Power-optimized 16-bit 1MSPS Data Acquisition Block for Lowest Distortion and Noise Reference Design


Design files


This TI Verified Design is the realization of a high precision, 16-bit 1MSPS data acquisition system suitable for applications such as digital audio that require front-ends with very low distortion and noise. The circuit uses a high performance Successive Approximation Register Analog to Digital Converter (SAR ADC) and has been optimized to provide superior dynamic performance, without excessive power consumption.

  • Verified Design Contains Theory, Component Selection, TINA-TI Simulation, Altium Schematics and PCB Layout, Measurement Results
  • 16 bit SAR ADC with 1MSPS sampling rate and full-scale input range (FSR) of 4.096V
  • Optmized for AC performance:
    • -110dB measured THD
    •  91.6dB measured SNR
    •  Less than ±0.5LSB INL
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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.

TIDR917.PDF (32 K)

Detailed schematic diagram for design layout and components

TIDC205.ZIP (1095 K)

Detailed schematic diagram for design layout and components

TIDR918.PDF (71 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC521.ZIP (527 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

High-speed op amps (GBW ≥ 50 MHz)

OPA836Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp

Data sheet: PDF
High-speed op amps (GBW ≥ 50 MHz)

THS4281Very Low-Power High Speed Rail-To-Rail Input/Output Voltage Feedback Operational Amplifier

Data sheet: PDF | HTML
Precision ADCs

ADS886016-bit, 1-MSPS, 1-channel SAR ADC with single-ended input, SPI and daisy chain

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA333Micropower, 1.8-V, 17-µA zero-drift CMOS precision operational amplifier

Data sheet: PDF | HTML
Series voltage references

REF32404.096-V 4-ppm/°C, 100-µA 6-pin SOT-23 series (bandgap) voltage reference

Data sheet: PDF

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Technical documentation

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Type Title Date
* User guide Power-Optimized 16-Bit 1-MSPS Data Acquisition Block Design Guide Dec. 10, 2013
Technical article When to use an amplifier with rail-to-rail inputs – and what to watch out for PDF | HTML Jun. 30, 2016

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