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Single Supply Op Amp with Drive to True GND
TIPD145
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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

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA313  1-Channel, 1-MHz, low-noise, low power, RRIO 1.8-V op amp  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

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA313 Download
Download Download
OPA365 Download Download
Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 509 10 Dec 2013
Design files (3)
Title Type Size (KB) Date
PDF 185 15 Jan 2014
PDF 40 09 Jan 2014
ZIP 15 10 Dec 2013
More literature (1)
Title Type Size (KB) Date
PDF 743 13 Jan 2015
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Software development (1)



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