OPA196 Datasheet, PDF (18/47 Pages) Texas Instruments – 36-V, Low-Power, Low Offset Voltage, Rail-to-Rail Operational Amplifier

OPA196, OPA2196, OPA4196
SBOS869 – JULY 2017
7 Detailed Description
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7.1 Overview
The OPAx196 family of operational amplifiers use e-trim, a method of package-level trim for offset and offset
temperature drift implemented during the final steps of manufacturing after the plastic molding process. This
method minimizes the influence of inherent input transistor mismatch, as well as errors induced during package
molding. The trim communication occurs on the output pin of the standard pinout, and after the trim points are
set, further communication to the trim structure is permanently disabled. The Functional Block Diagram shows
the simplified diagram of the OPA196 with e-trim.
Unlike previous e-trim op amps, the OPAx196 uses a patented two-temperature trim architecture to achieve a
very low offset voltage and low voltage offset drift over the full specified temperature range. This level of
precision performance at wide supply voltages makes these amplifiers useful for high-impedance industrial
sensors, filters, and high-voltage data acquisition.
7.2 Functional Block Diagram
OPAx196
NCH Input
Stage
IN+
36-V
Differential
Front End
IN-
Slew
Boost
High
Capacitive Load
Compensation
Output
Stage
VOUT
PCH Input
Stage
e-trim
Package Level Trim
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Copyright © 2017, Texas Instruments Incorporated
Product Folder Links: OPA196 OPA2196 OPA4196