ADC Voltage Reference Buffer Optimization Reference Design for High Performance DAQ Systems TIDA-01055 (ACTIVE)

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Key Document

Description

The TIDA-01055 reference design for high performance DAQ Systems optimizes the ADC reference buffer to improve SNR performance and reduce power consumption with the TI OPA837 high-speed op amp. This device is used in a composite buffer configuration and provides a 22% power improvement over traditional op amps. Voltage reference sources with an integrated buffer often lack the drive strength required to achieve optimal performance in a high-channel count systems.  This reference design is capable of driving several ADCs, and achieves a system ENOB of 15.77 bits using an 18-bit, 2-MSPS SAR ADC.

Features
  • Two stage buffer design for reducing noise generated from voltage reference
  • Implements new low power reference driver with the slew rate capability to drive a 2MSPS SAR ADC

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TI Devices (23)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS9110  18-Bit, 2-MSPS, 1-Ch SAR ADC with Enhanced SPI Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
LM46001  3.5 to 60V, 1A Synchronous Step-Down Voltage Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LM53635-Q1  2.5/3.5A, 36 V Synchronous, 2.1MHz, Automotive Step Down DC-DC Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LM5574  75V, 0.5A Step-Down Switching Regulator  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LM7705  Low Noise Negative Bias Generator  DC/DC switching regulators  Sample & Buy View Design Kits & Evaluation Modules
LMK00804B  Low Skew, 1-to-4 Multiplexed Differential/LVCMOS-to-LVCMOS/TTL Fanout Buffer  Clock buffers  Sample & Buy View Design Kits & Evaluation Modules
LMK61E2  Ultra-Low Jitter Fully Programmable Oscillator, Integrated EEPROM, +/-50ppm  Clock & timing  Sample & Buy View Design Kits & Evaluation Modules
LMZ14201  SIMPLE SWITCHER® 6V to 42V, 1A Power Module in Leaded Surface Mount TO Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMZ14202  SIMPLE SWITCHER® 6V to 42V, 2A Power Module in Leaded SMT-TO Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMZ14203  SIMPLE SWITCHER® 6V to 42V, 3A Power Module in Leaded Surface Mount TO Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
OPA376  Precision, Low Noise, Low Iq Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA378  Low-Noise, 900kHz, RRIO, Precision Operational Amplifier, Zerø-Drift Series  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA625  High Bandwidth, High Precision, Low Noise & Distortion Amplifier SAR ADC Driver with Power Scaling  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA827  Low-Noise, High-Precision, JFET-Input Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA837  Low Power, Precision, 105 MHz, Voltage Feedback Op Amp  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF5040  Low Noise, Very Low Drift, Precision Series Voltage Reference  Voltage references  Sample & Buy Not Available
REF6041  5ppm/C High-Precision Voltage Reference with Integrated High-Bandwidth Buffer  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
SN74AHC1G04  Single Inverter Gate  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
SN74AUP1G80  Low-Power Single Postitive-Edge-Triggered D-Type Flip-Flop  Flip-flop/latch/register  Sample & Buy View Design Kits & Evaluation Modules
THS4551  Low Noise, Precision, 150MHz, Fully Differential Amplifier  Special function amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TPS709  150-mA 30-V ultra-low-IQ wide-input low-dropout (LDO) regulator with reverse current protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS7A3001-EP  Enhanced Product Negative Vin, -200mA, Ultra-Low-Noise, High-PSRR, Low-Dropout Linear Regulator  Power management  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)
ADS9110 Download Download
LM46001 Download Download
LM53635-Q1 Download Download
LM5574 Download Download
LM7705 Download Download
LMK00804B Download
LMK61E2 Download Download
LMZ14201 Download Download
LMZ14202 Download Download
LMZ14203 Download Download
OPA376 Download Download
Download Download
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OPA378 Download Download
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OPA625 Download Download
OPA827 Download Download
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OPA837 Download
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REF5040 Download Download
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REF6041 Download Download
SN74AHC1G04 Download Download
Download Download
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SN74AUP1G80 Download Download
Download Download
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Download -
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THS4551 Download
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TPS709 Download
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TPS7A3001-EP Download Download
TPS7A47 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 3126 29 Jan 2018
Design files (6)
Title Type Size (KB) Date
ZIP 1227 15 Sep 2017
ZIP 17037 15 Sep 2017
PDF 3715 15 Sep 2017
PDF 872 15 Sep 2017
PDF 231 15 Sep 2017
PDF 914 15 Sep 2017
Related Tools & Software

Reference Designs  ( 10 )


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