Overview
The INA180A4IDBVT is a single-channel, high-precision current-sense amplifier manufactured by Texas Instruments. It is part of the INAx180 family, which includes the INA180, INA2180, and INA4180. These devices are designed for cost-optimized applications and are 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 INA180A4IDBVT operates from a single 2.7-V to 5.5-V power supply and is available in a 5-pin SOT-23 package with two different pin configurations.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VS) | 2.7 to 5.5 | V |
| Common-Mode Range (VCM) | –0.2 to +26 | V |
| Bandwidth (A4 devices) | 105 kHz | kHz |
| Offset Voltage (maximum at VCM = 0 V) | ±150 µV | µV |
| Offset Voltage (maximum at VCM = 12 V) | ±500 µV | µV |
| Output Slew Rate | 2 V/µs | V/µs |
| Gain Error (maximum) | ±1% | % |
| Gain Option | 200 V/V (A4 devices) | V/V |
| Quiescent Current (maximum) | 260 µA | µA |
| Operating Temperature Range | –40 to +125 | °C |
| Package Type | SOT-23 (5 pins) |
Key Features
- High common-mode range: –0.2 V to +26 V, allowing for measurement in both low-side and high-side configurations.
- High bandwidth: Up to 350 kHz for A1 devices, with the A4 device offering 105 kHz.
- Low offset voltage: ±150 µV (maximum) at VCM = 0 V and ±500 µV (maximum) at VCM = 12 V.
- High accuracy: ±1% gain error (maximum) and 1-µV/°C offset drift (maximum).
- Fixed gain options: 20 V/V, 50 V/V, 100 V/V, and 200 V/V.
- Low quiescent current: Maximum of 260 µA.
- Wide operating temperature range: –40°C to +125°C.
- Compact packaging: Available in a 5-pin SOT-23 package.
Applications
- Motor control: For precise current measurement in motor control systems.
- Battery monitoring: To monitor battery health and state of charge.
- Power management: In power supply units and voltage regulators.
- Lighting control: For current sensing in lighting systems.
- Overcurrent detection: To protect against overcurrent conditions.
- Solar inverters: For monitoring current in solar power systems.
Q & A
- What is the common-mode range of the INA180A4IDBVT? The common-mode range is from –0.2 V to +26 V.
- What is the bandwidth of the INA180A4IDBVT? The bandwidth for A4 devices is 105 kHz.
- What are the gain options available for the INA180 series? 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 INA180A4IDBVT? The maximum quiescent current is 260 µA.
- What is the operating temperature range of the INA180A4IDBVT? The operating temperature range is from –40°C to +125°C.
- In what package is the INA180A4IDBVT available? It is available in a 5-pin SOT-23 package.
- What are some typical applications of the INA180A4IDBVT? Typical applications include motor control, battery monitoring, power management, lighting control, overcurrent detection, and solar inverters.
- What is the supply voltage range for the INA180A4IDBVT? The supply voltage range is from 2.7 V to 5.5 V.
- How does the INA180A4IDBVT minimize gain error and temperature drift? It integrates a matched resistor gain network which minimizes gain error and reduces temperature drift.
- What is the output slew rate of the INA180A4IDBVT? The output slew rate is 2 V/µs.
