INA2321EA/250 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The INA2321EA/250 is a micropower, single-supply CMOS instrumentation amplifier from Texas Instruments with a 0.5 MHz bandwidth and 80 dB minimum CMRR. It features an ultra-low bias current of 0.00001 µA and 1000 µV maximum input offset voltage in a 14-pin SOIC package. RoHS compliant and available in stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- INA2321EA/250 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low input bias current of 0.00001 µA (10 pA max) enabling precise measurement of high-impedance sensors without signal loading
- Single-supply CMOS operation ideal for battery-powered and low-voltage instrumentation systems
- Minimum 80 dB common-mode rejection ratio ensuring accurate differential signal measurement in noisy environments
- 0.5 MHz bandwidth supporting both DC precision measurements and moderate-frequency signal acquisition applications
Applications
The INA2321EA/250 is ideal for precision data acquisition systems, portable medical instruments, and battery-powered sensor interfaces where ultra-low power consumption and high input impedance are critical. Its single-supply CMOS design makes it well-suited for bridge sensor amplification, thermocouple conditioning, and low-level signal amplification in handheld instrumentation. The device is also commonly used in industrial process control and wearable health monitoring devices requiring accurate differential measurement.
Specifications
| 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 | 80dB |
| Input Offset Current-Max (IIO) | 0.00001 µA |
| Input Offset Voltage-Max | 1000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Non-linearity-Max | 0.01% |
| Number of Functions | 2 |
| 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 |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.4V/us |
| Supply Current-Max | 0.14mA |
| 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 | 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 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input bias current of the INA2321EA/250?
The INA2321EA/250 has an exceptionally low maximum input bias current (IIB) of 0.00001 µA (10 pA) at 25°C, making it ideal for interfacing with high-impedance sensors such as pH electrodes, photodiodes, and piezoelectric transducers.
What is the bandwidth of the INA2321EA/250?
The INA2321EA/250 has a nominal 3 dB bandwidth of 0.5 MHz, providing sufficient frequency response for precision DC measurement applications as well as moderate-frequency AC signal conditioning in instrumentation systems.
What package is the INA2321EA/250 available in?
The INA2321EA/250 is packaged in a 14-pin SOIC (R-PDSO-G14, JESD-30 code), a small surface-mount outline package that is widely supported by PCB assembly processes and offers a good balance between size and thermal dissipation.
What is the common-mode rejection ratio of the INA2321EA/250?
The INA2321EA/250 provides a minimum CMRR of 80 dB, which ensures effective rejection of common-mode interference and noise on both input lines, critical for accurate differential measurements in industrial and medical environments.
Can the INA2321EA/250 operate from a single supply?
Yes, the INA2321EA/250 is specifically designed for single-supply operation using CMOS technology, making it highly suitable for battery-powered portable instruments, wearable devices, and low-voltage data acquisition systems where dual supply rails are not available.
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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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