Overview
The INA199A1RSWR, produced by Texas Instruments, is a 26-V, bidirectional, zero-drift, voltage-output current-shunt monitor. This device is designed for high-precision current sensing and can be used in both low-side and high-side configurations. It features a wide common-mode range of –0.3 V to 26 V, making it suitable for measuring currents in various voltage rails. The zero-drift topology ensures high accuracy with a maximum input offset voltage of ±150 µV and a temperature drift of 0.5 µV/°C over the full temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage Range | 2.7 V to 26 V |
| Common-Mode Range | –0.3 V to 26 V |
| Offset Voltage (Maximum) | ±150 µV |
| Gain Options | 50 V/V, 100 V/V, 200 V/V |
| Gain Error (Maximum Over Temperature) | ±1% (C Version), ±1.5% (A and B Versions) |
| Offset Drift (Maximum) | 0.5 µV/°C |
| Gain Drift (Maximum) | 10 ppm/°C |
| Quiescent Current (Maximum) | 100 µA |
| Operating Temperature Range | –40°C to 125°C |
| Package Types | 6-Pin SC70, 10-Pin UQFN |
| Bandwidth (CLOAD = 10 pF) | 80 kHz (INA199x1), 30 kHz (INA199x2), 14 kHz (INA199x3) |
| Slew Rate | 0.4 V/µs |
| Voltage Noise Density | 25 nV/√Hz |
Key Features
- Wide Common-Mode Range: –0.3 V to 26 V, allowing for current sensing in high-voltage applications.
- Zero-Drift Topology: Ensures high precision with a maximum input offset voltage of ±150 µV and a temperature drift of 0.5 µV/°C.
- Multiple Gain Options: Available in gains of 50 V/V, 100 V/V, and 200 V/V to suit various application requirements.
- Low Quiescent Current: Maximum of 100 µA, making it power-efficient.
- High Accuracy: Gain error of ±1% (C Version) and ±1.5% (A and B Versions) over temperature.
- Compact Packaging: Available in 6-Pin SC70 and 10-Pin UQFN packages.
Applications
- Overcurrent Protection: Used to monitor and protect against excessive current in various systems.
- Precision Current Measurement: Ideal for system optimization and monitoring current in high-precision applications.
- Closed-Loop Feedback Circuits: Utilized in feedback loops to maintain precise control over current levels.
Q & A
- What is the common-mode range of the INA199A1RSWR?
The common-mode range is –0.3 V to 26 V.
- What are the available gain options for the INA199 series?
The gain options are 50 V/V, 100 V/V, and 200 V/V.
- What is the maximum offset voltage of the INA199A1RSWR?
The maximum offset voltage is ±150 µV.
- What is the operating voltage range of the INA199A1RSWR?
The operating voltage range is 2.7 V to 26 V.
- What are the package types available for the INA199 series?
The package types are 6-Pin SC70 and 10-Pin UQFN.
- What is the maximum quiescent current of the INA199A1RSWR?
The maximum quiescent current is 100 µA.
- What is the temperature range for the INA199A1RSWR?
The operating temperature range is –40°C to 125°C.
- What are some common applications of the INA199 series?
Common applications include overcurrent protection, precision current measurement, and use in closed-loop feedback circuits.
- What is the slew rate of the INA199A1RSWR?
The slew rate is 0.4 V/µs.
- What is the voltage noise density of the INA199A1RSWR?
The voltage noise density is 25 nV/√Hz.
