OPA2234UE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
OPA2234UE4 is a dual low-power precision single-supply operational amplifier by Texas Instruments with 106 dB typical CMRR and 25 nA maximum bias current in an 8-pin SOIC package. Key specs: -40°C to 85°C operating range, voltage-feedback architecture, and 91 dB minimum CMRR. Available from stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA2234UE4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $58.2090(MOQ 3)
- 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 OPA2234UE4?
- Dual precision op-amp with 106 dB typical CMRR and 25 nA maximum input bias current for high-accuracy single-supply signal conditioning
- Single-supply operation with rail-to-rail input common-mode range enables direct interfacing with low-voltage sensors from 2.7 V to 36 V supply
- Low-power voltage-feedback architecture with internal frequency compensation suits battery-powered precision measurement instruments operating across -40°C to 85°C
What is OPA2234UE4 used for?
The OPA2234UE4 is used in precision analog signal conditioning circuits such as bridge amplifiers, thermocouple signal chains, and strain-gauge interfaces in industrial and medical instruments where the 106 dB CMRR suppresses common-mode noise on differential sensor inputs. Its low 25 nA bias current makes it well-suited for high-impedance sensor interfaces, pH electrode amplifiers, and photodiode transimpedance amplifiers that cannot tolerate significant input leakage current. The dual-channel 8-SOIC package enables compact two-channel differential amplifier designs on a single device.
What are the specifications of OPA2234UE4?
| Pbfree Code | No |
| Reach Compliance Code | Compliant |
| 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 Voltage-Max | 250 µV |
| JESD-30 Code | R-PDSO-G8 |
| 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 |
| Power | YES |
| 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 Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| 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) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the OPA2234UE4 datasheet?
OPA2234UE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA2234UE4?
Compatible alternatives and drop-in replacements for OPA2234UE4:
Frequently Asked Questions
What is the CMRR of the OPA2234UE4 and why does it matter for differential sensor signal chains?
The OPA2234UE4 achieves a typical CMRR of 106 dB and a minimum of 91 dB, which means common-mode noise on a 1 V amplitude level is attenuated by over 100,000:1 at the output. This high rejection is critical in strain-gauge bridge and thermocouple amplifier circuits where 50 Hz or 60 Hz interference can easily exceed the microvolt-level differential signal from the sensor.
How does the 25 nA maximum input bias current of the OPA2234UE4 affect high-impedance sensor designs?
At a maximum of 25 nA input bias current, the OPA2234UE4 introduces less than 25 µV of offset error when driven from a 1 MΩ source impedance, keeping measurement errors negligible in pH electrode, ion-selective electrode, and photodiode transimpedance amplifier applications. Compared to general-purpose op-amps with microampere-level bias currents, this 25 nA specification enables accurate readings from sensors with source impedances up to 10 MΩ.
Can the OPA2234UE4 operate reliably in automotive or outdoor equipment exposed to -40°C environments?
Yes, the OPA2234UE4 is specified over the industrial temperature range of -40°C to 85°C, making it suitable for automotive cabin electronics, outdoor monitoring equipment, and HVAC control systems that must perform reliably in cold climates. Its precision specifications — including the 106 dB CMRR and 25 nA bias current — are maintained across this full -40°C to 85°C range rather than being guaranteed only at 25°C.
When would an OPA2234UE4 dual op-amp be chosen over two discrete OPA234 single op-amps in a design?
The OPA2234UE4 dual op-amp provides 2 matched precision amplifier channels in a single 8-pin SOIC package, saving approximately 50% of PCB area and reducing component count by 1 IC plus associated decoupling capacitors compared to two OPA234 singles. For two-channel precision signal chains such as stereo audio front ends or dual-axis accelerometer interfaces, the dual package also ensures better channel-to-channel matching of offset voltage and CMRR characteristics from the same silicon die.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 3+ | $67.1642 | $201.49 |
| 4+ | $64.9254 | $259.70 |
| 6+ | $58.2090 | $349.25 |
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