OPA2228PA Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
OPA2228PA is a dual, high-precision, low-noise operational amplifier featuring 8 nV/√Hz noise density, 120 dB CMRR, and 33 MHz bandwidth. Ideal for audio, instrumentation, and medical equipment. From $4.07, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- OPA2228PA Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.0700(MOQ 1)
- 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 noise: 8 nV/√Hz input voltage noise density for high-fidelity signal acquisition
- High precision: 120 dB min CMRR and 0.01 µA max bias current for accurate measurement
- Wide bandwidth: 33 MHz gain-bandwidth product supporting high-speed instrumentation applications
- Dual amplifier: two matched op-amps in a single DIP package for compact circuit design
- Voltage feedback architecture with frequency compensation for stable closed-loop gains ≥5
Applications
The OPA2228PA is widely used in precision instrumentation amplifiers, medical diagnostic equipment, and audio preamplifier circuits where low noise and high accuracy are critical. Its high CMRR and low offset current make it ideal for sensor signal conditioning in industrial data acquisition systems. It also serves well in active filter designs and scientific measurement applications requiring stable, low-distortion amplification.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| 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 (AVCL>=5) |
| Input Offset Current-Max (IIO) | 0.01 µA |
| Input Offset Voltage-Max | 75 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 | 11V/us |
| Subcategory | Operational Amplifier |
| Supply Current-Max | 7.6mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 33000 |
| 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 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage noise density of the OPA2228PA?
The OPA2228PA features an ultra-low input voltage noise density of 8 nV/√Hz at 1 kHz, making it suitable for precision low-noise amplification in audio, medical, and instrumentation applications where signal integrity is paramount.
What are the typical applications for the OPA2228PA?
The OPA2228PA is commonly used in precision instrumentation amplifiers, medical diagnostic equipment, audio preamplifiers, sensor signal conditioning, active filters, and scientific measurement systems. Its 120 dB CMRR and 0.01 µA max bias current make it ideal for high-accuracy data acquisition.
What package type does the OPA2228PA use and what is its pinout configuration?
The OPA2228PA comes in an 8-pin DIP (Dual-In-Line Package), which is through-hole friendly for prototyping and production. The 'PA' suffix specifically denotes the plastic DIP package, offering easy breadboard and PCB integration compared to surface-mount alternatives.
Can the OPA2228PA replace other dual precision op-amps like the OPA2227 or NE5532?
The OPA2228PA can replace the OPA2227 in applications requiring wider bandwidth (33 MHz vs 8 MHz), while offering similar precision. Compared to the NE5532, it provides significantly lower noise (8 nV/√Hz vs 5 nV/√Hz) and much higher CMRR (120 dB vs 70 dB), though at a higher price point around $4.07.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.2500 | $5.25 |
| 10+ | $5.0200 | $50.20 |
| 25+ | $4.9400 | $123.50 |
| 500+ | $4.5800 | $2290.00 |
| 1000+ | $4.3300 | $4330.00 |
| 10000+ | $4.0700 | $40700.00 |
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