High Perf Single Ended to Diff Active Interface for High Speed ADC Developed by Dallas Logic Corp

(ACTIVE) TIDA-00294

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Key Document

Description

This reference design uses the ADC34J22 12b 50Msps JESD204B data converter and the THS4541 fully differential amplifer to demonstrate how to design a high performance active interface for high speed ADCs.  This type of circuit can be used in sensor front end, motor control, and test and measurement applications.  The circuit model and derivation of the design equations is presented along with the actual implementation on a PCB.  Results of this implementation are presented to show very similar performance as compared to a passive AC coupled transformer interface.

Features
  1. Provide a circuit model and schematic for the implementation of a single to differential active interface using a Fully Differential Amplifier
  2. Derive the design equations used to solve for the surrounding components around the circuit implementation
  3. Compare results obtained with the passive AC coupled transformer interface and the active DC fully differential amplifier interface.


  



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Part Number Buy from Texas Instruments or Third Party Status

DEV-ADC34J22:
DEV-ADC34J22 4-channel 50MSPS ADC Evaluation Module


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TI Devices (12)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADC32J22  Dual-Channel, 12-Bit, 50-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADC32J23  Dual-Channel, 12-Bit, 80-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADC32J24  Dual-Channel, 12-Bit, 125-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADC32J25  Dual-Channel, 12-Bit, 160-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADC32J42  Dual-Channel, 14-Bit, 50-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADC32J43  Dual-Channel, 14-Bit, 80-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADC32J44  Dual-Channel, 14-Bit, 125-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADC32J45  Dual-Channel, 14-Bit, 160-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADC34J22  Quad-Channel, 12-Bit, 50-MSPS Analog-to-Digital Converter (ADC)  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
THS4541  High-Speed Differential I/O Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
THS4541-Q1  Automotive High-Speed Differential I/O Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS7A8101  Low-Noise, High-Bandwidth PSRR, Low-Dropout 1-A Linear Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADC32J22 Download
ADC32J23 Download
ADC32J24 Download
ADC32J25 Download
ADC32J42 Download
ADC32J43 Download
ADC32J44 Download
ADC32J45 Download
ADC34J22 Download Download
THS4541 Download -
Download
THS4541-Q1 Download
TPS7A8101 Download Download

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Technical Documents
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 560 20 Aug 2014 8
Design files (3)
Title Abstract Type Size (KB) Date Views
PDF 3003 20 Aug 2014 2
PDF 87 20 Aug 2014 3
PDF 298 20 Aug 2014 4

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