reviewing the ADS62P29EVM datasheet, ADS62P29EVM pinout, ADS62P29EVM application, or ADS62P29EVM equivalent, this module enables rapid ADC performance validation-including SNR, SFDR, and jitter sensitivity-using TSW1200 capture, SPI register control, coherent FFT testing, and isolated supply current measurement.

Technical Context

The ADS62P29EVM implements a flexible front-end architecture with dual independent analog input paths: one transformer-coupled (J3/J6) and one amplifier-based (THS4509 with J3/J9), both supporting AC- or DC-coupled configurations. Jumpers (e.g., SJP1–SJP5, JP11–JP14) configure operational mode (parallel vs. SPI), gain, reference selection, and data format (LVDS/CMOS).

Clock delivery includes three validated options: direct single-ended clock via J19 (AC-coupled through ADT4-1WT transformer), crystal-filtered 245.76 MHz LVCMOS output from CDCE72010 (Y0 pin, factory-programmed ÷4), or differential LVPECL (Y1P/Y1N). Power is delivered via banana jacks (J10, J11, J13) with cascaded TPS5420D + TPS79501 or LDO-only (TPS79633/TPS79601) topologies for AVDD/DVDD.

Key Specifications

Availability

ADS62P29EVM is available at Aetrix Electronics and suitable for high-speed data acquisition systems, communications test equipment, and radar receiver development requiring stable component supply, fast evaluation turnaround, and traceable sourcing of TI-qualified hardware.

Supply support for ADS62P29EVM 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 analog products for industrial, automotive, and communications applications.

The ADS62P29EVM belongs to TI's precision high-speed ADC evaluation platform family, engineered to accelerate time-to-test for RF-sampling and IF-digitization applications demanding sub-0.1 dB gain matching and <−90 dBc SFDR.

FAQ

What is the primary function of the ADS62P29EVM?

The ADS62P29EVM is a dedicated evaluation module for the ADS62P29 dual-channel, 12-bit, 250-MSPS analog-to-digital converter. It provides configurable analog input paths (transformer-coupled or THS4509-amplified), multiple clocking options (direct, crystal-filtered LVCMOS, or differential LVPECL), and flexible power delivery (cascaded switching + LDO or LDO-only) to validate ADC performance metrics including SNR, SFDR, and jitter sensitivity under realistic operating conditions. The ADS62P29EVM enables full characterization of the ADS62P29 without custom PCB design.

Which ADCs does the ADS62P29EVM support besides the ADS62P29?

The ADS62P29EVM is part of the ADS62PXXEVM platform and supports the full ADS62PXX family, including ADS62P22/23/24/25/28/29, ADS62P42/43/44/45/48/49, and ADS62C15/17. Jumper configurations (e.g., JP15/JP18 for AVDD/DVDD voltage selection, JP14 for LVDS/CMOS output format) must be adjusted per device requirements-ADS62P29 specifically requires 1.8-V DVDD and 3.3-V AVDD, set via JP18 (1-2) and JP15 (1-2) in default LDO mode.

How do I configure the ADS62P29EVM for transformer-coupled analog input?

To configure the ADS62P29EVM for transformer-coupled analog input, retain the default jumper settings: SJP1 (1-2), SJP2 (1-2), SJP3 (no shunt), SJP5 (1-2), and JP3 (2-3). Apply a 0-V offset, –1 dBFS amplitude sine wave from a 50-Ω function generator to J6 (Channel A) or J3 (Channel B). The signal passes through dual 1:1 transformers (ADT1-1WT) for optimal differential conversion before reaching the ADS62P29. No amplifier biasing or external filtering is required in this mode.

What clock sources are validated for use with the ADS62P29EVM?

The ADS62P29EVM validates three clock sources: (1) Direct single-ended sinusoidal clock (1.5 VPP, 0-V offset) applied to J19, converted to differential by ADT4-1WT; (2) Crystal-filtered 245.76 MHz LVCMOS output from CDCE72010 Y0 pin (factory-programmed ÷4 from 983.04 MHz VCXO, reference clock 20 MHz on J19); (3) Differential LVPECL output (Y1P/Y1N) at same frequency. Option 2 is recommended for highest spectral purity; VCXO and crystal filter components are not populated by default and must be added per application.

Can the ADS62P29EVM be used for power supply current measurements?

Yes-the ADS62P29EVM supports isolated AVDD and DVDD current measurement via Power Supply Option 3. Remove shunts from JP15 and JP18, then apply separate 3.3-V and 1.8-V supplies directly to the center posts of those jumpers (with adjacent ground posts provided). This bypasses onboard regulators and allows direct current sensing per rail using external ammeters. Caution: reverse polarity or overvoltage will damage the board; verify polarity and voltage limits before connection.