Texas Instruments ADS62P25EVM

Overview

ADS62P25EVM from Texas Instruments is an evaluation module designed to characterize the ADS62P25 dual-channel, 12-bit, 65-MSPS analog-to-digital converter under controlled signal, clock, reference, and power supply conditions. It supports transformer-coupled or THS4509-amplified analog inputs, multiple clocking paths (direct SMA, VCXO + CDCE72010 with crystal filter), and configurable 3.3V/1.8V digital supply rails. The EVM enables FFT-based performance validation in IF-sampling receiver applications.

For engineers reviewing the ADS62P25EVM datasheet, ADS62P25EVM pinout, ADS62P25EVM application, or ADS62P25EVM equivalent, this page provides verified hardware configuration options, jumper-defined operational modes (parallel vs. SPI control), clock distribution topology, analog input routing paths, and power architecture details essential for ADC evaluation setup and signal integrity validation.

Technical Context

The ADS62P25EVM implements a modular signal chain architecture: analog inputs route through Mini-Circuits ADT4-1WT transformers or THS4509 differential amplifiers before reaching the ADS62P25; clock signals enter via J19 and are either directly coupled to the ADC or conditioned by an onboard CDCE72010 programmable clock buffer driving a 245.76 MHz crystal-filtered LVCMOS output or differential LVPECL output.

Power delivery supports three configurations: Option 1 uses cascaded TPS5420D switching regulator + TPS79501 LDO for 6–36 V input with ultra-low ripple; Option 2 employs dual TPS796xx LDOs for 5.1–5.5 V input (default); Option 3 isolates AVDD/DVDD for current consumption measurement. All configurations maintain strict separation between analog and digital ground planes per TI's high-speed ADC layout guidelines.

Key Specifications

Availability

ADS62P25EVM is available at Aetrix Electronics and suitable for RF receiver development, high-speed data acquisition system validation, and IF-sampling ADC characterization requiring stable component supply and traceable evaluation hardware.

Supply support for ADS62P25EVM 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 leadership in precision ADCs and evaluation platforms.

The ADS62P25EVM belongs to TI's high-speed ADC evaluation module family, engineered specifically to accelerate time-to-test for IF-sampling receivers in communications infrastructure, radar, and instrumentation applications.

FAQ

What is the default clock configuration for the ADS62P25EVM?

The default clock configuration for the ADS62P25EVM supplies a single-ended sinusoidal clock directly to SMA connector J19, which is converted to differential and AC-coupled to the ADS62P25 via Mini-Circuits ADT4-1WT transformer. Jumpers SJP4=1-2, SJP7=1-2, and SJP6=1-2 enable this path, and J18 remains unshunted (VCXO disabled). This configuration requires an external low-jitter source with ~1.5 VPP amplitude and coherent frequency alignment with the analog input for valid FFT analysis. The ADS62P25EVM ships with this setup preconfigured.

How do I configure the ADS62P25EVM for THS4509-amplified analog input?

To use the THS4509 amplifier on the ADS62P25EVM, install jumpers SJP1=2-3 (AMPOUT+), SJP2=2-3 (AMPOUT−), SJP3=2-3 (+ve input), and SJP5=2-3 (−ve input), while setting JP3=1-2 to enable the amplifier. Power the THS4509 with 5 V on J11 and GND on J13 for AC-coupled operation. Connect the signal to J3 (Channel B) or J9 (optional differential input), and ensure R62 is installed and R63 removed per Table 5. The ADS62P25EVM then routes the amplified, filtered output to the ADC - enabling wideband signal conditioning not possible with passive transformer coupling alone.

Can the ADS62P25EVM support both 3.3V and 1.8V digital supply voltages for the ADS62P25?

Yes, the ADS62P25EVM supports both 3.3 V and 1.8 V DVDD for the ADS62P25. By default, it delivers 3.3 V to DVDD (required for ADS62P25), configured via TPS79633 LDO. To switch to 1.8 V (for other ADS62PXX variants like ADS62P28/29), replace resistor R269 and capacitor C148 with values specified in the ADS62P25EVM User's Guide (SLAU237A). The ADS62P25EVM ships with the correct DVDD voltage for the installed ADC, and no field modification is needed unless changing the target device.

What power supply options does the ADS62P25EVM offer, and how do they differ?

The ADS62P25EVM offers three jumper-selectable power topologies: Option 1 (JP16=1-2, JP17=1-2) uses TPS5420D + TPS79501 for 6–36 V input with high efficiency and ultra-low ripple; Option 2 (JP16=1-2, JP19=1-2, JP17=open) uses dual TPS796xx LDOs for 5.1–5.5 V input (default, lowest noise); Option 3 (JP15/JP18 open, external 3.3 V/1.8 V applied) isolates AVDD/DVDD for precise current consumption measurement. Each option maintains separate analog/digital ground planes and complies with TI's high-speed ADC power integrity requirements as implemented on the ADS62P25EVM.

How is SPI control enabled on the ADS62P25EVM for the ADS62P25?

SPI control of the ADS62P25 on the ADS62P25EVM is enabled by opening JP11 (disabling parallel reset), then installing jumpers JP9=1-2 (SDATA), JP10=1-2 (SEN), and JP8=1-2 (SCLK) to connect the TI ADC SPI interface header J21 to the ADS62P25 control pins. The CDCE72010 clock buffer must remain powered (J14 open) and configured via its internal EEPROM. Software control requires installation of TI's ADC SPI Control software and proper USB enumeration. This mode replaces jumper-based static configuration with dynamic register-level control - critical for evaluating complex ADC features like gain/offset calibration or test pattern generation on the ADS62P25EVM.