Overview
The INA210AIDCKT from Texas Instruments is a high-precision, bi-directional current sense amplifier designed for accurate current measurement in various applications. This device is part of the INA21x series, which features a zero-drift topology, enabling high-precision measurements with minimal offset voltage. The INA210AIDCKT operates from a single 2.7-V to 26-V power supply and is available in a SOT-SC70 (DCK) package with 6 pins. It is widely used for overcurrent protection, precision current measurement, and in closed-loop feedback circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-SC70 (DCK) | |
| Pins | 6 | |
| Operating Temperature Range | –40°C to 125°C | °C |
| Supply Voltage Range | 2.7 V to 26 V | V |
| Common-Mode Input Range | –0.3 V to 26 V | V |
| Offset Voltage (Maximum) | ±35 µV | µV |
| Gain Error (Maximum Over Temperature) | ±1% (Versions A and B), ±0.5% (Version C) | % |
| Offset Drift (Maximum) | 0.5 µV/°C | µV/°C |
| Gain Drift (Maximum) | 10 ppm/°C | ppm/°C |
| Gain | 200 V/V | V/V |
| Quiescent Current (Maximum) | 100 µA | µA |
Key Features
- High Precision: The INA210AIDCKT features a zero-drift topology, ensuring high-precision current measurements with a maximum offset voltage of ±35 µV and a maximum offset drift of 0.5 µV/°C.
- Wide Common-Mode Range: It can sense drops across shunts at common-mode voltages from –0.3 V to 26 V, independent of the supply voltage.
- Flexible Gain Options: The INA21x series offers various fixed gains: 50 V/V, 75 V/V, 100 V/V, 200 V/V, 500 V/V, and 1000 V/V, with the INA210AIDCKT specifically offering a gain of 200 V/V.
- Low Power Consumption: The device operates with a maximum quiescent current of 100 µA, making it power-efficient.
- Compact Packaging: Available in SC70 and Thin UQFN packages, making it suitable for space-constrained designs.
Applications
- Notebook Computers: For power management and current sensing in portable devices.
- Cell Phones: For battery management and overcurrent protection.
- Telecom Equipment: For monitoring and controlling current in telecommunications systems.
- Power Management: For precision current measurement and overcurrent protection in power supplies and battery chargers.
- Battery Chargers: For accurate current sensing and control in battery charging applications.
Q & A
- What is the operating temperature range of the INA210AIDCKT?
The operating temperature range is –40°C to 125°C.
- What is the supply voltage range for the INA210AIDCKT?
The supply voltage range is 2.7 V to 26 V.
- What is the common-mode input range of the INA210AIDCKT?
The common-mode input range is –0.3 V to 26 V.
- What is the maximum offset voltage of the INA210AIDCKT?
The maximum offset voltage is ±35 µV.
- What are the gain options available in the INA21x series?
The INA21x series offers gains of 50 V/V, 75 V/V, 100 V/V, 200 V/V, 500 V/V, and 1000 V/V, with the INA210AIDCKT having a gain of 200 V/V.
- What is the maximum quiescent current of the INA210AIDCKT?
The maximum quiescent current is 100 µA.
- In what packages is the INA210AIDCKT available?
The INA210AIDCKT is available in SC70 and Thin UQFN packages.
- What are some common applications of the INA210AIDCKT?
Common applications include notebook computers, cell phones, telecom equipment, power management, and battery chargers.
- How does the zero-drift topology benefit the INA210AIDCKT?
The zero-drift topology ensures high-precision measurements with minimal offset voltage and drift, making it suitable for accurate current sensing.
- What is the significance of the low offset voltage in the INA210AIDCKT?
The low offset voltage allows for accurate current sensing with shunt drops as low as 10 mV full-scale, reducing shunt dissipation significantly.
