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Texas Instruments LMZ14203 | Demoboard TIDA-00732
18-bit, 2-Msps Isolated Data Acquisition Reference Design to Achieve Maximum SNR and Sampling Rate
Overview
| Topology | Buck Converter |
| Input voltage | 12 V |
| Output 1 | 5 V |
| IC revision | A |
Description
This “18-bit, 2-Msps Isolated Data Acquisition Reference Design to achieve maximum SNR and sampling rate” illustrates how to overcome performance-limiting challenges typical of isolated data acquisition system design:Maximizing sampling rate by minimizing propagation delay introduced by digital isolatorMaximizing high-frequency AC signal chain performance (SNR) by effectively mitigating ADC sampling clock jitter introduced by the digital isolator
Features
18-Bit, 2Msps, 1-Ch, differential input, isolated data acquisition (DAQ) systemLeverages multiSPI™ digital interface of ADS9110 to achieve 2MSPS sampling rate while maintaining a low SPI data rateSource synchronous SPI data transfer mode to minimize isolator propagation delay and improve sampling rateTechniques to reduce Isolator-induced jitter resulting in 12dB improvement in SNR (100kHz Fin, 2-MSPS)Tested design includes theory and calculations, component selection, PCB design, and measurement results
Typical applications
- Modular DAQ Systems
- Design Validation and Verification
- Remote Process Monitoring and Control
- Data Logging
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | VIN | VOut1(V) | IOut1(A) | Type of Insulation | fswitch(kHz) | ∫Udt(Vµs) | NPRI : NSEC | L(µH) | VT(V (RMS)) | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PPTI Push-Pull Transformers, 5 V (DC), 5 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 5 V (DC) | Output Voltage 15 V | Output Current 11 A | Type of InsulationReinforced | Switching Frequency 150 - 800 | Voltage-µSecond46 Vµs | Turns Ratio1:1.1 | Inductance440 µH | Insulation Test Voltage5000 V (RMS) | Length12.32 mm | Width15.41 mm | Height11.89 mm | MountSMT |