INA2191 in INA219 / INA226 Current Sensors Family
The INA2191 is a dual-channel, ultra-precise current sense amplifier family from Texas Instruments, designed for bi-directional current monitoring. Operating with a common-mode voltage range of -0.3V to 40V, it offers exceptional accuracy with an offset voltage of just 25 microvolts. This sub-family provides a low-power, high-density alternative to discrete amplifier setups, making it ideal for systems requiring simultaneous monitoring of multiple power rails in space-constrained environments.
Variants in This Sub-Family
| Part Number | Difference | Stock |
|---|---|---|
| INA2191A3IYBJR (Texas Instruments) | 3IYBJR | 892 |
Variants within the INA2191 sub-family differ primarily in their fixed gain settings, denoted by the alphanumeric suffix (e.g., A3 for 100V/V, A4 for 200V/V). This allows engineers to select the specific gain that best matches their shunt resistor value and expected current range to maximize dynamic range without needing external feedback components. All variants maintain the same 1.7V to 5.5V supply range and compact SC70 or DSBGA packaging.
