OPA4379AIPWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The OPA4379AIPWRG4 is a quad rail-to-rail input/output operational amplifier operating from a 1.8 V supply with only 2.9 µA quiescent current per channel and a 90 kHz gain-bandwidth product in a 14-pin SOIC package. It delivers 100 dB typical common-mode rejection ratio and 2000 µV maximum input offset for precise low-power signal conditioning. Available from Texas Instruments with worldwide stock.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- OPA4379AIPWRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.8 V minimum supply with 2.9 µA quiescent current per channel enabling ultra-low-power battery-operated sensor designs
- Rail-to-rail input and output with 100 dB typical CMRR supporting precision differential signal acquisition in tight voltage budgets
- Quad op amp in a 14-pin SOIC package with 90 kHz gain-bandwidth product for space-efficient multi-channel filtering
Applications
The OPA4379AIPWRG4 is optimized for battery-powered portable instruments, wearable health monitors, and IoT sensor nodes that require four independent amplifier channels from a single low-voltage rail. Its 2.9 µA per-channel quiescent current extends battery life in always-on signal conditioning front ends. The rail-to-rail I/O and 100 dB CMRR make it suitable for bridge sensor amplification, ECG signal chains, and low-frequency active filter implementations.
Specifications
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00005 µA |
| Bias Current-Max (IIB) @25C | 0.00005 µA |
| Common-mode Reject Ratio-Min | 62dB |
| Common-mode Reject Ratio-Nom | 100dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 2000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 4 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.03V/us |
| Supply Current-Max | 0.04mA |
| Supply Voltage Limit-Max | 7V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 90 |
| Voltage Gain-Min | 10000 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for OPA4379AIPWRG4:
Frequently Asked Questions
How much current does the OPA4379AIPWRG4 draw per channel, and why does this matter for IoT sensor nodes?
The OPA4379AIPWRG4 draws only 2.9 µA quiescent current per channel, meaning all 4 channels together consume roughly 11.6 µA. In IoT sensor nodes powered by a coin cell, this ultra-low consumption allows the signal conditioning front end to remain active for months without depleting the battery, making it far more practical than conventional op amps drawing hundreds of microamps.
What is the gain-bandwidth product of the OPA4379AIPWRG4, and which sensor signal bandwidths can it amplify accurately?
The OPA4379AIPWRG4 has a gain-bandwidth product of 90 kHz, which supports audio, biomedical (ECG, EEG, PPG), and low-frequency industrial sensor signals typically below 10 kHz. At a gain of 10, the usable bandwidth is approximately 9 kHz, sufficient for most wearable health monitoring and environmental sensor applications that do not require high-speed data acquisition.
For a Wheatstone bridge pressure sensor operating at 1.8 V, how does the OPA4379AIPWRG4's CMRR protect measurement accuracy?
With a 100 dB typical common-mode rejection ratio, the OPA4379AIPWRG4 suppresses common-mode noise on the bridge output by a factor of 100,000, preserving measurement accuracy even when the 1.8 V supply carries ripple. A 2000 µV maximum input offset can be trimmed digitally or budgeted in system calibration, keeping total pressure measurement error within acceptable bounds for medical and industrial applications.
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