Single Supply Op Amp with Drive to True GND

(ACTIVE) TIPD145

Description & Features

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Key Document

Description

Single supply rail-to-rail amplifiers are commonly used in analog systems.  In some cases it is important to have an amplifier output that drives very close to GND (i.e. a few microvolts).  However, no amplifier can inherently drive this close to GND.  This TI Precision Design shows a simple design modification that allows most standard single supply rail-to-rail amplifiers to drive very close to GND.

Features
  • Drives output to true GND
  • Avoids output swing limitations near GND using pull-down
  • Single-Supply Solution

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


  




TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA313  1-MHz, Micropower, Low-Noise, Rail-to-Rail I/O 1.8-V Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA333  1.8V, 17µA, microPower, Precision, Zero-Drift CMOS Op Amp   Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA350  High-Speed, Single-Supply, Rail-to-Rail Operational Amplifiers MicroAmplifier™ Series  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA365  2.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail Operational Amplifier  Operational Amplifiers (Op Amps)  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 509 10 Dec 2013 36
Design files (2)
Title Abstract Type Size (KB) Date Views
PDF 185 15 Jan 2014 16
PDF 40 09 Jan 2014 18
More literature (1)
Title Abstract Type Size (KB) Date Views
PDF 743 13 Jan 2015 116
Related Tools & Software

Software (2)



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