*OPA2277UA Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The OPA2277UA is a dual precision operational amplifier from Texas Instruments featuring 1 MHz gain-bandwidth product and ultra-low offset voltage, housed in an 8-pin SOIC package. It delivers high accuracy for instrumentation and signal conditioning applications requiring stable, low-drift amplification.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- *OPA2277UA Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of *OPA2277UA?
- Dual channel op-amp with 1 MHz gain-bandwidth product for precision signal amplification
- Ultra-low input offset voltage for accurate DC and low-frequency measurements
- Wide supply voltage range enabling use across 3 V to 36 V single-supply systems
- 8-pin SOIC package for compact surface-mount circuit layouts
- Low input bias current minimizing errors in high-impedance sensor interfaces
What is *OPA2277UA used for?
The OPA2277UA is well suited for precision instrumentation front-ends such as bridge amplifiers, RTD conditioning circuits, and 4–20 mA current loop transmitters where offset and drift must remain below 10 µV over temperature. Its dual channel design allows differential amplification and simultaneous signal processing in a single 8-pin SOIC footprint, reducing board area in data acquisition modules. The device is also used in medical diagnostic equipment and industrial weighing systems where long-term accuracy over the -40°C to 85°C range is critical.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the *OPA2277UA datasheet?
*OPA2277UA Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for *OPA2277UA?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the OPA2277UA achieve precision measurement accuracy in a bridge sensor interface?
The OPA2277UA achieves precision by combining an ultra-low input offset voltage below 10 µV, low temperature drift of under 0.1 µV/°C, and low input bias current, which together prevent gain errors in high-impedance bridge circuits. In a Wheatstone bridge configuration at 5 V excitation, the amplifier can resolve millivolt-level imbalances corresponding to sub-millinewton force changes.
What is the gain-bandwidth product of the OPA2277UA, and how does this constrain closed-loop bandwidth?
The OPA2277UA has a gain-bandwidth product of 1 MHz. At a closed-loop gain of 10 V/V, the usable small-signal bandwidth is approximately 100 kHz, and at a gain of 100 V/V the bandwidth drops to about 10 kHz. Designers must account for this trade-off when amplifying signals above audio frequencies.
For a compact 4–20 mA transmitter PCB, what advantage does the 8-pin SOIC package of the OPA2277UA offer over a DIP alternative?
The 8-pin SOIC package occupies roughly 20 mm² of board area compared to over 60 mm² for a DIP-8, cutting the amplifier footprint by approximately 65 %. This space saving is significant in field transmitters where the PCB must fit inside a 40 mm diameter housing alongside the ADC, power regulator, and communication circuitry.
When is the OPA2277UA a preferred alternative to general-purpose op-amps in industrial signal conditioning?
The OPA2277UA is preferred over general-purpose op-amps when the design requires offset below 10 µV and drift below 0.5 µV/°C over -40°C to 85°C, which general-purpose devices with typical offsets of 1 mV to 5 mV cannot meet. Industrial 4–20 mA loops, load cell amplifiers, and thermocouple conditioners all benefit from this level of DC precision without adding external auto-zero circuitry.
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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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