Low Power, Low Noise 24b Analog Front-End Reference Design for DAQ and Wireless Sensor IoT Systems


Design files


The need for lower power, lower noise analog front-ends (AFE) is becoming increasingly important in many applications today, such as data acquisition systems (DAQs), field instrumentation, Internet-of-Things (IoT), and automatic test equipment. In many cases, this need is highlighted by the advent of high resolution, high SNR, and  low-power ADCs, similar to TI's 24-bit ADS127L01 Delta-Sigma ADC, supported by complimentary low-power, low-noise AFEs. These new solutions will allow system designers to integrate a higher number of channels in data acquisition, wireless metering, and field instrumentation systems. Improved ADC and AFE design solutions will also provide better support and improve numerous power sensitive IoT applications. The TIDA-01013 reference design demonstrates a complete low power, low noise AFE and ADC solution designed to enhance  power sensitive applications.

  • Low power, low noise AFE design for 24-bit delta-sigma ADC DAC systems
  • SNR: 104dB
  • ENOB: 19.1 bits
  • Power consumption: 41mW
  • Up to +/-10V input signal
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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.


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRRZ9.ZIP (1320 K)

Files used for 3D models or 2D drawings of IC components

TIDRS00.ZIP (41 K)

Files used for 3D models or 2D drawings of IC components

TIDCDO5.ZIP (1632 K)

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

TIDRRZ8.PDF (1879 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

LMR23610SIMPLE SWITCHER, 36V 1A Synchronous Step-Down Converter

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS56020017V Input, 500mA Synchronous Step-Down Regulator in SOT-23 with Advanced Eco-Mode™

Data sheet: PDF | HTML
Clock buffers

LMK00804BLow skew, 1-to-4 multiplexed differential/LVCMOS-to-LVCMOS/TTL fanout buffer

Data sheet: PDF | HTML
Fully differential amplifiers

THS4551Low Noise, Precision, 150MHz, Fully Differential Amplifier

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS731150-mA, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS791100-mA, low-noise, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A30200-mA, low-noise, high-PSRR, negative, adjustable low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Precision ADCs

ADS127L0124-Bit, 512kSPS, 1-Ch, Very-Low-Power, Wide-Bandwidth Delta-Sigma ADC

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

OPA191Low-Power, Precision, 36-V, e-trim CMOS Amplifier

Data sheet: PDF | HTML
Series voltage references

REF60303-V, 5-ppm/°C high-precision voltage reference with integrated buffer & enable pin

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Low-Power, Low-Noise, 24-Bit AFE Reference Design for Wireless Sensor (Rev. A) Jul. 24, 2019

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