Overview
The INA214AIDCKR 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. This device operates from a single 2.7-V to 26-V power supply and is available in a SOT-SC70 (DCK) package with 6 pins. The INA214AIDCKR is characterized by its wide common-mode range of –0.3 V to 26 V, enabling it to sense drops across shunts at various common-mode voltages independent of the supply voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-SC70 (DCK) | - |
| Pins | 6 | - |
| Operating Temperature Range | –40 to 125 | °C |
| Operating Voltage Range | 2.7 to 26 | V |
| Gain | 100 V/V | - |
| Offset Voltage | ±1 to ±60 µV | µV |
| Gain Error (Maximum Over Temperature) | ±1% (Versions A and B), ±0.5% (Version C) | % |
| Offset Drift | 0.5 µV/°C | µV/°C |
| Gain Drift | 10 ppm/°C | ppm/°C |
| Quiescent Current | 100 µA | µA |
| Common-Mode Input Range | –0.3 to 26 V | V |
| Bandwidth | 30 kHz (CLOAD = 10 pF) | kHz |
| Slew Rate | 0.4 V/µs | V/µs |
Key Features
- Wide Common-Mode Range: –0.3 V to 26 V, allowing sensing of drops across shunts at various common-mode voltages independent of the supply voltage.
- Low Offset Voltage: ±1 to ±60 µV, enabling current sensing with shunt drops as low as 10-mV full-scale.
- High Accuracy: Gain error of ±1% (Versions A and B) and ±0.5% (Version C) over temperature, with offset drift of 0.5 µV/°C and gain drift of 10 ppm/°C.
- Low Quiescent Current: Maximum of 100 µA, making it power-efficient.
- Compact Packaging: Available in SC70 and Thin UQFN packages.
- Wide Operating Temperature Range: Specified over –40°C to +125°C.
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 applications.
- Power Management: In power supplies, battery chargers, and other power management systems.
- Battery Chargers: For precise current measurement and overcurrent protection).
Q & A
- What is the operating voltage range of the INA214AIDCKR?
The INA214AIDCKR operates from a single 2.7-V to 26-V power supply.
- What is the gain of the INA214AIDCKR?
The gain of the INA214AIDCKR is 100 V/V.
- What is the common-mode input range of the INA214AIDCKR?
The common-mode input range is –0.3 V to 26 V.
- What is the maximum quiescent current of the INA214AIDCKR?
The maximum quiescent current is 100 µA.
- What is the operating temperature range of the INA214AIDCKR?
The specified operating temperature range is –40°C to +125°C.
- What are the typical applications of the INA214AIDCKR?
Typical applications include notebook computers, cell phones, telecom equipment, power management, and battery chargers.
- What is the offset voltage of the INA214AIDCKR?
The offset voltage is ±1 to ±60 µV.
- What is the bandwidth of the INA214AIDCKR?
The bandwidth is 30 kHz with a load capacitance of 10 pF.
- What is the slew rate of the INA214AIDCKR?
The slew rate is 0.4 V/µs.
- In what packages is the INA214AIDCKR available?
The INA214AIDCKR is available in SC70 and Thin UQFN packages.
