

INA331IDGKR
Texas Instruments
-55℃~+125℃ 0.1% 0.5pA 0.5pA 1 1.7us 2.5V~5.5V 250uV 2MHz 415uA 46nV/√Hz@1kHz 50uV/℃ 5V/V~1000V/V 5V/us 94dB External resistor gain、ESD protection、Internally set gain、Enable/shutdown function、Integrated ADC driver Rail-to-rail output VSSOP-8 Instrumentation Amplifiers ROHS
- Category
- Instrumentation Amplifiers
- Package
- VSSOP-8
- Pins
- 8
Overview
The INA331IDGKR is an instrumentation Amplifier made by Texas Instruments in a VSSOP-8 package with 8 pins. -55℃~+125℃ 0.1% 0.5pA 0.5pA 1 1.7us 2.5V~5.5V 250uV 2MHz 415uA 46nV/√Hz@1kHz 50uV/℃ 5V/V~1000V/V 5V/us 94dB External resistor gain、ESD protection、Internally set gain、Enable/shutdown function、Integrated ADC driver Rail-to-rail output VSSOP-8 Instrumentation Amplifiers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:INA321EA_2K5, from EasyEDA) and its footprint (Package_SO:VSSOP-8_3x3mm_P0.65mm, from KiCad's library), ready for a KiCad board. 189 are in stock at JLCPCB (part C2863664). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
17- -3dB Bandwidth
- 2MHz
- Common Mode Rejection Ratio(CMRR)
- 94dB
- Features
- External resistor gain
- Gain Error
- 0.1%
- Ib - Input Bias Current
- 0.5pA
- Input Offset Current(Ios)
- 0.5pA
- Input Offset Voltage Drift(Vos TC)
- 50uV/℃
- Input Voltage Noise Density
- 46nV/√Hz@1kHz
- Number of Channels
- Single-channel
- Operating Temperature
- -55℃~+125℃
- Quiescent Current(Iq)
- 415uA
- Rail to Rail
- Rail-to-rail output
- Settling time
- 1.7us
- Single Supply
- 2.5V~5.5V
- Slew Rate
- 5V/us
- Voltage Gain
- 5V/V~1000V/V
- Vos - Input Offset Voltage
- 250uV
Order codes
1- INA331IDGKRLCSC C2863664
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | RG | Unspecified |
| 2 | VIN- | Unspecified |
| 3 | VIN+ | Unspecified |
| 4 | V- | Unspecified |
| 5 | REF | Unspecified |
| 6 | VOUT | Unspecified |
| 7 | V+ | Unspecified |
| 8 | Shutdown | Unspecified |
Open-source boards using it
All 1- 4 layers15 × 11 mm

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Is there a KiCad symbol and footprint for the INA331IDGKR?
Yes. The symbol is EasyEDA_Cloud:INA321EA_2K5 and the footprint Package_SO:VSSOP-8_3x3mm_P0.65mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the INA331IDGKR?
VSSOP-8, with 8 pins. Its footprint is drawn on this page.
Where is the INA331IDGKR datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the INA331IDGKR?
JLCPCB lists it as part C2863664, with 189 in stock; the sellers' links on this page open their listings.
What can replace the INA331IDGKR?
Parts like it in the library: the INA332AIDGKR by Texas Instruments, the INA326EA/2K5 by Texas Instruments, the INA331AIDGKT by Texas Instruments and the INA126EA/2K5 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the INA331IDGKR?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
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