OPA2227PAG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments OPA2227PAG4 is a dual precision low-noise operational amplifier in an 8-pin DIP tube package, offering 120 dB minimum CMRR, 200 µV max offset voltage, and ±18 V supply range for demanding instrumentation and audio applications.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA2227PAG4 Datasheet PDF
- Category
- Integrated Circuit
- 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 OPA2227PAG4?
- 120 dB minimum CMRR (138 dB typical) with 200 µV maximum offset voltage enables ultra-precise differential signal acquisition in instrumentation amplifier front ends
- Dual-channel configuration in a single 8-pin PDIP package reduces board footprint by 50% compared to two single op-amps while sharing a ±2.25 V to ±18 V dual supply
- 0.01 µA maximum input bias current with internal frequency compensation minimizes offset errors caused by high source impedances in sensor and photodiode transimpedance circuits
What is OPA2227PAG4 used for?
The OPA2227PAG4 targets precision instrumentation amplifiers, medical ECG front ends, and high-accuracy data acquisition systems where 120 dB CMRR and sub-200 µV offset are essential for resolving microvolt-level differential signals. Its ±18 V supply range accommodates industrial measurement systems running from standard ±15 V laboratory supplies without additional regulation. The dual-channel topology simplifies fully differential signal chains in audio analysis and seismic measurement equipment.
What are the specifications of OPA2227PAG4?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.01 µA |
| Bias Current-Max (IIB) @25C | 0.01 µA |
| Common-mode Reject Ratio-Min | 120dB |
| Common-mode Reject Ratio-Nom | 138dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 200 µV |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | YES |
| Micropower | NO |
| 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 | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 2.3V/us |
| Supply Current-Max | 8.4mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 8000 |
| Voltage Gain-Min | 3980000 |
| Wideband | NO |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the OPA2227PAG4 datasheet?
OPA2227PAG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA2227PAG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What makes the OPA2227PAG4 suitable for ECG and biomedical signal amplification at ±15 V?
The OPA2227PAG4 provides 120 dB minimum CMRR (138 dB typical) and 0.01 µA maximum bias current, which together reject 50 Hz or 60 Hz body-coupled interference and minimize electrode-impedance-induced offset in ECG circuits. Operating from ±15 V, the amplifier maintains 200 µV maximum input offset and delivers sub-microvolt noise performance across the 0.05 Hz to 150 Hz biomedical signal band.
For a strain-gauge bridge readout, how does OPA2227PAG4 outperform a general-purpose dual op-amp with 80 dB CMRR?
A 120 dB CMRR on OPA2227PAG4 rejects common-mode noise 1000 times more effectively than an 80 dB CMRR device. For a typical strain-gauge bridge driven from ±10 V, the OPA2227 limits common-mode-to-differential conversion error to less than 10 µV, compared to 10 mV for the 80 dB device — a 1000x improvement critical in sub-millivolt bridge output ranges.
How does packaging the two amplifier channels in one 8-pin PDIP help when breadboarding a dual-supply instrumentation circuit?
Placing both amplifiers in a single 8-pin PDIP (0.300 inch body width) reduces prototype wiring compared to two separate 8-pin DIPs, saving 20 mm of inter-component lead length and lowering stray capacitance below 2 pF between the two channels. Sharing a common ±18 V supply across both channels also simplifies decoupling: a single pair of 100 nF bypass capacitors at the supply pins serves both amplifiers simultaneously.
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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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