Overview
The INA213BIDCKR is a high-precision, bi-directional current sense amplifier produced by Texas Instruments. It is part of the INA21x series, which includes voltage-output, current-shunt monitors designed for various applications such as overcurrent protection, precision current measurement, and closed-loop feedback circuits. The INA213 operates from a single 2.7-V to 26-V power supply and is available in SOT-SC70 (DCK) and Thin UQFN packages. This device features a zero-drift architecture, enabling accurate current sensing with low offset voltages and high precision over a wide temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain | 50 V/V | |
| Offset Voltage | ±35 µV (Maximum) | µV |
| Gain Error (Maximum Over Temperature) | ±1% (Versions A and B), ±0.5% (Version C) | % |
| Offset Drift | 0.5 µV/°C (Maximum) | µV/°C |
| Gain Drift | 10 ppm/°C (Maximum) | ppm/°C |
| Common-Mode Input Range | –0.3 V to 26 V | V |
| Quiescent Current | 100 µA (Maximum) | µA |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Type | SOT-SC70 (DCK), Thin UQFN |
Key Features
- High Precision: Low offset voltage of ±35 µV and low gain error, making it suitable for precise current measurements.
- Wide Common-Mode Range: Operates over a common-mode input range of –0.3 V to 26 V, independent of the supply voltage.
- Zero-Drift Architecture: Enables high-precision measurements with minimal temperature drift (0.5 µV/°C).
- Low Power Consumption: Draws a maximum of 100 µA of supply current.
- Compact Packaging: Available in SOT-SC70 (DCK) and Thin UQFN packages.
- Bi-Directional Sensing: Capable of sensing current in both directions.
Applications
- Notebook Computers: For power management and current monitoring.
- Cell Phones: For battery management and power optimization.
- Telecom Equipment: For monitoring and controlling current in various telecom systems.
- Power Management: In DC-DC converters, battery chargers, and other power management systems.
- Battery Chargers: For accurate current measurement and overcurrent protection.
Q & A
- What is the gain of the INA213BIDCKR?
The gain of the INA213BIDCKR is 50 V/V.
- What is the offset voltage of the INA213BIDCKR?
The offset voltage is ±35 µV (Maximum).
- What is the operating temperature range of the INA213BIDCKR?
The operating temperature range is –40°C to +125°C.
- What is the quiescent current of the INA213BIDCKR?
The quiescent current is 100 µA (Maximum).
- What are the available package types for the INA213BIDCKR?
The available package types are SOT-SC70 (DCK) and Thin UQFN.
- What is the common-mode input range of the INA213BIDCKR?
The common-mode input range is –0.3 V to 26 V.
- Can the INA213BIDCKR sense current in both directions?
- What are some typical applications of the INA213BIDCKR?
Typical applications include notebook computers, cell phones, telecom equipment, power management systems, and battery chargers.
- How does the zero-drift architecture benefit the INA213BIDCKR?
The zero-drift architecture enables high-precision measurements with minimal temperature drift, making it ideal for accurate current sensing.
- What is the maximum gain error over temperature for the INA213BIDCKR?
The maximum gain error over temperature is ±1% for Versions A and B, and ±0.5% for Version C.
