OPA277U/2K5 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
High precision operational amplifier with 140 dB CMRR, 0.001 µA bias current, and voltage-feedback architecture. Ideal for instrumentation, medical, and precision measurement applications. From $3.30 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- OPA277U/2K5 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.3045(MOQ 5)
- Temp Range
- -40.0°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 0.001 µA at 25°C for minimal loading on high-impedance sources
- Exceptional 140 dB common-mode rejection ratio (CMRR) for superior noise immunity
- Voltage-feedback architecture with internal frequency compensation for stable single-supply operation
- Available in Small Outline Package (SOIC) with 2,500-unit tape-and-reel option for production efficiency
Applications
The OPA277U/2K5 is well-suited for precision instrumentation amplifiers, medical diagnostic equipment, and data acquisition systems where ultra-low offset and noise are critical. Its high CMRR makes it ideal for bridge sensor signal conditioning and thermocouple amplification. The device also excels in industrial process control and precision current sensing applications requiring long-term stability.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.002 µA |
| Bias Current-Max (IIB) @25C | 0.001 µA |
| Common-mode Reject Ratio-Min | 130dB |
| Common-mode Reject Ratio-Nom | 140dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.001 µA |
| Input Offset Voltage-Max | 20 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 | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 0.8V/us |
| Slew Rate-Nom | 0.8V/us |
| Subcategory | Operational Amplifier |
| Supply Current-Max | 0.825mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 1000 |
| Voltage Gain-Min | 1995000 |
| 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 |
| Country of Origin | Mainland China, Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for OPA277U/2K5:
Frequently Asked Questions
What is the input bias current of the OPA277U/2K5?
The OPA277U/2K5 features an extremely low maximum input bias current (IIB) of 0.001 µA (1 nA) at 25°C, with a maximum of 0.002 µA over temperature. This makes it ideal for high-impedance sensor interfaces where even small bias currents could cause significant voltage errors.
What applications is the OPA277U/2K5 designed for?
The OPA277U/2K5 is designed for high-precision applications including medical instrumentation, data acquisition front ends, bridge amplifiers, thermocouple signal conditioning, and industrial process control. Its 140 dB CMRR and ultra-low offset current make it especially suitable for differential measurement systems requiring long-term accuracy.
What does the '2K5' suffix mean in OPA277U/2K5?
The '2K5' suffix indicates that the OPA277U comes in a tape-and-reel package containing 2,500 units per reel, optimized for automated PCB assembly in production environments. This packaging option reduces per-unit handling cost and is the preferred format for volume manufacturing.
What is the common-mode rejection ratio (CMRR) of the OPA277U/2K5?
The OPA277U/2K5 delivers a minimum CMRR of 130 dB and a typical CMRR of 140 dB. This outstanding rejection performance ensures that common-mode noise and interference on both input lines — such as 50/60 Hz power line noise — are effectively suppressed, preserving signal integrity in noisy environments.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $5.2800 | $26.40 |
| 10+ | $4.8300 | $48.30 |
| 25+ | $4.6600 | $116.50 |
| 56+ | $3.5731 | $200.09 |
| 73+ | $3.4388 | $251.03 |
| 91+ | $3.3045 | $300.71 |
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