Overview
The INA180A2IDBVT, produced by Texas Instruments, is a single-channel current-sense amplifier designed for cost-optimized applications. It is part of the INAx180 family, which includes the INA180, INA2180, and INA4180. These devices are used to sense voltage drops across current-sense resistors at common-mode voltages ranging from –0.2 V to +26 V, independent of the supply voltage. The INA180A2IDBVT operates from a single 2.7-V to 5.5-V power supply and is available in a 5-pin SOT-23 package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VS) | 2.7 to 5.5 | V |
| Common-Mode Range (VCM) | –0.2 to +26 | V |
| Bandwidth | 350 kHz (A1 devices) | kHz |
| Offset Voltage | ±150 µV (max) at VCM = 0 V, ±500 µV (max) at VCM = 12 V | µV |
| Output Slew Rate | 2 V/µs | V/µs |
| Gain Error | ±1% (max) | % |
| Gain Options | 20 V/V, 50 V/V, 100 V/V, 200 V/V | V/V |
| Quiescent Current | 260 µA (max) | µA |
| Operating Temperature Range | –40 to 125 | °C |
| Package Type | 5-pin SOT-23 (DBV) |
Key Features
- Common-mode range of –0.2 V to +26 V, allowing measurement of voltages across current-sense resistors at high common-mode voltages.
- High bandwidth of 350 kHz for accurate and fast current sensing.
- Low offset voltage: ±150 µV (max) at VCM = 0 V and ±500 µV (max) at VCM = 12 V.
- High output slew rate of 2 V/µs for rapid response to input changes.
- Accuracy with ±1% gain error (max) and 1-µV/°C offset drift (max).
- Four fixed-gain options: 20 V/V, 50 V/V, 100 V/V, and 200 V/V, integrated with a matched resistor gain network to minimize gain error and reduce temperature drift.
- Low quiescent current of 260 µA (max), making it power-efficient.
- Extended operating temperature range of –40 to 125 °C.
Applications
- Motor control: For monitoring and controlling motor currents in various applications.
- Battery monitoring: To measure battery currents and voltages accurately.
- Power management: In power supplies and power management systems to monitor current levels.
- Lighting control: For current sensing in lighting systems, especially in LED lighting.
- Overcurrent detection: To detect and prevent overcurrent conditions in various electronic systems.
- Solar inverters: For monitoring and controlling current in solar power systems.
Q & A
- What is the common-mode range of the INA180A2IDBVT?
The common-mode range is from –0.2 V to +26 V.
- What are the gain options available for the INA180A2IDBVT?
The gain options are 20 V/V, 50 V/V, 100 V/V, and 200 V/V.
- What is the maximum quiescent current of the INA180A2IDBVT?
The maximum quiescent current is 260 µA.
- What is the operating temperature range of the INA180A2IDBVT?
The operating temperature range is from –40 to 125 °C.
- What package type is the INA180A2IDBVT available in?
The INA180A2IDBVT is available in a 5-pin SOT-23 (DBV) package.
- What is the bandwidth of the INA180A2IDBVT?
The bandwidth is 350 kHz for A1 devices.
- What are some typical applications of the INA180A2IDBVT?
Typical applications include motor control, battery monitoring, power management, lighting control, overcurrent detection, and solar inverters.
- What is the output slew rate of the INA180A2IDBVT?
The output slew rate is 2 V/µs.
- How does the INA180A2IDBVT minimize gain error and temperature drift?
The device integrates a matched resistor gain network, which minimizes gain error and reduces temperature drift.
- What is the maximum offset voltage of the INA180A2IDBVT at VCM = 0 V and VCM = 12 V?
The maximum offset voltage is ±150 µV at VCM = 0 V and ±500 µV at VCM = 12 V.
