ADC Voltage Reference Buffer Optimization Reference Design for High Performance DAQ Systems

(ACTIVE) TIDA-01055

Description & Features

Technical Documents

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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, 2MSPS, 15mW SAR ADC With multiSPI™ Digital 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  Buck/Boost, Inverting or Split-Rail  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 and Timing  Sample & Buy View Design Kits & Evaluation Modules
LMZ14201  SIMPLE SWITCHER® 6V to 42V, 1A Power Module in Leaded Surface Mount TO Package  Non-Isolated Module  Sample & Buy View Design Kits & Evaluation Modules
LMZ14202  SIMPLE SWITCHER® 6V to 42V, 2A Power Module in Leaded SMT-TO Package  Non-Isolated Module  Sample & Buy View Design Kits & Evaluation Modules
LMZ14203  SIMPLE SWITCHER® 6V to 42V, 3A Power Module in Leaded Surface Mount TO Package  Non-Isolated Module  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 Reference  Sample & Buy Not Available
REF6041  High-Precision Voltage Reference With Integrated High-Bandwidth Buffer  Voltage Reference  Sample & Buy View Design Kits & Evaluation Modules
SN74AHC1G04  Single Inverter Gate  Logic  Sample & Buy View Design Kits & Evaluation Modules
SN74AUP1G80  Low-Power Single Postitive-Edge-Triggered D-Type Flip-Flop  Logic  Sample & Buy View Design Kits & Evaluation Modules
THS4551  Low Noise, Precision, 150MHz, Fully Differential Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS709  150-mA, 30-V, Ultra-Low IQ, Wide Input Low-Dropout Regulator with Reverse Current Protection  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
TPS7A3001-EP  Enhanced Product Vin -3V to -36V, -200mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator  Power Management Products  Sample & Buy Not Available
TPS7A47  36V, 1A, 4.17μVRMS, RF Low-Dropout (LDO) Voltage Regulator  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 3119 19 Sep 2017 556
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 1227 15 Sep 2017 69
ZIP 17037 15 Sep 2017 115
PDF 3715 15 Sep 2017 72
PDF 872 15 Sep 2017 65
PDF 231 15 Sep 2017 88
PDF 914 15 Sep 2017 490
Related Tools & Software

Reference Designs (2)



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