INA321E/250 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The Texas Instruments INA321E/250 is a precision rail-to-rail output instrumentation amplifier with a 0.5mV maximum input offset voltage, 90dB minimum CMRR, and 0.5MHz bandwidth, supporting 3V and 5V single-supply operation. It features an ultra-low bias current of 0.00001µA and input offset current of 0.00001µA, enabling accurate signal acquisition from high-impedance sensors. Available in a compact 8-pin MSOP package with RoHS-compliant, lead-free construction for precision measurement applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- INA321E/250 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.5390(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 INA321E/250?
- 90dB minimum common-mode rejection ratio ensures excellent noise immunity for precise differential signal measurement in noisy environments
- 0.5mV maximum input offset voltage delivers high accuracy signal amplification without introducing significant DC measurement error
- Ultra-low 0.00001µA bias and offset currents minimize loading on high-impedance sensors such as thermocouples and strain gauges
- Rail-to-rail output and single 3V or 5V supply operation enables precision measurement in low-voltage battery-powered portable instruments
What is INA321E/250 used for?
The INA321E/250 is designed for precision sensor signal conditioning in medical instruments, industrial measurement systems, and portable data acquisition devices where accurate amplification of small differential signals in the presence of large common-mode voltages is required. Its ultra-low bias current and high CMRR make it ideal for interfacing with bridge sensors, thermocouples, strain gauges, and other high-impedance transducers operating from low-voltage supplies. The compact MSOP package and rail-to-rail output enable integration into space-constrained, battery-powered precision instrumentation designs.
What are the specifications of INA321E/250?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Amplifier Type | INSTRUMENTATION AMPLIFIER |
| Average Bias Current-Max (IIB) | 0.00001 µA |
| Bandwidth (3dB)-Nom | 0.5MHz |
| Bias Current-Max (IIB) @25C | 0.00001 µA |
| Common-mode Reject Ratio-Min | 90dB |
| Input Offset Current-Max (IIO) | 0.00001 µA |
| Input Offset Voltage-Max | 500 µV |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e4 |
| Non-linearity-Max | 0.01% |
| 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 |
| Supply Current-Max | 0.07mA |
| Supply Voltage Limit-Max | 7.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Gain-Max | 1000 |
| Voltage Gain-Min | 5 |
| Voltage Gain-Nom | 25 |
| 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 INA321E/250 datasheet?
INA321E/250 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for INA321E/250?
Compatible alternatives and drop-in replacements for INA321E/250:
Instrumentation Amplifier, 1 Func, 500uV Offset-Max, 0.5MHz Band Width, CMOS, PDSO8
Frequently Asked Questions
What is the CMRR of the INA321E/250?
The INA321E/250 provides a minimum common-mode rejection ratio of 90dB, which ensures excellent rejection of common-mode noise and interference, making it ideal for amplifying small differential signals in electrically noisy industrial and medical measurement environments.
What is the input offset voltage of the INA321E/250?
The INA321E/250 has a maximum input offset voltage of 500µV (0.5mV), which minimizes DC measurement error and ensures accurate signal amplification in precision instrumentation applications such as bridge sensors and thermocouple interfaces.
What supply voltages does the INA321E/250 support?
The INA321E/250 operates from 3V and 5V single-supply voltages, making it suitable for battery-powered portable instruments and low-voltage embedded systems that require precision instrumentation amplification without dual-supply power rails.
What is the bandwidth of the INA321E/250?
The INA321E/250 has a nominal -3dB bandwidth of 0.5MHz, providing sufficient frequency response for most sensor signal conditioning applications including audio measurement, strain gauge bridges, and low-frequency data acquisition systems.
What package is the INA321E/250 available in?
The INA321E/250 is housed in an 8-pin MSOP (Mini Small Outline Package), identified by JESD-30 code S-PDSO-G8, which provides a very compact PCB footprint for precision instrumentation amplifier integration in space-constrained portable and wearable device designs.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.5600 | $3.56 |
| 9+ | $2.2500 | $20.25 |
| 20+ | $1.7100 | $34.20 |
| 50+ | $1.6074 | $80.37 |
| 150+ | $1.5390 | $230.85 |
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