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20-bit, 1-MSPS, 4-Ch Small Form Factor Design for Test and Measurement Applications Reference Design
TIPD211
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Key Document

Description

End equipment such as mixed signal SOC testers, memory testers, battery testers, liquid-crystal display (LCD) testers, benchtop equipment, high-density digital cards, high-density power cards, x-Ray, MRI, and so forth require multiple, fast, simultaneous sampling channels with excellent DC and AC performance but at low power and in small board spaces. The proposed solution in this design uses high-performance SAR ADCs (ADS8910B), precision amplifiers (OPA2625), and a precision voltage reference (REF5050).

Features
  • 18 bit 1 MSPS 4 Channel Simultaneous Sampling Data Acquisition system
  • 18 bit NMC DNL; +/- 0.5 LSB INL linearity performance for each channel
  • 101dB SNR, 124dB THD with 2kHz Sine wave input on each channel
  • >110dB Channel to Channel Isolation
  • This circuit design is tested and includes Getting Started guide.

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Design Files

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TI Devices (13)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS8900B  20-Bit, 1-MSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8902B  20-Bit, 500-kSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8904B  20-Bit, 250-kSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8910B  18-Bit, 1-MSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8912B  18-Bit, 500-kSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8914B  18-Bit, 250-kSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8920B  16-Bit, 1-MSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8922B  16-Bit, 500-kSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8924B  16-Bit, 250-kSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
OPA2625  High-Bandwidth, High-Precision, Low THD+N, 16-Bit and 18-Bit ADC Drivers with shutdown  Operational amplifiers (op amps)  Sample & Buy Not Available
OPA376  Precision, Low Noise, Low Iq Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF5050  3 µVpp/V Noise, 3 ppm/°C Drift Precision Series Voltage Reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TPS7A47  36-V, 1-A, 4.17-μVRMS, RF low-dropout (LDO) voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS8900B Download
ADS8902B Download
ADS8904B Download
ADS8910B Download
ADS8912B Download
ADS8914B Download
ADS8920B Download
ADS8922B Download
ADS8924B Download
OPA2625 Download
OPA376 Download Download
Download Download
Download Download
REF5050 Download Download
Download Download
TPS7A47 Download Download

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 2610 28 Nov 2016
Design files (6)
Title Type Size (KB) Date
PDF 1859 18 Nov 2016
PDF 68 18 Nov 2016
ZIP 471 12 Jul 2016
ZIP 1212 12 Jul 2016
PDF 1330 12 Jul 2016
PDF 239 12 Jul 2016
Related Tools & Software

Reference Designs  ( 1 )

Name Part Number Tool Type
Data Acquisition Optimized for Lowest Distortion, Lowest Noise, 18 bit, 1Msps Reference Design  TIPD115  TI Designs

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