TIDA-01247

Efficient, LDO-Less, Power-Supply Network Reference Design for RF-Sampling ADC

TIDA-01247

Design files

Overview

This reference design demonstrates a simplified and efficient network to power an ADC32RFxx. All three power domains of the analog-to-digital converter (ADC) are supplied using a switching regulator to enable the use of a power-supply network without a low-dropout (LDO) linear regulator. This configuration improves the overall power efficiency and reduces part count without any degradation to the ADC specifications.

Features
  • Power efficiency increased by more than 10%
  • Power savings of approximately 900 mW
  • Smaller DC/DC solution size and fewer components than LDO-based design
  • Maintains ADC performance metrics
  • Supports single 5-V input

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUCN9.PDF (443 K)

Reference design overview and verified performance test data

TIDRSE8.PDF (127 K)

Detailed schematic diagram for design layout and components

TIDRSE9.PDF (198 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRSF0.ZIP (2072 K)

Detailed overview of design layout for component placement

TIDRSF2.ZIP (1599 K)

Files used for 3D models or 2D drawings of IC components

TIDCDR8.ZIP (2422 K)

Design file that contains information on physical board layer of design PCB

TIDRSF1.PDF (1963 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

High-speed ADCs (>10MSPS)

ADC32RF45Dual-channel, 14-bit, 3-GSPS, RF-sampling analog-to-digital converter (ADC)

Data sheet document-pdfAcrobat PDF open-in-new HTML
Auto-direction voltage translators

TXB01044-Bit Bidirectional Voltage-Level Shifter with Auto Direction Sensing and +/-15 kV ESD Protect

Data sheet document-pdfAcrobat PDF
Buck converters (integrated switch)

TPS620853-A Step-Down Converter with DCS-Control and Hiccup Short Circuit Protection in 2x2 HotRod Package

Data sheet document-pdfAcrobat PDF open-in-new HTML
Clock jitter cleaners & synchronizers

LMK04828Ultra low-noise JESD204B compliant clock jitter cleaner with integrated 2370 to 2630-MHz VCO0.

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7A471-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD18532Q5B60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 3.2 mOhm

Data sheet document-pdfAcrobat PDF open-in-new HTML
RF PLLs & synthesizers

LMX25825.5-GHz high performance, wideband PLLatinum RF synthesizer

Data sheet document-pdfAcrobat PDF open-in-new HTML
eFuses & hot swap controllers

TPS24005.5-V over voltage protection controller with 100-V input transient protection

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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* Design guide Efficient, LDO-Less, Power Supply Network Reference Design for RF-Sampling ADC Nov. 22, 2016

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