OPA4344PAG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments OPA4344PAG4 is a quad rail-to-rail low-power single-supply operational amplifier with 1 MHz bandwidth, 74 dB minimum CMRR, and ultra-low 10 pA bias current in a 14-pin DIP package. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- OPA4344PAG4 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 OPA4344PAG4?
- Quad rail-to-rail input and output operation from a single 2.3 V to 5.5 V supply, enabling amplification of signals spanning the full supply range in single-supply portable and battery-powered designs
- Ultra-low bias current of 0.00001 µA (10 pA) maximum, making the OPA4344PAG4 ideal for high-impedance sensor interfaces such as photodiode transimpedance and pH electrode amplifiers
- 74 dB minimum (92 dB typical) common-mode rejection ratio combined with 1200 µV maximum input offset voltage, providing stable amplification accuracy in instrumentation and signal conditioning circuits
What is OPA4344PAG4 used for?
The OPA4344PAG4 is suited for battery-powered instrumentation, sensor signal conditioning, and portable medical devices where four independent low-power amplifier channels must operate from a single 2.3 V to 5.5 V supply. Its rail-to-rail output swing maximizes dynamic range in single-supply data acquisition front ends interfacing with 12-bit or 16-bit ADCs. The ultra-low 10 pA bias current makes it particularly effective in high-impedance photodiode, pH sensor, and electrochemical cell measurement circuits.
What are the specifications of OPA4344PAG4?
| 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 | 74dB |
| Common-mode Reject Ratio-Nom | 92dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 1200 µV |
| JESD-30 Code | R-PDIP-T14 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 4 |
| 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 | 0.8V/us |
| Supply Current-Max | 1.2mA |
| Supply Voltage Limit-Max | 7.5V |
| Supply Voltage-Nom (Vsup) | 5.5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 1000 |
| Voltage Gain-Min | 31600 |
| 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 OPA4344PAG4 datasheet?
OPA4344PAG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA4344PAG4?
Compatible alternatives and drop-in replacements for OPA4344PAG4:
Frequently Asked Questions
What supply voltage range does the OPA4344PAG4 support for single-supply battery-powered designs?
The OPA4344PAG4 operates from a single supply between 2.3 V and 5.5 V, or a split supply of ±1.15 V to ±2.75 V. This range covers 2 x AA alkaline batteries (3 V), single-cell lithium-ion (3.0 V to 4.2 V), and regulated 3.3 V or 5 V logic supply rails commonly used in embedded systems and portable instruments.
How does the OPA4344PAG4's 10 pA bias current benefit high-impedance sensor interfaces?
At only 0.00001 µA (10 pA) maximum input bias current, the OPA4344PAG4 introduces negligible voltage error across high-impedance sources such as pH electrodes (100 MΩ or higher) or photodiodes. A 10 pA bias current through a 1 GΩ source impedance produces less than 10 mV of offset error, preserving measurement accuracy in sensitive electrochemical and optical sensor applications.
For a 14-pin DIP prototyping application, how many amplifier channels does the OPA4344PAG4 provide and at what bandwidth?
The OPA4344PAG4 provides 4 independent op-amp channels in a single 14-pin DIP (PDIP-T14) package, with a gain-bandwidth product of approximately 1 MHz per channel. This allows a single IC to implement a 4-channel signal conditioning front end on a breadboard or through-hole prototype PCB, replacing 4 discrete single-channel op-amps and reducing component count.
When would an engineer choose the OPA4344PAG4 over lower-cost general-purpose quad op-amps like the LM324?
The OPA4344PAG4 is preferred over the LM324 when rail-to-rail output swing, single-supply operation below 5 V, or input bias currents below 1 nA are required. The LM324 cannot swing within 1.5 V of the positive supply and has bias currents in the 20 nA to 100 nA range, causing significant errors in high-impedance or low-voltage measurement circuits where the OPA4344PAG4's 10 pA bias and full rail-to-rail swing are critical.
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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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