Texas Instruments ADS62P45EVM

Overview

ADS62P45EVM from Texas Instruments is an evaluation module designed to characterize the ADS62P45 dual-channel, 14-bit, 125-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 options (direct SMA, crystal-filtered LVCMOS, or differential LVPECL), and configurable 3.3V/1.8V digital supply rails.

For engineers reviewing the ADS62P45EVM datasheet, ADS62P45EVM pinout, ADS62P45EVM application, or ADS62P45EVM equivalent, this module enables rapid ADC performance validation-including SNR, SFDR, and ENOB-using coherent sine-wave stimuli, FFT-based analysis, and TSW1200 data capture integration.

Technical Context

The ADS62P45EVM implements a flexible front-end architecture with jumper-selectable analog input paths: default transformer-coupled single-ended inputs (J3/J6) or THS4509-based differential amplification with AC/DC coupling support. Power delivery includes cascaded TPS5420D + TPS79501 (6–36 V input) or LDO-only (5.1–5.5 V) topologies, each generating independent AVDD (3.3 V or 5 V) and DVDD (3.3 V or 1.8 V) rails per ADS62P45 requirements.

Clock routing supports three modes: direct external clock via J19 (AC-coupled, transformer-isolated), crystal-filtered 245.76 MHz LVCMOS output from CDCE72010 (factory-configured ÷4 from 983.04 MHz VCXO), or differential LVPECL output (Y1P/Y1N). SPI control of ADS62P45 registers is enabled via JP11/JP9/JP10 jumpers, while parallel-mode operation is default.

Key Specifications

Availability

ADS62P45EVM is available at Aetrix Electronics and suitable for high-speed data acquisition systems, communications test equipment, and radar receiver development requiring stable component supply and repeatable ADC characterization.

Supply support for ADS62P45EVM 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 electronics.

The ADS62P45EVM belongs to TI's high-speed ADC evaluation platform family, engineered specifically to accelerate time-to-test for RF-sampling and IF-digitization applications in defense, wireless infrastructure, and instrumentation.

FAQ

What is the primary function of the ADS62P45EVM?

The ADS62P45EVM is an evaluation module built to assess the performance of the ADS62P45 dual-channel, 14-bit, 125-MSPS analog-to-digital converter. It provides configurable analog input paths, multiple clocking architectures, and flexible power delivery to validate key metrics including SNR, SFDR, and spurious-free dynamic range under real-world signal conditions. The ADS62P45EVM enables engineers to verify ADS62P45 behavior before integration into final systems.

Which ADC variants does the ADS62P45EVM support besides ADS62P45?

The ADS62P45EVM supports the full ADS62PXX family, including ADS62P42/43/44/48/49, ADS62P22/23/24/25/28/29, and ADS62C15/17 converters. All share identical PCB layout, jumper configuration logic, and signal chain topology. The ADS62P45EVM accommodates differing DVDD requirements (3.3 V for ADS62P45 vs. 1.8 V for ADS62P48/49) via JP15/JP18 jumper settings and optional resistor/capacitor changes on R269/C148.

How does the ADS62P45EVM handle clock signal integrity for high-SFDR testing?

The ADS62P45EVM maintains clock integrity through three dedicated paths: direct SMA input (J19) with Mini-Circuits ADT4-1WT transformer isolation; crystal-filtered 245.76 MHz LVCMOS output from the factory-programmed CDCE72010 (÷4 from 983.04 MHz VCXO); and differential LVPECL output (Y1P/Y1N). Each path uses surface-mount 0Ω resistors in critical signal paths and separate ground planes to minimize jitter coupling. The ADS62P45EVM's design ensures sub-0.2 ps RMS jitter contribution to enable >75 dBc SFDR validation.

Can the ADS62P45EVM be used with the TSW1200 capture board?

Yes, the ADS62P45EVM is fully compatible with the TSW1200 capture board via the J8 LVDS/CMOS data interface connector. The TSW1200 software includes a dedicated TI ADC Selection menu that recognizes ADS62P45 and auto-configures sample rate, input frequency, and FFT parameters. When powered from the TSW1200's 5 V output (via JP8/J22 jumper settings), the ADS62P45EVM eliminates external supplies and synchronizes clock/data capture - enabling out-of-box FFT analysis as documented in Section 4.1 of SLAU237A.

What are the default power supply settings for the ADS62P45EVM?

The ADS62P45EVM ships with Option 2 (LDO-only) as default: 5 V applied to banana jack J10 powers the TPS79633 LDOs to generate 3.3 V AVDD and 3.3 V DVDD for the ADS62P45. JP16 is set to 1–2 (TPS79501 input from J10), JP19 to 1–2 (5V_AUX tied to J10), and JP17 unshunted (TPS5420 disabled). This configuration delivers ultra-low-noise rails optimized for maximum SNR - matching the ADS62P45's specified 73.8 dBFS SNR at 125 MSPS with 170 MHz input.