TIPD149
Power-optimized 16-bit 1MSPS Data Acquisition Block for Lowest Distortion and Noise Reference Design
TIPD149
Overview
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.
Features
- 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
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
Products
Includes TI products in the design and potential alternatives.
High-speed op amps (GBW>=50MHz)
OPA836 — Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp
Data sheetHigh-speed op amps (GBW>=50MHz)
THS4281 — Very Low-Power High Speed Rail-To-Rail Input/Output Voltage Feedback Operational Amplifier
Data sheetPrecision ADCs (<=10MSPS)
ADS8860 — 16-bit, 1-MSPS, 1-channel SAR ADC with single-ended input, SPI and daisy chain
Data sheetPrecision op amps (Vos<1mV)
OPA333 — 1.8-V, 17-µA, microPower, precision, zero-drift CMOS op amp
Data sheetSeries voltage references
REF3240 — 4.096-V 4-ppm/°C, 100-µA 6-pin SOT-23 series (bandgap) voltage reference
Data sheetStart development
Technical documentation
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View all 3
| 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 | Jun. 30, 2016 | |
| Technical article | Using SAR ADC TINA Models: Much ado about settling | Dec. 12, 2014 |
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