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TIPD114
Data acquisition at 1-KHz AC, 1-mW 18-bit 1-MSPS reference design
TIPD114
Overview
This verified design provides results of a low power, low throughput use case of ADS8881. One of the ways to reduce power for a low throughput application is to select a high throughput (1 MSPS) part and run it at low speed. The power consumed by ADS8881 is 55uW for 10kSPS. The reference drive and the input drive needs to be optimized for low power too. This design covers the various tradeoff's that need to be made and the choices to pick from, in order to bring the overall system power down to 1 mW.
Features
- 18 Bit, 10ksps Sampling Rate
- 1kHz AC
- Optimization: Ultra Low Power
- Power: 1mW @ AVDD =3.3V
- Utilizes ADS8881 (18bit, 1Msps SAR ADC), OPA2333 (Input), OPA313 + REF3325 (Reference)
- Theory
- Component Selection
- TINA-TI Simulation
- Schematics and PCB Layout
- Verification and Measured Performance
- Modification Options
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.
TIDR209.PDF (109 K)
Detailed schematic diagram for design layout and components
SLAC584.ZIP (2181 K)
Detailed schematic diagram for design layout and components
TIDR210.PDF (59 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDC157.ZIP (1962 K)
Design file that contains information on physical board layer of design PCB
Products
Includes TI products in the design and potential alternatives.
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | TIPD114 Verified Design Reference Guide | Jun. 18, 2013 |
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