OPA2347UAG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments OPA2347UAG4 is a dual micropower rail-to-rail op-amp in 8-pin SOIC package, featuring 10 pA bias current and 80 dB common-mode rejection ratio. It operates from 2.5 V to 5.5 V single supply with ultra-low quiescent current for battery-powered sensing. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA2347UAG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA2347UAG4?
- Ultra-low 10 pA input bias current minimizes error in high-impedance sensor interfaces such as pH probes and photodiodes
- Rail-to-rail input and output with 80 dB CMRR enables accurate single-supply signal conditioning down to 2.5 V
- Dual op-amp in 8-pin SOIC reduces component count and PCB area in portable instrumentation designs
What is OPA2347UAG4 used for?
The OPA2347UAG4 excels in battery-powered portable instruments, medical monitoring devices, and low-power sensor front-ends where its micropower quiescent current extends operating time from coin cells or single Li-ion batteries. Its 10 pA bias current makes it ideal for conditioning signals from high-impedance transducers such as electrochemical sensors, photodiodes, and charge-output accelerometers. The rail-to-rail operation maximizes dynamic range from a 3.3 V or 5 V single supply without dual-rail power supplies.
What are the specifications of OPA2347UAG4?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00001 µA |
| Bias Current-Max (IIB) @25C | 0.00001 µA |
| Common-mode Reject Ratio-Min | 70dB |
| Common-mode Reject Ratio-Nom | 80dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 7000 µV |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.17V/us |
| Supply Current-Max | 0.076mA |
| Supply Voltage Limit-Max | 7.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 350 |
| Voltage Gain-Min | 25110 |
| 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 |
Where can I find the OPA2347UAG4 datasheet?
OPA2347UAG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA2347UAG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How low is the input bias current of the OPA2347UAG4 and which sensor types benefit most?
The OPA2347UAG4 specifies a maximum input bias current of 10 pA (0.00001 µA) at 25°C, making it well suited for pH sensors with glass electrode impedances of 100 MΩ to 1 GΩ, photodiode transimpedance amplifiers, and charge-output sensors where picoamp-level bias currents would create unacceptable DC offset voltages. At 10 pA bias into a 100 MΩ source, the resulting voltage error is only 1 mV.
What supply voltage range does the OPA2347UAG4 support for single-supply portable designs?
The OPA2347UAG4 operates from a 2.5 V to 5.5 V single supply, covering 3 V lithium coin cells, 3.3 V microcontroller rails, and 5 V regulated supplies without requiring dual-rail power. Rail-to-rail input and output allows signal conditioning of sensors with outputs spanning the full supply range, maximizing 70 dB CMRR performance from 2.5 V to 5.5 V.
For a dual-channel ECG front-end, how does OPA2347UAG4 reduce external component count?
The dual-amplifier configuration of the OPA2347UAG4 places 2 independent op-amps in a single 8-pin SOIC package, allowing both differential ECG channels to share one device. This halves the number of amplifier packages, reduces inter-amplifier routing length, and lowers BOM cost compared to two discrete single op-amps, while the 80 dB CMRR rejects 50 Hz/60 Hz common-mode interference from mains coupling.
When is OPA2347UAG4 a better fit than OPA2340 for a precision bridge sensor interface?
For a resistive bridge sensor interface where source impedance exceeds 10 MΩ — such as a capacitive humidity sensor or an isolated pH electrode — the OPA2347UAG4's 10 pA bias current introduces far less offset than the OPA2340's higher bias specification. The 7 mV maximum input offset voltage of OPA2347UAG4 is acceptable when system-level calibration is performed, and the lower bias current provides dominant accuracy improvement for high-impedance bridge configurations.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit