INA155EA/250 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The INA155EA/250 is a precision instrumentation amplifier from Texas Instruments with 1 mV maximum offset voltage, 92 dB minimum CMRR, and 0.55 MHz bandwidth. It operates on 3 V or 5 V supply rails in an 8-Pin MSOP package. Available from stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- INA155EA/250 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0413(MOQ 1)
- 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 INA155EA/250?
- 92 dB minimum common-mode rejection ratio for accurate differential measurements in noisy environments
- Ultra-low 10 pA maximum bias current enabling high-impedance sensor interfacing without loading errors
- 1 mV maximum input offset voltage ensuring precise signal amplification in instrumentation applications
- Operates from 3 V or 5 V single supply rails for flexible mixed-voltage system integration
What is INA155EA/250 used for?
The INA155EA/250 is well-suited for precision sensor signal conditioning in industrial and medical measurement systems where high common-mode noise rejection is critical. It supports bridge sensor amplification, thermocouple and strain gauge interfaces, and data acquisition front-ends requiring low offset and wide bandwidth. The 8-Pin MSOP package enables compact PCB layouts in portable and space-constrained instrumentation designs.
What are the specifications of INA155EA/250?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Amplifier Type | INSTRUMENTATION AMPLIFIER |
| Average Bias Current-Max (IIB) | 0.00001 µA |
| Bandwidth (3dB)-Nom | 0.55MHz |
| Bias Current-Max (IIB) @25C | 0.00001 µA |
| Common-mode Reject Ratio-Min | 92dB |
| Input Offset Current-Max (IIO) | 0.00001 µA |
| Input Offset Voltage-Max | 1000 µV |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e4 |
| Non-linearity-Max | 0.015% |
| 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 | 6.5V/us |
| Supply Current-Max | 2.8mA |
| Supply Voltage Limit-Max | 7.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| 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 | 50 |
| Voltage Gain-Min | 10 |
| Voltage Gain-Nom | 10 |
| 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 INA155EA/250 datasheet?
INA155EA/250 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for INA155EA/250?
Compatible alternatives and drop-in replacements for INA155EA/250:
Instrumentation Amplifier, 1 Func, 1000uV Offset-Max, 0.55MHz Band Width, CMOS, PDSO8
Frequently Asked Questions
What common-mode rejection ratio does the INA155EA/250 provide and why does it matter?
The INA155EA/250 offers a minimum CMRR of 92 dB, meaning it rejects common-mode noise by more than 92 dB relative to the differential signal. This performance is essential in industrial sensor interfaces where power-line interference and ground loops can introduce hundreds of millivolts of common-mode noise onto differential measurement lines.
How does the INA155EA/250 handle high-impedance sensors such as bridge transducers?
With a maximum input bias current of only 10 pA (0.00001 µA), the INA155EA/250 draws negligible current from the signal source, making it ideal for high-impedance bridge transducers, strain gauges operating above 10 kΩ, and pH electrodes. This low bias current prevents loading errors that would otherwise shift the bridge output voltage by microvolts.
Can the INA155EA/250 operate from a 3.3 V single supply in a battery-powered design?
The INA155EA/250 supports single-supply operation from 3 V to 5 V, making it compatible with 3.3 V systems powered by lithium-ion or alkaline battery packs. Its rail-to-rail output swing maximises usable dynamic range over the full supply, and the 8-Pin MSOP package keeps board area below 9 mm² for compact portable instruments.
What bandwidth does the INA155EA/250 support and which signal frequencies are suitable?
The INA155EA/250 has a 3 dB bandwidth of 0.55 MHz (550 kHz), suitable for DC and low-frequency AC measurements up to several hundred kilohertz. Typical applications include 50 Hz and 60 Hz mains rejection, audio-frequency biomedical signals under 20 kHz, and pressure sensor outputs changing at rates below 100 kHz, all within its linear operating bandwidth.
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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.
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