Overview
The INA2191A2IYBJR is a high-precision, bidirectional current sense amplifier manufactured by Texas Instruments. This component is designed for ultra-precise current measurement applications, offering exceptional accuracy and low power consumption. It is particularly suited for systems requiring microamp-level current measurements, such as battery monitoring, power management, and industrial automation. The INA2191A2IYBJR is available in a compact DSBGA package, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage (VS) | 1.7 to 5.5 | V | |
| Shutdown Current | 100 | nA | Max |
| Quiescent Current | 43 | μA | At 25°C |
| Input Bias Current | 100 | pA | Typical |
| Gain Error | ±0.25 | % | Max (A2 to A5 devices) |
| Gain Drift | 7 | ppm/°C | Max |
| Offset Voltage | ±12 | μV | Max |
| Offset Drift | 0.13 | μV/°C | Max |
| Common-Mode Voltage | -0.2 to +40 | V | |
| Gain | 50 | V/V | INAx191A2 |
Key Features
- Ultra-precise bidirectional current measurement.
- Low power consumption with a supply voltage range of 1.7 V to 5.5 V.
- Exceptional accuracy with a maximum gain error of ±0.25%.
- Low input bias current of 100 pA, enabling microamp-level current measurement.
- Wide common-mode voltage range from -0.2 V to +40 V.
Applications
The INA2191A2IYBJR is widely used in applications requiring precise current measurement and monitoring. Key application areas include:
- Battery Monitoring: Ensures accurate measurement of charge and discharge currents in battery-powered systems.
- Power Management: Provides precise current data for optimizing power usage in various electronic devices.
- Industrial Automation: Used in control systems to monitor and manage current flow in machinery and equipment.
- Consumer Electronics: Enables efficient power management in devices such as smartphones, tablets, and laptops.
Q & A
1. What is the supply voltage range for the INA2191A2IYBJR?
The supply voltage range is 1.7 V to 5.5 V.
2. What is the typical input bias current?
The typical input bias current is 100 pA.
3. What is the maximum gain error?
The maximum gain error is ±0.25%.
4. What is the common-mode voltage range?
The common-mode voltage range is -0.2 V to +40 V.
5. What is the gain of the INA2191A2IYBJR?
The gain is 50 V/V.
6. What is the shutdown current?
The shutdown current is 100 nA (max).
7. What is the quiescent current at 25°C?
The quiescent current is 43 μA at 25°C.
8. What is the maximum offset voltage?
The maximum offset voltage is ±12 μV.
9. What is the maximum offset drift?
The maximum offset drift is 0.13 μV/°C.
10. What package is the INA2191A2IYBJR available in?
It is available in a DSBGA package.
