Overview
The INA213CIDCKR is a current-sensing amplifier from Texas Instruments, part of the INA21x series. These amplifiers are designed for high-precision current measurement and feature a zero-drift topology, enabling accurate measurements across a wide range of common-mode voltages. The INA213 can operate with supply voltages as low as 2.7 V and can measure currents on input voltage rails up to 26 V. This device is particularly useful in applications requiring low offset voltages and high accuracy over a wide temperature range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain | 50 | V/V |
| Offset Voltage (Maximum) | ±100 µV | µV |
| Offset Drift vs Temperature | 0.5 µV/°C | µV/°C |
| Gain Error (Maximum Over Temperature) | ±1% (Versions A and B), ±0.5% (Version C) | % |
| Common-Mode Input Range | –0.3 V to 26 V | V |
| Operating Voltage Range | 2.7 V to 26 V | V |
| Quiescent Current (Maximum) | 100 µA | µA |
| Bandwidth (CLOAD = 10 pF) | 80 kHz | kHz |
| Slew Rate | 0.4 V/µs | V/µs |
| Temperature Range | –40°C to +125°C | °C |
| Package | SC70, Thin UQFN |
Key Features
- Zero-Drift Topology: Enables high-precision measurements with low offset voltages and minimal temperature drift.
- Wide Common-Mode Range: Can measure currents on input voltage rails up to 26 V while being powered from supply voltages as low as 2.7 V.
- Low Offset Voltage: Maximum input offset voltage of ±100 µV and a maximum temperature contribution of 0.5 µV/°C.
- High Accuracy: Gain error as low as ±0.5% over the full temperature range.
- Compact Packages: Available in SC70 and Thin UQFN packages.
- Low Quiescent Current: Maximum quiescent current of 100 µA.
Applications
- Notebook Computers: For power management and battery charging systems.
- Cell Phones: For efficient current sensing in power management circuits.
- Telecom Equipment: For monitoring and controlling current in various telecom applications.
- Power Management: In DC-DC converters, power supplies, and other power management systems.
- Battery Chargers: For accurate current measurement and control in battery charging circuits.
Q & A
- What is the gain of the INA213?
The gain of the INA213 is 50 V/V.
- What is the maximum offset voltage of the INA213?
The maximum offset voltage of the INA213 is ±100 µV.
- What is the operating voltage range of the INA213?
The operating voltage range of the INA213 is from 2.7 V to 26 V.
- What is the quiescent current of the INA213?
The maximum quiescent current of the INA213 is 100 µA.
- What are the common package types for the INA213?
The INA213 is available in SC70 and Thin UQFN packages.
- What is the bandwidth of the INA213 with a 10 pF load capacitance?
The bandwidth of the INA213 with a 10 pF load capacitance is 80 kHz.
- What is the slew rate of the INA213?
The slew rate of the INA213 is 0.4 V/µs.
- What is the temperature range for the INA213?
The specified temperature range for the INA213 is –40°C to +125°C.
- What are some typical applications of the INA213?
The INA213 is typically used in notebook computers, cell phones, telecom equipment, power management systems, and battery chargers.
- How does the zero-drift topology benefit the INA213?
The zero-drift topology of the INA213 enables high-precision measurements with minimal offset voltage and temperature drift, making it highly accurate over a wide temperature range.
