Op Amp with Single Discrete Bipolar Transistor Output Drive

(ACTIVE) TIPD146

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Key Document

Description

Driving a low resistance load with a precision amplifier is an important requirement for many systems.  This function can be achieved with power op amps, but cost may be prohibitive.  This TI Precision design shows how to achieve high output drive capability using a precision amplifier and a simple low cost discrete bipolar transistor.

Features
  • Output Drive Increase to 200mA
  • Precision Voltage Drive on Low Impedance Loads
  • Low Cost Implementation

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Schematic/Block Diagram

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Test Data

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Bill of Materials (BOM)

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TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA140  11MHz, Single Supply, Low Noise, Precision, Rail-to-Rail Output, JFET Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA188  Precision, Low-Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA211  1.1nV/rtHz Noise, Low-Power, Precision Operational Amplifier  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

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA140 Download Download
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OPA188 Download Download
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OPA211 Download Download
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OPA827 Download Download
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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
PDF 619 10 Dec 2013
Design files (2)
Title Abstract Type Size (KB) Date
PDF 191 15 Jan 2014
PDF 88 09 Jan 2014
Related Tools & Software

Software (2)



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