OPA2234UG4 Texas Instruments Integrated Circuit (Other) In Stock
OPA2234UG4 is a dual precision voltage-feedback operational amplifier by Texas Instruments featuring ultra-low input bias and offset currents. Key specs: 91 dB minimum CMRR, 0.025 µA maximum input bias current, and 0.005 µA input offset current for precision signal conditioning. Available in a compact package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA2234UG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA2234UG4?
- 91 dB minimum CMRR (106 dB typical) enables excellent common-mode noise rejection in precision measurement circuits
- Ultra-low 0.025 µA input bias current minimizes error in high-impedance sensor interface and transimpedance amplifier designs
- 0.005 µA input offset current delivers stable, low-drift performance in dual-channel precision signal conditioning applications
What is OPA2234UG4 used for?
The OPA2234UG4 is used in precision instrumentation amplifiers, strain gauge bridges, and thermocouple signal conditioning circuits where low input bias current and high CMRR are critical to measurement accuracy. Its dual-channel configuration reduces component count in differential signal processing designs for data acquisition systems and medical instrumentation. The voltage-feedback architecture with internal frequency compensation makes it suitable for active filter stages and precision integrators operating at low signal levels.
What are the specifications of OPA2234UG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.025 µA |
| Bias Current-Max (IIB) @25C | 0.025 µA |
| Common-mode Reject Ratio-Min | 91dB |
| Common-mode Reject Ratio-Nom | 106dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.005 µA |
| 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 | 2 |
| 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 | 0.7mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| 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 | Other |
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 OPA2234UG4 datasheet?
OPA2234UG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA2234UG4?
Compatible alternatives and drop-in replacements for OPA2234UG4:
Amplifiers 8-SOIC -40 to 85
Frequently Asked Questions
What CMRR does OPA2234UG4 achieve, and why is it important for differential signal measurements?
The OPA2234UG4 achieves a minimum CMRR of 91 dB and a typical CMRR of 106 dB. High CMRR means the amplifier suppresses common-mode interference such as 50 Hz or 60 Hz power line noise by more than 90 dB, which is essential for accurate differential measurements in strain gauge bridges, thermocouple inputs, and biomedical signal acquisition systems where microvolt-level signals share the measurement path with large common-mode voltages.
How does OPA2234UG4's 0.025 µA input bias current benefit high-impedance sensor interface designs?
With a maximum input bias current of 0.025 µA, the OPA2234UG4 draws negligible current from high-impedance sources such as photodiodes, piezoelectric sensors, and pH electrodes, minimizing input voltage error caused by bias current flowing through source impedances. In a transimpedance amplifier with a 10 MΩ feedback resistor, 0.025 µA of bias current produces only 0.25 mV of offset error, preserving measurement accuracy in precision low-current sensing applications.
For a dual-channel precision active filter, how does OPA2234UG4 reduce external component count compared to using two single op-amps?
The OPA2234UG4 integrates two fully independent operational amplifiers in a single package, replacing two separate single op-amps and saving PCB area and one additional package footprint. Both channels share the same supply pins but operate independently, allowing a dual second-order Sallen-Key or multiple-feedback active filter to be implemented with a single IC at 91 dB CMRR per channel, reducing BOM cost and routing complexity in precision analog filter designs.
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Why Buy from FindMyChip
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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