TIPD167
Phase Compensated 8-Ch Multiplexed Data Acquisition System for Power Automation Reference Design
TIPD167
Overview
This TI Verified Design provides the theory, component selection, TINA-TI simulations, Verification & Measurement Performance, Altium Schematics, PCB Layout for a Phase Compensated 8-Ch Multiplexed Data Acquisition System for Power Automation. The design uses a 16-bit, 8-Channel, 500ksps SAR ADC, ADS8688 with integrated analog front-end circuit for ease of system hardware design.
The design introduces the concept of phase and phase Compensation, compares the additional phase delay introduced between the input channels of a non-simultaneous sampling ADC with a simultaneous sampling ADC, and provides a optimal algorithm to compensate for the phase delay introduced in a non-simultaneous implementation.
Measured results demonstrate how the phase compensation algorithm used in this design compensates for the additional phase delay introduced by a multiplexed ADC, resulting in an equivalent performing solution as compared to a simultaneous sampling ADC solution.
Features
- Verified Design Contains Theory, Component Selection, TINA-TI Simulation, Verification & Measured Performance, Altium Schematics and PCB Layout
- ADS8688: 16-Bit, 500-kSPS, 8-Channel, Single-Supply, SAR ADC with Multiplexed and Bipolar Input
- Single-ended sinusoidal input with amplitude of = ±10V and typical = 50 Hz
- 0.002036 degree compensated phase difference
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
Detailed schematic diagram for design layout and components
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Design file that contains information on physical board layer of design PCB
Products
Includes TI products in the design and potential alternatives.
Start development
Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | Phase-Compensated 8-Ch Multiplexed Data Acquisition System for Power Automation (Rev. B) | Mar. 12, 2015 |
Support & training
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