Overview
The INA181A3IDBVR is a bidirectional current-sense amplifier produced by Texas Instruments. It is part of the INAx181 family, designed for cost-optimized applications. This device is capable of sensing voltage drops across current-sense resistors at common-mode voltages ranging from –0.2 V to +26 V, independent of the supply voltage. The INA181A3IDBVR operates from a single 2.7-V to 5.5-V power supply and is available in a 6-pin SOT-23 package, making it suitable for a variety of current-sensing applications.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOT-23 (DBV) |
| Pin Count | 6 |
| Operating Temperature Range | –40°C to +125°C |
| Power Supply Type | Single |
| Typical Single Supply Voltage | 2.7 V to 5.5 V |
| Number of Channels per Chip | 1 |
| Output Type | Voltage |
| Common-Mode Range (VCM) | –0.2 V to +26 V |
| Bandwidth | 350 kHz (A1 devices) |
| Offset Voltage | ±150 µV (maximum) at VCM = 0 V, ±500 µV (maximum) at VCM = 12 V |
| Output Slew Rate | 2 V/µs |
| Gain Error | ±1% (maximum) |
| Gain Options | 20 V/V, 50 V/V, 100 V/V, 200 V/V (INA181A3IDBVR: 100 V/V) |
| Quiescent Current | 260 µA (maximum) |
| Minimum CMRR | 100 dB |
Key Features
- Bidirectional current-sensing capability
- High bandwidth: 350 kHz
- Low offset voltage: ±150 µV (maximum) at VCM = 0 V, ±500 µV (maximum) at VCM = 12 V
- High accuracy: ±1% gain error (maximum), 1-µV/°C offset drift (maximum)
- Integrated matched resistor gain network
- Low quiescent current: 260 µA (maximum)
- High common-mode rejection ratio (CMRR): 100 dB
Applications
The INA181A3IDBVR is suitable for various applications requiring precise current sensing, such as:
- Automotive systems
- Industrial control systems
- Power management systems
- Motor control and monitoring
- Battery management systems
Q & A
- What is the package type of the INA181A3IDBVR?
The INA181A3IDBVR is packaged in a 6-pin SOT-23 (DBV) package. - What is the operating temperature range of the INA181A3IDBVR?
The operating temperature range is –40°C to +125°C. - What is the typical single supply voltage for the INA181A3IDBVR?
The typical single supply voltage is 2.7 V to 5.5 V. - How many channels does the INA181A3IDBVR have?
The INA181A3IDBVR has one channel. - What is the output type of the INA181A3IDBVR?
The output type is voltage. - What is the common-mode range of the INA181A3IDBVR?
The common-mode range is –0.2 V to +26 V. - What is the bandwidth of the INA181A3IDBVR?
The bandwidth is 350 kHz for A1 devices. - What is the gain option for the INA181A3IDBVR?
The gain option for the INA181A3IDBVR is 100 V/V. - What is the quiescent current of the INA181A3IDBVR?
The quiescent current is 260 µA (maximum). - What is the minimum CMRR of the INA181A3IDBVR?
The minimum CMRR is 100 dB.
