OPA4343NA/250 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments OPA4343NA/250 is a quad-channel, single-supply rail-to-rail operational amplifier from the MicroAmplifier series with 74 dB minimum CMRR and 60 nA max bias current. It operates on a single supply in a small-outline package for precision portable signal conditioning.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- OPA4343NA/250 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.3530(MOQ 1)
- 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 OPA4343NA/250?
- Quad-channel rail-to-rail input/output architecture on a single supply, enabling signal swing to within millivolts of both rails for 3 V and 5 V battery-powered systems
- Ultra-low input bias current maximum of 60 nA (10 nA at 25°C) and 10 nA max offset current minimizing error in high-impedance sensor interfaces
- 92 dB typical common-mode rejection ratio (CMRR) with voltage-feedback architecture and internal frequency compensation for stable closed-loop operation without external capacitors
What is OPA4343NA/250 used for?
OPA4343NA/250 is designed for precision signal conditioning in portable medical devices, handheld instrumentation, and battery-powered data acquisition systems where rail-to-rail swing on a single 3 V to 5 V supply is required across all 4 amplifier channels. Its ultra-low bias current and high CMRR make it well suited for pH probes, photodiode transimpedance amplifiers, and bridge-sensor signal chains that demand minimal input loading and strong common-mode noise rejection.
What are the specifications of OPA4343NA/250?
| Pbfree Code | Yes |
| YTEOL | 1 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00006 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 Current-Max (IIO) | 0.00001 µA |
| Input Offset Voltage-Max | 8000 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 | 6V/us |
| Supply Current-Max | 5mA |
| Supply Voltage Limit-Max | 7.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 5500 |
| Voltage Gain-Min | 40000 |
| 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 |
| Country of Origin | Malaysia |
Where can I find the OPA4343NA/250 datasheet?
OPA4343NA/250 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA4343NA/250?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does OPA4343NA/250's 60 nA maximum bias current benefit a high-impedance pH electrode measurement circuit?
With a maximum input bias current of 60 nA (10 nA typical at 25°C) and 10 nA max offset current, OPA4343NA/250 introduces less than 10 µV of input offset error across a 1 MΩ pH electrode source impedance, preserving measurement accuracy to within ±0.01 pH units without any input bias compensation resistors.
For a 3.3 V single-supply ADC driver in a portable sensor, how close to the supply rails does OPA4343NA/250's output swing?
OPA4343NA/250 provides true rail-to-rail output swing, reaching within 10 mV of ground and within 10 mV of the 3.3 V supply rail at light load currents below 1 mA, enabling the full 3.28 V output span to be used by the downstream ADC without headroom losses that would otherwise reduce dynamic range by 6 dB.
When is OPA4343NA/250 in a small-outline package a more practical choice than a discrete quad op-amp DIP configuration for a portable design?
OPA4343NA/250 integrates all 4 amplifiers in a single small-outline package occupying under 30 mm² of PCB area compared to 4 separate DIP-8 packages requiring over 400 mm², while delivering 74 dB minimum CMRR and 92 dB typical CMRR per channel, reducing BOM part count by 3 components and cutting layout routing complexity in battery-powered portable instruments.
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
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $6.0075 | $6.01 |
| 18+ | $4.0050 | $72.09 |
| 50+ | $2.5718 | $128.59 |
| 150+ | $2.4624 | $369.36 |
| 250+ | $2.3530 | $588.25 |
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