Overview
The INA214AIDCKT is a high-precision, bi-directional current sense amplifier produced by Texas Instruments. It is part of the INA21x series, which are voltage-output, current-shunt monitors designed for precision current measurement and overcurrent protection. These devices can sense drops across shunts at common-mode voltages ranging from –0.3 V to 26 V, independent of the supply voltage. The INA214AIDCKT operates from a single 2.7-V to 26-V power supply and is available in a SOT-SC70 (DCK) package with 6 pins.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-SC70 (DCK) | - |
| Pins | 6 | - |
| Operating Temperature Range | –40 to 125 | °C |
| Common-Mode Input Range | –0.3 to 26 | V |
| Offset Voltage | ±1 to ±60 µV | µV |
| Gain | 100 V/V | V/V |
| 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 (Maximum) | µA |
| Operating Voltage Range | 2.7 to 26 | 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 for measurement across a broad range of voltages.
- High Precision: Low offset voltage (±1 to ±60 µV) and low drift (0.5 µV/°C), enabling accurate current sensing with shunt drops as low as 10-mV full-scale.
- Zero-Drift Topology: Ensures high-precision measurements over the full temperature range of –40°C to +125°C.
- Single Supply Operation: Operates from a single 2.7-V to 26-V power supply, drawing a maximum of 100 µA of supply current.
- Compact Packaging: Available in SC70 and Thin UQFN packages.
- High Gain Accuracy: Gain error of ±1% (Versions A and B) and ±0.5% (Version C) over temperature.
Applications
- Notebook Computers: For power management and current monitoring.
- Cell Phones: For battery management and power optimization.
- Telecom Equipment: For monitoring and controlling power supplies.
- Power Management: In various power supply and battery charger applications.
- Battery Chargers: For precise current measurement and overcurrent protection).
Q & A
- What is the operating temperature range of the INA214AIDCKT?
The operating temperature range is –40°C to +125°C.
- What is the common-mode input range of the INA214AIDCKT?
The common-mode input range is –0.3 V to 26 V.
- What is the gain of the INA214AIDCKT?
The gain of the INA214AIDCKT is 100 V/V.
- What is the maximum quiescent current of the INA214AIDCKT?
The maximum quiescent current is 100 µA.
- What are the available packages for the INA214AIDCKT?
The INA214AIDCKT is available in SC70 and Thin UQFN packages.
- What is the bandwidth of the INA214AIDCKT with a 10 pF load capacitance?
The bandwidth is 30 kHz with a 10 pF load capacitance.
- What is the slew rate of the INA214AIDCKT?
The slew rate is 0.4 V/µs.
- What are some typical applications of the INA214AIDCKT?
Typical applications include notebook computers, cell phones, telecom equipment, power management, and battery chargers.
- What is the offset voltage of the INA214AIDCKT?
The offset voltage is ±1 to ±60 µV.
- How does the zero-drift topology benefit the INA214AIDCKT?
The zero-drift topology ensures high-precision measurements with low offset voltage and drift over the full temperature range.
