Overview
The INA199A1RSWT is a part of the INA199 series of voltage-output, current-shunt monitors produced by Texas Instruments. These devices are designed for precision current measurement and are commonly used in applications such as overcurrent protection, system optimization, and closed-loop feedback circuits. The INA199 series can sense drops across shunt resistors at common-mode voltages ranging from –0.3 V to 26 V, independent of the supply voltage. This versatility makes them highly suitable for a wide range of industrial and automotive applications.
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 Type | 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 operation in a variety of voltage environments.
- Zero-Drift Architecture: Ensures high accuracy with a low offset voltage of ±150 μV, enabling current sensing with drops as low as 10-mV full-scale.
- Multiple Gain Options: Available in gains of 50 V/V, 100 V/V, and 200 V/V to accommodate different application requirements.
- Low Power Consumption: Operates with a quiescent current of up to 100 μA.
- High Temperature Range: Specified from –40°C to 125°C, making it suitable for harsh environments.
- Compact Packaging: Available in 6-Pin SC70 and 10-Pin UQFN packages.
Applications
- Overcurrent Protection: Used to detect and prevent overcurrent conditions in various systems.
- Precision Current Measurement: Ideal for accurate current sensing in industrial and automotive systems.
- System Optimization: Helps in optimizing system performance by providing precise current feedback.
- Closed-Loop Feedback Circuits: Utilized in control loops to maintain stable and efficient operation.
Q & A
- What is the common-mode voltage range of the INA199A1RSWT?
The common-mode voltage range is from –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 INA199A1RSWT?
The maximum offset voltage is ±150 μV. - What is the operating temperature range of the INA199A1RSWT?
The operating temperature range is from –40°C to 125°C. - What is the quiescent current of the INA199A1RSWT?
The quiescent current is up to 100 μA. - In what packages is the INA199A1RSWT available?
The INA199A1RSWT is available in a 10-Pin UQFN package. - What is the bandwidth of the INA199x1, INA199x2, and INA199x3?
The bandwidth is 80 kHz for INA199x1, 30 kHz for INA199x2, and 14 kHz for INA199x3 with a CLOAD of 10 pF. - What is the slew rate of the INA199A1RSWT?
The slew rate is 0.4 V/μs. - What is the voltage noise density of the INA199A1RSWT?
The voltage noise density is 25 nV/√Hz. - What are some common applications of the INA199A1RSWT?
Common applications include overcurrent protection, precision current measurement, system optimization, and closed-loop feedback circuits.
