18-bit: 2-Msps Isolated Data Acquisition Reference Design to Achieve Maximum SNR and Sampling Rate
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
Applications
- Digital multimeter (DMM)
- Flat panel
- Process analytics
- CPU (PLC Controller)
- Communication module
- Robot CPU and compute board
- Telemetry & RTUs
- CNC control
- Lab & field Instrumentation
- Data acquisition (DAQ)
- Key panel
- Laser distance meter
- Parametric measurement unit (PMU)
- Trackside signaling & control
- Flat panel display (FPD) shorting bar pattern generator
- Robot teach pendant (HMI)
- Stand-alone remote IO
- Safety area scanner
- Safety light curtain
- Mobile robot CPU & compute module
- Mobile robot motor control
- HMI panel
Product Categories
- Data converters
| Part Number | Name | Companion Part | |
|---|---|---|---|
| ISO1541 | ISO1541 | Buy Datasheet | |
| LMZ14203 | LMZ14203 | Buy Datasheet | |
| OPA376 | OPA376 | Buy Datasheet | |
| OPA378 | OPA378 | Buy Datasheet | |
| REF5045 | REF5045 | Buy Datasheet | |
| SN65LVDS4 | SN65LVDS4 | Buy Datasheet | |
| SN74LVC1G08 | SN74LVC1G08 | Buy Datasheet | |
| SN74LVC1G17 | SN74LVC1G17 | Buy Datasheet | |
| TLV3012 | TLV3012 | Buy Datasheet |
| Download the bill of materials for TIDA-00732 | Download |
| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00732 CAD Files (Rev. A) | 03 Jun 2016 | ZIP | 25672 | |
| TIDA-00732 Schematic and Block Diagram (Rev. A) | 03 Jun 2016 | 3438 | ||
| TIDA-00732 Gerber | 04 Apr 2016 | ZIP | 681 | |
| TIDA-00732 PCB Layer Plots | 04 Apr 2016 | 3526 | ||
| TIDA-00732 Assembly Drawing | 04 Apr 2016 | 467 | ||
| TIDA-00732 BOM | 04 Apr 2016 | 80 |