Texas Instruments ADS62P42EVM

Overview

ADS62P42EVM from Texas Instruments is an evaluation module designed to characterize the ADS62P42 dual-channel, 14-bit, 65-MSPS analog-to-digital converter under controlled signal, clock, reference, and power conditions. It supports transformer-coupled or THS4509-amplified analog inputs, multiple clocking paths (direct SMA, VCXO+CDCE72010 with crystal filter or LVPECL), and configurable 3.3V/1.8V digital supply rails. The EVM enables FFT-based performance validation in IF sampling applications up to 100 MHz.

For engineers reviewing the ADS62P42EVM datasheet, ADS62P42EVM pinout, ADS62P42EVM application, or ADS62P42EVM equivalent, this module provides hands-on verification of SNR (73.5 dBFS), SFDR (87 dBc), and ENOB (11.9 bits) for the ADS62P42 under real-world layout, power integrity, and clock jitter conditions - critical for radar front-ends, communications receivers, and instrumentation digitizers.

Technical Context

The ADS62P42EVM implements a dual-path analog input architecture: one path uses Mini-Circuits ADT4-1WT transformers for high-bandwidth (>100 MHz) single-ended-to-differential conversion; the other integrates the THS4509 fully differential amplifier with user-configurable AC/DC coupling and optional band-pass filtering. Power delivery supports cascaded TPS5420D switching regulator + TPS79501 LDO (6–36 V input) or direct LDO-only (5.1–5.5 V) operation, enabling both efficiency and low-noise evaluation modes.

Clock conditioning includes three distinct options: (1) direct 1.5 V_PP sinusoidal clock via J19 into transformer-coupled ADC input; (2) 245.76 MHz LVCMOS clock derived from 983.04 MHz VCXO ÷4 via CDCE72010 with onboard 245.76 MHz crystal filter; or (3) differential LVPECL output from CDCE72010 Y1P/Y1N pins. SPI control of the ADS62P42 register space is supported via TI's ADC SPI interface software and compatible FPGA capture boards like TSW1200.

Key Specifications

Availability

ADS62P42EVM is available at Aetrix Electronics and suitable for RF receiver development, high-speed data acquisition system validation, and ADC performance benchmarking requiring stable component supply across engineering lab, pre-production test, and customer demonstration environments.

Supply support for ADS62P42EVM 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 headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The ADS62P42EVM belongs to TI's precision high-speed ADC evaluation platform family, engineered specifically to accelerate time-to-test for IF-sampling receivers, spectrum analyzers, and software-defined radio front-ends where clock jitter, power rail noise, and analog signal integrity directly impact ENOB and SFDR.

FAQ

What is the primary function of the ADS62P42EVM?

The ADS62P42EVM is a dedicated evaluation module for the ADS62P42 dual-channel, 14-bit, 65-MSPS analog-to-digital converter. It provides a complete, jumper-configurable hardware platform to measure key performance metrics-including SNR, SFDR, and ENOB-under realistic signal chain conditions. The ADS62P42EVM enables engineers to validate the ADS62P42's behavior with transformer-coupled or amplified analog inputs, multiple clock sources, and flexible power delivery before integration into final systems.

Does the ADS62P42EVM support both LVDS and CMOS digital output formats?

Yes, the ADS62P42EVM supports both LVDS and CMOS digital output interfaces from the ADS62P42. This is controlled by jumper JP14: position 3–4 configures the ADS62P42 for LVDS output, while position 1–2 selects CMOS. The ADS62P42EVM's PCB routing and termination match the electrical requirements of each interface, ensuring signal integrity during high-speed data capture using tools like the TSW1200.

Can the ADS62P42EVM be powered from a 5 V supply, and what are the implications?

Yes, the ADS62P42EVM operates in default LDO-only mode with a 5.1–5.5 V supply applied to banana jack J10 (PWR IN). This powers the TPS79633 LDOs to generate clean 3.3 V for ADC analog/digital supplies and CDCE72010. Using 5 V avoids switching noise but limits input range; exceeding 5.5 V risks damage. For higher efficiency or wider input range (6–36 V), jumpers JP16/JP17 must be reconfigured to enable the TPS5420D + TPS79501 cascade - a change requiring careful review of the SLAU237A User's Guide.

How does the ADS62P42EVM handle clock distribution for optimal ADC performance?

The ADS62P42EVM offers three clock paths optimized for different jitter and layout constraints: (1) direct 1.5 V_PP sine wave into J19 (transformer-coupled); (2) 245.76 MHz filtered LVCMOS from CDCE72010 Y0 + onboard crystal filter; or (3) differential LVPECL from CDCE72010 Y1P/Y1N. Path selection is made via surface jumpers SJP4/SJP6/SJP7. The crystal-filtered LVCMOS option is recommended for highest SNR, as it minimizes phase noise while maintaining compatibility with the ADS62P42's AC-coupled clock input structure.

Is the ADS62P42EVM compatible with the TSW1200 capture board?

Yes, the ADS62P42EVM is fully compatible with the TSW1200 capture board. J8 on the ADS62P42EVM provides a standard 40-pin parallel digital output interface with timing-aligned strobes, matching the TSW1200's input requirements. TI's ADC SPI Control Software and TSW1200 GUI allow seamless configuration, data capture, and FFT analysis - including automatic sample rate and input frequency synchronization - as documented in Section 4.1 of the SLAU237A User's Guide.