The target application for this design includes digital multimeters (DMMs) that require ultra-high precision to measure dc signals. This design achieves effective dc accuracy using the ADS127L21B, a high-performance, 24-bit analog-to-digital converter (ADC) with effective linearity. An ultra-low drift buried Zener reference, REF81, calibrates the signal chain to eliminate gain and offset errors.
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.
Reference design overview and verified performance test data
Detailed overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Low-Noise, Highly Linear, Analog Front-End Reference Design | PDF | HTML | Nov 3, 2025 |
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.