

INA128U
Texas Instruments
-18V~-2.25V、2.25V~18V -40℃~+85℃ 1 10uV 130dB 200nV/℃ 2nA 30pA/℃ 4.5V~36V 4V/us 5nA 6mA 700uA 7us 8nV/√Hz@1kHz External resistor gain、Overvoltage protection Single-Ended SOIC-8 Instrumentation Amplifiers ROHS
- Category
- Instrumentation Amplifiers
- Package
- SOIC-8
- Pins
- 8
Overview
The INA128U is an instrumentation Amplifier made by Texas Instruments in a SOIC-8 package with 8 pins. -18V~-2.25V、2.25V~18V -40℃~+85℃ 1 10uV 130dB 200nV/℃ 2nA 30pA/℃ 4.5V~36V 4V/us 5nA 6mA 700uA 7us 8nV/√Hz@1kHz External resistor gain、Overvoltage protection Single-Ended SOIC-8 Instrumentation Amplifiers ROHS.
PCBKit's library has its KiCad symbol (Amplifier_Instrumentation:INA128, from KiCad's library) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 84 are in stock at JLCPCB (part C2872992). 38 open-source boards in 28 repositories on GitHub use it.
Symbol
Footprint
Parameters
17- Common Mode Rejection Ratio(CMRR)
- 130dB
- Dual Supply
- -18V~-2.25V
- Features
- Overvoltage Protection
- Ib - Input Bias Current
- 2nA
- Input Offset Current Drift (Ios TC)
- 30pA/℃
- Input Offset Current(Ios)
- 5nA
- Input Offset Voltage Drift(Vos TC)
- 200nV/℃
- Input Voltage Noise Density
- 8nV/√Hz@1kHz
- Number of Channels
- Single-channel
- Operating Temperature
- -40℃~+85℃
- Output Current
- 6mA
- Output Type
- Single-Ended
- Quiescent Current(Iq)
- 700uA
- Settling time
- 7us
- Single Supply
- 4.5V~36V
- Slew Rate
- 4V/us
- Vos - Input Offset Voltage
- 10uV
Order codes
1- INA128ULCSC C2872992
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | Rg | Passive |
| 2 | - | Input |
| 3 | + | Input |
| 4 | V- | Power in |
| 5 | Ref | Input |
| 6 | — | Output |
| 7 | V+ | Power in |
| 8 | Rg | Passive |
Open-source boards using it
All 38- 2 layers70.1 × 50 mm

- 2 layers182.9 × 83.8 mm

Schematic3
alberto-battistel/Teensy-EIS
Transform your teensy 3.6 (pjrc.com) into an instrument for electrochemical impedance spectroscopy.
37 parts6GPL-3.0 - 2 layers100 × 70 mm

- 2 layers85 × 55 mm

Final schematics
shreenandansonu/Electronic-Stethescope
EKOBIT is an electronics stethoscope, a AFE signal board for a digital stethoscope.
59 parts3MIT - 2 layers41.9 × 22 mm

Modular Filter 603 kicad
TZeng0698/Portable-EEG-with-Modular-Pre-Filtering-for-BCI-Applications
A Low-cost EEG BCI implementation with modular filtering card and ADS1298. The repo contains the PCB files and a guide to design your own(in progress).
42 parts3 - 2 layers69.5 × 25 mm

B3.1
Neurotechnology-Exploration-Team/Psylink-NXT
This is intended as a human input device (like a keyboard) that predicts your intention from muscle signals. Using a neural network, trained through a process where you press keys at the exact same time that you make…
56 parts2GPL-3.0 - 2 layers90 × 100 mm

Fonte corrente bipolar V01
Pinheirogustavo/PCB_projects
O gerador de sinais é baseado no AD9850. São gerados dois sinais senoidais e dois sinais quadrados, com banda de frequência entre 1 Hz e 40 MHz.
56 parts2 - 4 layers200 × 142.3 mm

FRED Electrical Scheme KiCAD
GiulianoAgostini04/FRED-Project
Real-time concentration monitoring system based on frontal-lobe EEG signals. Features a custom PCB designed with TinkerCAD and KiCad, OpenBCI Ganglion and Arduino UNO for signal acquisition, display, and frequency-band…
93 parts1MIT
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<iframe src="https://pcbkit.io/embed/parts/ti/INA128U" title="INA128U in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ti/INA128U.jpg" alt="INA128U" width="1200" height="900">[](https://pcbkit.io/parts/ti/INA128U)Questions
Is there a KiCad symbol and footprint for the INA128U?
Yes. The symbol is Amplifier_Instrumentation:INA128 and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the INA128U?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the INA128U datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the INA128U?
JLCPCB lists it as part C2872992, with 84 in stock; the sellers' links on this page open their listings.
What can replace the INA128U?
Parts like it in the library: the INA128UA/2K5 by Texas Instruments, the INA821ID by Texas Instruments, the INA826AID by Texas Instruments and the INA849D by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the INA128U?
38 boards in 28 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8INA128UA/2K5
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SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 0.025% 1 1.2V/us 100dB 120dB 12us 150pA 150pA 18mA 1V/V~1000V/V 20uV 2MHz 4.5V~36V 500nV/℃ 600uA 7nV/√Hz@1kHz External resistor gain、Overvoltage protection、EMI filtering/RF suppression SOIC-8 Instrumentation Amplifiers ROHSTexas InstrumentsInstrumentation Amplifiers