Efficient, LDO-Less, Power-Supply Network Reference Design for RF-Sampling ADC TIDA-01247 (ACTIVE)

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Key Document

Description

TI Design TIDA-01247 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 the 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

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Design Files

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADC32RF45  Dual-Channel, 14-Bit, 3-GSPS RF-Sampling Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
CSD18532Q5B  60V, N ch NexFET MOSFET™, single SON5x6, 3.2mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LMK04828  Ultra-low jitter synthesizer & jitter cleaner  Clock jitter cleaners  Sample & Buy View Design Kits & Evaluation Modules
LMX2582  High Performance, Wideband PLLatinum RF Synthesizer  Clock & timing  Sample & Buy View Design Kits & Evaluation Modules
TPS2400  5.5V overvoltage protection controller with 100V input transient protection  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS62085  3-A Step-Down Converter with DCS-Control and Hiccup Short Circuit Protection in 2x2 HotRod Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS7A47  36-V, 1-A, 4.17-μVRMS, RF low-dropout (LDO) voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TXB0104  4-Bit Bidirectional Voltage-Level Shifter with Auto Direction Sensing and +/-15 kV ESD Protect  Voltage level translation  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18532Q5B VSON-CLIP (DNK)| 8 Download Download
LMK04828 Download Download
LMX2582 Download
TPS2400 Download Download
TPS62085 Download Download
TPS7A47 Download Download
TXB0104 (GXU) | 12 Download -
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Technical Documents

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Datasheet (1)
Title Type Size (KB) Date
PDF 7308 06 Dec 2016
User guides (1)
Title Type Size (KB) Date
PDF 443 22 Nov 2016
Design files (6)
Title Type Size (KB) Date
ZIP 2422 22 Aug 2017
ZIP 1599 22 Aug 2017
PDF 1963 22 Aug 2017
ZIP 2072 22 Aug 2017
PDF 198 22 Aug 2017
PDF 127 22 Aug 2017

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