The Texas Instruments INA128UA/2K5 is a low-power precision instrumentation amplifier with 50 µV maximum offset, 120 dB minimum CMRR and gain programmable from 1 to 10,000 with one resistor. Operating from ±2.25 V to ±18 V in an 8-pin SOIC, it targets bridge, strain-gauge and medical measurement.
Key Specifications
| Manufacturer | Texas Instruments |
| Exact Manufacturer Part Number | INA128UA/2K5 |
| Product Category | Amplifiers – Instrumentation |
| Series / Family | INA128 |
| Package / Case | SOIC-8 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C to +125°C |
| Power Supply | ±2.25 V to ±18 V |
| Type | Instrumentation amplifier |
| Offset | 50 µV max |
| CMRR | 120 dB min |
| Gain | 1 to 10,000 |
| Lifecycle Status | Active |
| Official Documentation | View official documentation |
Key Features
- Low-power precision instrumentation amplifier
- 50 µV maximum offset voltage
- 120 dB minimum CMRR
- Gain from 1 to 10,000 with one resistor
- ±2.25 V to ±18 V supply
- 8-pin SOIC
- Widely used in industrial, consumer and embedded electronic designs
- Available for fast quotation through CHIPER
Applications
- Bridge and strain-gauge measurement
- Medical instrumentation
- Data acquisition
- Thermocouples
Sourcing
Availability, lead time, date code and commercial terms are subject to confirmation at the time of quotation.
Quality
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FAQ
How is the INA128 gain set?
Its gain is programmed from 1 to 10,000 with a single external resistor.
What is the CMRR of the INA128?
It provides 120 dB minimum common-mode rejection.
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