INA121UAAlternatives & Equivalent Parts
About INA121UA
INA121UA is a amplifiers component manufactured by Texas Instruments. It comes in a SO-8 package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | INA121UASource | INA128UA | AD8221ARZ |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Analog Devices |
| Package Type | SO-8 | Small Outline Packages | Small Outline Packages |
| Pin Count | 8 | 8 | 8 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 85.0°C |
| Price | $2.9104 | $7.1600 | $3.8600 |
| Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | |||
| 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 | — | — |
| Pbfree Code | — | Yes | No |
| YTEOL | — | 15 | 10 |
| Amplifier Type | — | INSTRUMENTATION AMPLIFIER | INSTRUMENTATION AMPLIFIER |
| Average Bias Current-Max (IIB) | — | 0.01 µA | 0.0015 µA |
| Bandwidth (3dB)-Nom | — | 1.3 MHz | 0.825 MHz |
| Bias Current-Max (IIB) @25C | — | 0.005 µA | — |
| Common-mode Reject Ratio-Min | — | 120 dB | 80 dB |
| Input Offset Current-Max (IIO) | — | 0.01 µA | 0.0006 µA |
| Input Offset Voltage-Max | — | 50 µV | 60 µV |
| JESD-30 Code | — | R-PDSO-G8 | R-PDSO-G8 |
| JESD-609 Code | — | e4 | e3 |
| Neg Supply Voltage Limit-Max | — | -18 V | -18 V |
| Neg Supply Voltage-Nom (Vsup) | — | -15 V | -15 V |
| Non-linearity-Max | — | 0.004% | 0.001% |
| 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 | — |
| Peak Reflow Temperature (Cel) | — | 260 | 260 |
| Qualification Status | — | Not Qualified | Not Qualified |
| Slew Rate-Nom | — | 4 V/us | 2 V/us |
| Subcategory | — | Instrumentation Amplifier | — |
| Supply Current-Max | — | 0.75 mA | 1 mA |
| Supply Voltage Limit-Max | — | 18 V | 18 V |
| Supply Voltage-Nom (Vsup) | — | 15 V | 15 V |
| Surface Mount | — | YES | YES |
| Technology | — | BIPOLAR | — |
| Temperature Grade | — | AUTOMOTIVE | INDUSTRIAL |
| Terminal Finish | — | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) |
| 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 | 30 |
| Voltage Gain-Max | — | 10000 | 1000 |
| Voltage Gain-Min | — | 1 | 1 |
| Voltage Gain-Nom | — | 10 | 10 |
| ## INA128UA Alternates Showing results | — | Image | — |
| Manufacturer Package Code | — | — | R-8 |
| ## AD8221ARZ Alternates Showing results | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 2 alternatives for INA121UA — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for INA121UA 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 INA121UA 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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FAQ
What is equivalent to INA121UA?
Known equivalents for INA121UA include INA128UA, AD8221ARZ. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of INA121UA?
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 INA121UA 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.