TIPD169

16-Bit, 1MSPS Multiplexed Data Acquisition Reference Design

TIPD169

Design files

Overview

This design is for a 16-bit 1MSPS single-ended, multiplexed data acquisition system (DAQ) for dc inputs. The system is composed of a 16-bit successive-approximation-register (SAR) analog-to-digital converter (ADC), SAR ADC driver, reference driver, and multiplexer. The design shows the process to optimize a single-ended DAQ to achieve fast settling at a sampling rate of 1MSPS.

Features
  • 1/2 LSB settling in 390 ns
  • Throughput of 1MSPS
  • 4 V output step
  • Measured Effective Resolution of 15.72 bits
  • Measured ENOB of 13.57 bits

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.

TIDUAD9.PDF (1255 K)

Reference design overview and verified performance test data

TIDCAV2.ZIP (636 K)

Detailed schematic diagram for design layout and components

TIDRGT4.PDF (468 K)

Detailed schematic diagram for design layout and components

TIDRGT5.PDF (125 K)

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

Products

Includes TI products in the design and potential alternatives.

Precision op amps (Vos<1mV)

OPA320Precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
Precision op amps (Vos<1mV)

OPA3331.8-V, 17-µA, microPower, precision, zero-drift CMOS op amp

Data sheet document-pdfAcrobat PDF open-in-new HTML
Analog switches & muxes

TS5A31591-Ω on-state resistance, 5-V, 2:1 (SPDT), 1-channel analog switch

Data sheet document-pdfAcrobat PDF open-in-new HTML
Counters

SN74LV393ADual 4-Bit Binary Counters

Data sheet document-pdfAcrobat PDF
High-speed op amps (GBW>=50MHz)

OPA625High Bandwidth, High Precision, Low Noise & Distortion Amplifier SAR ADC Driver with Power Scaling

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed op amps (GBW>=50MHz)

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

Data sheet document-pdfAcrobat PDF open-in-new HTML
Inverting buffers & drivers

SN74LVC1G14Single 1.65-V to 5.5-V inverter with Schmitt-Trigger inputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
Precision ADCs (<=10MSPS)

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

Data sheet document-pdfAcrobat PDF open-in-new HTML
Series voltage references

REF50454.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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* Design guide Fast-Settling 16-Bit 1-MSPS Multiplexed Data Acquisition Design Guide Aug. 04, 2015

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