OPA124U Texas Instruments Integrated Circuit (Other) In Stock
OPA124U is a precision FET-input operational amplifier in SOIC-8 package, featuring ultra-low bias current of 5fA max, 100dB CMRR, and voltage-feedback architecture. From $7.01, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA124U Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.0115(MOQ 1)
- Temp Range
- -25.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low input bias current of 5fA max for minimal signal loading in high-impedance applications
- High common-mode rejection ratio of 100dB (min 92dB) for excellent noise rejection
- Voltage-feedback architecture with frequency compensation for stable operation
- Input offset current of 5fA max ensuring precision DC accuracy
- Wide supply range suitable for demanding instrumentation and measurement systems
Applications
The OPA124U is ideal for high-impedance sensor interfaces such as pH electrodes, photodiodes, and piezoelectric transducers where ultra-low bias current is critical. It is well-suited for precision instrumentation amplifiers, medical measurement equipment, and scientific data acquisition systems requiring high input impedance and accurate signal conditioning. Its excellent CMRR also makes it effective in differential signal processing and industrial control applications.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.000005 µA |
| Bias Current-Max (IIB) @25C | 0.000005 µA |
| Common-mode Reject Ratio-Min | 92dB |
| Common-mode Reject Ratio-Nom | 100dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.000005 µA |
| Input Offset Voltage-Max | 800 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 | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for OPA124U:
Frequently Asked Questions
What is the input bias current of the OPA124U?
The OPA124U features an extremely low maximum input bias current (IIB) of 0.000005 µA (5 femtoamperes) at 25°C, making it ideal for high-impedance signal sources such as pH electrodes and photodiodes where minimal loading is essential.
What package does the OPA124U come in and what are its dimensions?
The OPA124U is available in an SOIC-8 surface-mount package, which offers a compact footprint suitable for space-constrained PCB designs. This standard 8-pin SOIC package is widely compatible with automated assembly processes.
What are typical applications for the OPA124U operational amplifier?
The OPA124U is commonly used in precision instrumentation, medical measurement devices, scientific data acquisition, pH meter front-ends, piezoelectric sensor amplifiers, and any application requiring ultra-low input bias current combined with high common-mode rejection ratio of 100dB.
What is the common-mode rejection ratio (CMRR) of the OPA124U?
The OPA124U offers a typical CMRR of 100dB and a minimum CMRR of 92dB. This high rejection ratio effectively suppresses common-mode noise and interference, which is critical in differential measurement and industrial sensor applications.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $11.3700 | $11.37 |
| 2+ | $9.4750 | $18.95 |
| 10+ | $7.5800 | $75.80 |
| 34+ | $7.0115 | $238.39 |
In Stock · 24h Response · Worldwide Shipping
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