

INA128UA
Texas Instruments
-18V~-2.25V、2.25V~18V -40℃~+125℃ 1 1.3MHz 10nA 125dB 12us 18mA 1V/V~10000V/V 200nV/℃ 25uV 2nA 30pA/℃ 4.5V~36V 4V/us 700uA 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 INA128UA is an instrumentation Amplifier made by Texas Instruments in a SOIC-8 package with 8 pins. -18V~-2.25V、2.25V~18V -40℃~+125℃ 1 1.3MHz 10nA 125dB 12us 18mA 1V/V~10000V/V 200nV/℃ 25uV 2nA 30pA/℃ 4.5V~36V 4V/us 700uA 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. 177 are in stock at JLCPCB (part C1346225). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
19- -3dB Bandwidth
- 1.3MHz
- Common Mode Rejection Ratio(CMRR)
- 125dB
- Dual Supply
- 2.25V~18V
- Features
- External resistor gain
- Ib - Input Bias Current
- 2nA
- Input Offset Current Drift (Ios TC)
- 30pA/℃
- Input Offset Current(Ios)
- 10nA
- Input Offset Voltage Drift(Vos TC)
- 200nV/℃
- Input Voltage Noise Density
- 8nV/√Hz@1kHz
- Number of Channels
- Single-channel
- Operating Temperature
- -40℃~+125℃
- Output Current
- 18mA
- Output Type
- Single-Ended
- Quiescent Current(Iq)
- 700uA
- Settling time
- 12us
- Single Supply
- 4.5V~36V
- Slew Rate
- 4V/us
- Voltage Gain
- 1V/V~10000V/V
- Vos - Input Offset Voltage
- 25uV
Order codes
1- INA128UALCSC C1346225
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 1- 2 layers73.5 × 92.8 mm

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Is there a KiCad symbol and footprint for the INA128UA?
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 INA128UA?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the INA128UA datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the INA128UA?
JLCPCB lists it as part C1346225, with 177 in stock; the sellers' links on this page open their listings.
What can replace the INA128UA?
Parts like it in the library: the INA821ID by Texas Instruments, the INA849D by Texas Instruments, the INA828ID by Texas Instruments and the AD8421BRZ-R7 by Analog Devices. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the INA128UA?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
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