OPA124UA Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
OPA124UA is a precision FET-input operational amplifier featuring ultra-low bias current of 2 pA, 94 dB CMRR, and voltage-feedback architecture in SOIC-8 package. From $8.34, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA124UA Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $8.3435(MOQ 1)
- Temp Range
- -25.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA124UA?
- Ultra-low input bias current of 2 pA max, ideal for high-impedance sensor interfaces
- High common-mode rejection ratio of 100 dB typical, ensuring accurate signal amplification
- Voltage-feedback architecture with frequency compensation for stable operation across wide bandwidth
- Available in compact SOIC-8 package for space-constrained precision analog designs
- FET input stage enabling extremely low input offset current of 1 pA max
What is OPA124UA used for?
The OPA124UA is well-suited for precision instrumentation amplifiers, medical sensing equipment, and electrochemical analysis systems where ultra-low leakage currents are critical. Its high CMRR and FET input make it ideal for photodiode transimpedance amplifiers, pH meters, and piezoelectric sensor signal conditioning. It also excels in data acquisition front-ends and industrial process control circuits requiring low noise and high accuracy.
What are the specifications of OPA124UA?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.000002 µA |
| Bias Current-Max (IIB) @25C | 0.000002 µA |
| Common-mode Reject Ratio-Min | 94dB |
| Common-mode Reject Ratio-Nom | 100dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.000001 µA |
| Input Offset Voltage-Max | 500 µV |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | YES |
| Micropower | NO |
| 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-Min | 1V/us |
| Slew Rate-Nom | 1.6V/us |
| Supply Current-Max | 3.5mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| 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 | 1500 |
| Voltage Gain-Min | 200000 |
| 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 OPA124UA datasheet?
OPA124UA Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA124UA?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input bias current of the OPA124UA?
The OPA124UA features an exceptionally low maximum input bias current (IIB) of 0.000002 µA (2 pA) at 25°C. This ultra-low leakage makes it ideal for high-impedance applications such as photodiode amplifiers, pH electrodes, and charge amplifiers where even picoamp-level bias currents can cause measurement errors.
What are the typical applications for the OPA124UA?
The OPA124UA is designed for precision analog applications requiring ultra-low input leakage, including medical instrumentation, electrochemical sensors, photodiode transimpedance amplifiers, pH meters, piezoelectric transducer interfaces, and high-accuracy data acquisition systems. Its 100 dB typical CMRR and FET input architecture make it particularly effective in industrial process control and scientific measurement equipment.
What package does the OPA124UA come in and what are the alternatives?
The OPA124UA is housed in the standard SOIC-8 (Small Outline IC, 8-pin) package, which offers good PCB density with easy hand-soldering capability. Compatible alternatives from Texas Instruments in similar FET-input precision op-amp category include the OPA128 and OPA111. The SOIC-8 footprint is widely supported by PCB design tools and available from multiple assembly vendors.
What is the common-mode rejection ratio (CMRR) of the OPA124UA?
The OPA124UA provides a minimum CMRR of 94 dB and a typical CMRR of 100 dB. This high rejection ratio ensures that signals common to both inputs are effectively suppressed, making the device excellent for differential signal measurement in noisy industrial environments, medical equipment, and precision bridge sensor amplification circuits.
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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 |
|---|---|---|
| 1+ | $13.5300 | $13.53 |
| 9+ | $9.0200 | $81.18 |
| 29+ | $8.3435 | $241.96 |
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