Overview
The INA194AIDBVT is a high-accuracy current shunt monitor produced by Texas Instruments. This component is part of the INA193-INA198 family, designed for real-time system protection, feedback control, and high-accuracy system monitoring. It can sense voltage drops across shunts at common-mode voltages ranging from -16 V to +80 V, independent of the supply voltage. The INA194AIDBVT is particularly useful in applications requiring precise current and power measurement.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Brand | Texas Instruments | |
| Power Supply Type | Single | |
| Typical Single Supply Voltage | 2.7 V, 3 V, 5 V, 9 V, 12 V, 15 V | V |
| Minimum Operating Supply Voltage | 2.7 V | V |
| Maximum Operating Supply Voltage | 18 V | V |
| Minimum Operating Temperature | -40 °C | °C |
| Maximum Operating Temperature | +125 °C | °C |
| Number of Channels per Chip | 1 | |
| Mounting Type | Surface Mount | |
| Package Type | SOT-23 (DBV) | |
| Pin Count | 5 | |
| Dimensions | 2.9 x 1.6 x 1.15 mm | mm |
| Common-Mode Input Range | -16 V to +80 V | V |
| Common-Mode Rejection Ratio (CMRR) | 80 dB (minimum) | dB |
| Gain | 50 V/V | V/V |
| Bandwidth | Up to 500 kHz | kHz |
| Quiescent Current | 900 µA (maximum) | µA |
| Output Impedance | 1.5 Ω | Ω |
Key Features
- Wide Common-Mode Voltage Range: -16 V to +80 V, independent of the supply voltage.
- Low Error: Maximum error of 3.0% over temperature.
- High Bandwidth: Up to 500 kHz, simplifying use in current control loops.
- Multiple Gain Options: Available with three output voltage scales: 20 V/V, 50 V/V, and 100 V/V.
- Low Quiescent Current: Maximum of 900 µA.
- Compact Package: Space-saving SOT-23 package.
- High Accuracy: Suitable for high-accuracy system monitoring and real-time system protection.
Applications
- Welding Equipment: For precise current measurement and control.
- Notebook Computers: Power management and battery charging.
- Cell Phones: Battery management and power monitoring.
- Telecom Equipment: Current and power monitoring in communication systems.
- Automotive: For various automotive applications requiring current sensing.
- Power Management: In power supplies, DC-DC converters, and battery chargers.
Q & A
- What is the typical supply voltage range for the INA194AIDBVT?
The typical single supply voltage range is 2.7 V to 18 V, with specific typical voltages including 3 V, 5 V, 9 V, 12 V, and 15 V.
- What is the common-mode input range of the INA194AIDBVT?
The common-mode input range is from -16 V to +80 V.
- What is the gain of the INA194AIDBVT?
The gain of the INA194AIDBVT is 50 V/V.
- What is the bandwidth of the INA194AIDBVT?
The bandwidth is up to 500 kHz.
- What is the maximum operating temperature of the INA194AIDBVT?
The maximum operating temperature is +125 °C.
- What is the package type of the INA194AIDBVT?
The package type is SOT-23 (DBV) with 5 pins.
- What are some common applications of the INA194AIDBVT?
Common applications include welding equipment, notebook computers, cell phones, telecom equipment, automotive systems, and power management.
- What is the quiescent current of the INA194AIDBVT?
The maximum quiescent current is 900 µA.
- What is the output impedance of the INA194AIDBVT?
The output impedance is 1.5 Ω.
- What is the minimum common-mode rejection ratio (CMRR) of the INA194AIDBVT?
The minimum CMRR is 80 dB.
- How does the INA194AIDBVT handle capacitive loads?
The INA194AIDBVT can handle a maximum capacitive load of 10 nF without sustained oscillation.
