OPA234UG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments OPA234UG4 is a precision low-power single-supply operational amplifier with 250 µV maximum input offset voltage and 106 dB typical CMRR in an 8-pin SOIC package. It operates from single supplies as low as 2.7 V and draws minimal quiescent current for always-on sensing applications. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA234UG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA234UG4?
- 250 µV maximum input offset voltage delivers precision DC accuracy in single-supply sensor signal conditioning
- 106 dB typical CMRR (91 dB minimum) suppresses common-mode interference in differential measurement channels
- Single-supply operation from as low as 2.7 V simplifies designs powered directly from a single lithium cell
What is OPA234UG4 used for?
OPA234UG4 is suited for precision sensor interfaces, strain-gauge bridge amplifiers, and 4–20 mA current-loop transmitters that operate from single 3 V to 5 V supplies and require low DC error. Its 250 µV offset spec reduces the need for manual trim potentiometers in production, lowering system calibration cost for medical monitoring equipment and industrial process controllers. Battery-powered data loggers also benefit from its low quiescent current maintaining measurement accuracy across extended discharge cycles.
What are the specifications of OPA234UG4?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.025 µA |
| Bias Current-Max (IIB) @25C | 0.03 µA |
| Common-mode Reject Ratio-Min | 91dB |
| Common-mode Reject Ratio-Nom | 106dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 250 µV |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | YES |
| Micropower | YES |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.2V/us |
| Supply Current-Max | 0.35mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 350 |
| Voltage Gain-Min | 19950 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the OPA234UG4 datasheet?
OPA234UG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA234UG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does OPA234UG4's 250 µV maximum input offset voltage compare to general-purpose op-amps and what measurement accuracy does it enable?
A typical general-purpose op-amp such as LM358 has an input offset up to 7 mV — 28 times larger than OPA234UG4's 250 µV maximum. At unity gain with a 5 V full-scale input, OPA234UG4's offset contributes only 0.005% full-scale error, enabling 12-bit to 13-bit ADC accuracy without offset trim, which eliminates a calibration step in production and reduces BOM cost.
Can OPA234UG4 operate from a 3.3 V single supply, and what input common-mode range is available?
OPA234UG4 supports single-supply operation from 2.7 V to 36 V, so a 3.3 V rail is well within spec. The input common-mode range includes the negative rail (ground), allowing the non-inverting input to be biased at or near 0 V — critical for measuring small signals referenced to ground in single-supply designs without a negative bias network.
For a Wheatstone bridge pressure sensor outputting a 10 mV full-scale differential signal, why is 106 dB CMRR on OPA234UG4 important?
A Wheatstone bridge powered from 5 V sits at a common-mode voltage near 2.5 V. With 106 dB CMRR, OPA234UG4 attenuates that 2.5 V common-mode component to roughly 1.2 µV referred to the input — far below the 10 mV full-scale signal. Without high CMRR, the 2.5 V common-mode component would appear as a large DC error that swamps the actual pressure measurement.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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