20-bit: 1-MSPS Isolator Optimized Data Acquisition Reference Design Maximizing SNR and Sample Rate
Description
TIDA-01037 is a 20-bit: 1 MSPS isolated analog input data acquisition reference design that utilizes two different isolator devices to maximize signal chain SNR and sample rate performance. For signals requiring low jitter: such as ADC sampling clocks: TI’s ISO73xx family of low jitter devices are used whereas TI’s high speed ISO78xx family of devices are used to maximize data sample rate. By combing these two isolator solutions: high frequency performance is significantly improved by minimizing sample clock jitter across the isolation boundary: and data throughput is improved by maximizing isolator signaling rate. Additional improvements are realized by utilizing TI’s advanced ADC multiSPITM and source-synchronous features. Finally: all key design theories are described and measured results presented.
Features
- Differential input: isolated: 20-bit: 1-MSPS: Data Acquisition (DAQ) reference designOptimized isolator solution for input signals up to 100 kHzAdditional jitter mitigation circuitry not requiredDemonstrates low SPI clock rates with the TI’s innovative multiSPI™ and source-synchronous mode ADC digital interfacesProvides capaility to evaluate system SNR performance due to sample clock jitterIncludes theory: calculation: component selection: PCB design and measurement results
Applications
- Digital multimeter (DMM)
- Full authority digital engine control (FADEC)
- Lab & field Instrumentation
- Spectrum analyzer
- Data acquisition (DAQ)
- Power analyzer
- Signal generator
- Programmable DC power supply
- Parametric measurement unit (PMU)
- Trackside signaling & control
- Flat panel display (FPD) shorting bar pattern generator
- Ultrasound smart probe
- Ultrasound scanner
Product Categories
- Data converters