INA126EA/2K5 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Micropower instrumentation amplifier by Texas Instruments. Single-supply operation with 83dB CMRR, 250µV max offset voltage, 0.2MHz bandwidth, and 50nA bias current. Ideal for medical instrumentation, bridge sensors, and precision data acquisition in space-constrained applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- INA126EA/2K5 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.9260(MOQ 90)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Micropower single-supply instrumentation amplifier with rail-to-rail output swing
- 83dB minimum CMRR with 250µV max input offset voltage for high-precision signal conditioning
- Ultra-low bias current of 25nA at 25°C, ideal for high-impedance sensor interfaces
- 0.2MHz bandwidth supports dynamic sensor signals in medical and industrial applications
- Available in compact SOIC-8 (S-PDSO-G8) package with tape-and-reel option (2500 pcs)
Applications
The INA126EA/2K5 is widely used in medical instrumentation such as ECG and patient monitoring equipment, where low power consumption and high accuracy are essential. It excels in precision bridge transducer amplification for strain gauge, load cell, and pressure sensor applications. The device is also well-suited for thermocouple signal conditioning, portable industrial data acquisition systems, and any battery-powered design requiring micropower operation with minimal offset error.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Amplifier Type | INSTRUMENTATION AMPLIFIER |
| Average Bias Current-Max (IIB) | 0.05 µA |
| Bandwidth (3dB)-Nom | 0.2MHz |
| Bias Current-Max (IIB) @25C | 0.025 µA |
| Common-mode Reject Ratio-Min | 83dB |
| Input Offset Current-Max (IIO) | 0.005 µA |
| Input Offset Voltage-Max | 250 µV |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e4 |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Non-linearity-Max | 0.012% |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.4V/us |
| Subcategory | Instrumentation Amplifier |
| Supply Current-Max | 0.2mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| 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 |
| Voltage Gain-Max | 10000 |
| Voltage Gain-Min | 5 |
| Voltage Gain-Nom | 100 |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for INA126EA/2K5:
Amplifier, 1 Func, 250uV Offset-Max, 0.2MHz Band Width, BIPolar, PDSO8
Frequently Asked Questions
What is the gain range and how is it set on the INA126EA/2K5?
The INA126EA/2K5 gain is set with a single external resistor (RG) connected between pins 1 and 8. The gain equation is G = 5 + (80kΩ / RG), allowing a gain range from 5 V/V up to several thousand. For example, RG = 909Ω sets G ≈ 93 V/V. No gain-setting resistors are needed for G=5 (leave pins 1 and 8 open).
What are the supply voltage requirements for the INA126EA/2K5?
The INA126EA/2K5 operates from a single supply of 1.35V to 18V or dual supplies of ±18V maximum. It is designed for micropower applications, consuming typically only 175µA quiescent current, making it suitable for battery-powered and portable instruments.
What package and reel quantity does the INA126EA/2K5 come in?
The INA126EA/2K5 is supplied in the SOIC-8 surface-mount package (S-PDSO-G8) on a tape-and-reel of 2,500 pieces per reel, as indicated by the '2K5' suffix. This makes it convenient for automated PCB assembly in medium-to-high volume production runs.
What are typical applications for the INA126EA/2K5?
Typical applications include medical instrumentation (ECG, patient monitors), bridge transducer amplification for load cells and strain gauges, thermocouple and RTD signal conditioning, portable industrial data acquisition, and any precision analog front-end requiring low power consumption and high common-mode rejection ratio of 83dB minimum.
What is a suitable replacement or alternative for the INA126EA/2K5?
Pin-compatible or functionally similar alternatives include the INA126PA (DIP-8 through-hole version), INA128 and INA129 (higher precision, lower noise), and INA333 (zero-drift, lower power). For direct drop-in tape-and-reel SOIC replacement, the INA126EA/250 (250-piece reel) offers the same die in a smaller reel quantity.
Related Guides
How to Choose Samsung CL32B226KAJNNNE 22uF 25V X7R 1210 MLCC: Selection Guide for Decoupling and Bulk Capacitance
Complete selection guide for the Samsung CL32B226KAJNNNE 22uF 25V X7R 1210 MLCC: DC bias derating, temperature stability, ESR, and AEC-Q200 compliance for industrial decoupling applications.
Jun 12, 2026
How to Choose Samsung CL05A106MP5NUNC 10uF 10V X5R 0402 MLCC: Selection Guide for Compact Decoupling
Complete selection guide for Samsung CL05A106MP5NUNC 10uF 10V X5R 0402 MLCC: DC bias derating, package tradeoffs, and sourcing tips for compact decoupling.
Jun 12, 2026
ADSP-BF548BBCZ-5A Blackfin DSP Design Guide: Clocking, DDR, and Peripheral Configuration
Complete design guide for the ADSP-BF548BBCZ-5A 533 MHz Blackfin DSP: PLL sequencing, DDR memory timing, power rail order, and peripheral configuration for HMI, audio, and communications applications.
Jun 11, 2026
CL05B104KO5NNNC & 0402 X7R MLCC Selection Guide: How to Choose a 100 nF Decoupling Capacitor
A practical guide to selecting 100 nF 0402 X7R MLCCs for bypass and decoupling. Compare CL05B104KO5NNNC, CL21B104KBCNNNC, CL05B103KB5NNNC and choose the right voltage rating, dielectric, and package.
Jun 11, 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 |
|---|---|---|
| 90+ | $2.2223 | $200.01 |
| 117+ | $2.1482 | $251.34 |
| 156+ | $1.9260 | $300.46 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”