INA121UAlternatives & Equivalent Parts
About INA121U
INA121U is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Small Outline Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | INA121USource | INA121UA | INA121UG4 |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Small Outline Packages | SO-8 | Small Outline Packages |
| Pin Count | 8 | 8 | 8 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $7.0400 | $2.9104 | $6.2677 |
| Electrical Parameters | |||
| Pbfree Code | Yes | — | — |
| YTEOL | 15 | — | 0 |
| Amplifier Type | INSTRUMENTATION AMPLIFIER | — | INSTRUMENTATION AMPLIFIER |
| Average Bias Current-Max (IIB) | 0.00005 µA | — | 0.00005 µA |
| Bandwidth (3dB)-Nom | 0.6 MHz | — | 0.6 MHz |
| Bias Current-Max (IIB) @25C | 0.00005 µA | — | 0.00005 µA |
| Common-mode Reject Ratio-Min | 106 dB | — | 106 dB |
| Input Offset Current-Max (IIO) | 5e-7 µA | — | 5e-7 µA |
| Input Offset Voltage-Max | 500 µV | — | 500 µV |
| JESD-30 Code | R-PDSO-G8 | — | R-PDSO-G8 |
| Neg Supply Voltage Limit-Max | -18 V | — | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V | — | -15 V |
| Non-linearity-Max | 0.002% | — | 0.002% |
| Number of Functions | 1 | — | 1 |
| Package Body Material | PLASTIC/EPOXY | — | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 | — | SOP8,.25 |
| Package Shape | RECTANGULAR | — | RECTANGULAR |
| Package Style | SMALL OUTLINE | — | SMALL OUTLINE |
| Packing Method | TUBE | — | TUBE |
| Peak Reflow Temperature (Cel) | 260 | — | 260 |
| Qualification Status | Not Qualified | — | Not Qualified |
| Slew Rate-Nom | 0.7 V/us | — | 0.7 V/us |
| Subcategory | Instrumentation Amplifier | — | Instrumentation Amplifier |
| Supply Current-Max | 0.53 mA | — | 0.525 mA |
| Supply Voltage Limit-Max | 18 V | — | 18 V |
| Supply Voltage-Nom (Vsup) | 15 V | — | 15 V |
| Surface Mount | YES | — | YES |
| Temperature Grade | INDUSTRIAL | — | INDUSTRIAL |
| Terminal Form | GULL WING | — | GULL WING |
| Terminal Pitch | 1.27 mm | — | 1.27 mm |
| Terminal Position | DUAL | — | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | — | NOT SPECIFIED |
| Voltage Gain-Max | 10000 | — | 10000 |
| Voltage Gain-Min | 1 | — | 1 |
| Voltage Gain-Nom | 10 | — | 10 |
| Supply Voltage | — | ±2.25V to ±18V | — |
| Input Bias Current | — | ±5pA | — |
| Offset Voltage | — | 800µV max | — |
| Gain Range | — | 1 to 10000 V/V | — |
| Operating Temperature | — | -40°C to 85°C | — |
| Package | — | SO-8 | — |
| Input Type | — | FET (JFET) | — |
| Quiescent Current | — | 900µA typical | — |
| JESD-609 Code | — | — | e4 |
| Terminal Finish | — | — | Nickel/Palladium/Gold (Ni/Pd/Au) |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
Why Look for Alternatives?
Finding alternatives for INA121U is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating INA121U replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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What is equivalent to INA121U?
Known equivalents for INA121U include INA121UA, INA121UG4. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of INA121U?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify INA121U alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.