The electrical performance of data converters depends on the cleanliness of their supply voltages. Linear regulators (LDOs) are commonly used but have low efficiency and high power loss, which is unsuitable for portable applications.
Using a switch mode power supply (SMPS) instead, such as the TPS62231 and TPS62237, is a cost-effective and efficient power supply solution. Such a solution does not degrade the performance of the 12-bit ADS540x family of analog to digital converters (ADCs) and does not waste excessive power. The test report shows the Signal to Noise Ratio (SNR) and Spurious-Free Dynamic Range (SFDR) comparisons between the two power supplies, which demonstrate the same performance.
| Output voltage options | PMP9767.1 | PMP9767.2 |
|---|---|---|
| Vin (Min) (V) | 4 | 4 |
| Vin (Max) (V) | 6 | 6 |
| Vout (Nom) (V) | 3.3 | 1.8 |
| Iout (Max) (A) | .5 | .5 |
| Output Power (W) | 1.65 | .9 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC |
| Topology | Buck- Synchronous | Buck- Synchronous |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Test results for the reference design, including efficiency graphs, test prerequisites and more
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
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | PMP9767 Test Results | Dec. 18, 2015 | |
| More literature | Comparing Power-Supply Architectures for a 12-bit ADC | Jul. 25, 2017 |
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.