Overview
The NCS214RSQT2G, produced by onsemi, is a voltage output, current sense amplifier designed for precise current sensing across a wide range of common-mode voltages. This device is part of the NCS214R and NCV214R series, with the NCV prefix indicating AEC-Q100 qualification for automotive and other high-reliability applications. It operates from a single +2.2 V to +26 V power supply, drawing a maximum of 80 µA of supply current, and is specified over an extended operating temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VS | 2.2 | 26 | V | |
| Common-Mode Input Voltage Range | VCM | -0.3 | 26 | V | |
| Gain | G | 100 | V/V | ||
| Gain Error Max | EG | ±1 | % | ||
| Input Offset Voltage | VOS | ±1 | ±60 | µV | |
| Input Offset Voltage Drift | dVOS/dT | 0.5 | µV/°C | ||
| Quiescent Current | IQ | 40 | 80 | µA | |
| Bandwidth (f-3dB) | BW | 60 | kHz | ||
| Operating Temperature Range | TA | -40 | 125 | °C | |
| Common-Mode Rejection Ratio | CMRR | 105 | 125 | dB |
Key Features
- Wide Common Mode Input Range: -0.3 V to 26 V, independent of supply voltage.
- Low Offset Voltage: ±100 µV max.
- Low Offset Drift: 0.5 µV/°C max.
- Single Supply Operation: +2.2 V to +26 V.
- Low Quiescent Current: Maximum of 80 µA.
- High Accuracy: Fixed gain of 100 V/V with low gain error.
- Extended Operating Temperature Range: -40°C to +125°C.
- Compact Packages: Available in SC70-6 and UQFN10 packages.
Applications
- Power Monitoring: For monitoring power consumption in various systems.
- Power Adapters and LED Power Supply: To ensure efficient and safe power delivery.
- Over Current Protection: In circuits requiring protection against excessive current.
- Automotive Systems: For current sensing in automotive applications, especially with AEC-Q100 qualified versions.
- Closed Loop Feedback Circuits: For precise control in feedback loops.
- White Goods and Consumer Electronics: In appliances and consumer electronics requiring current monitoring.
- Laptop/Notebooks and PC: For power management and monitoring.
- Fast Chargers in Smartphones and Tablets: To optimize charging efficiency and safety.
- Telecom DC-DC Modules: For current sensing in telecommunications equipment.
- E-Cigarettes and Computing Servers: For power monitoring and management.
Q & A
- What is the common-mode input voltage range of the NCS214RSQT2G?
The common-mode input voltage range is from -0.3 V to 26 V. - What is the gain of the NCS214RSQT2G?
The gain is fixed at 100 V/V. - What is the input offset voltage of the NCS214RSQT2G?
The input offset voltage is ±1 µV to ±60 µV. - What is the operating temperature range of the NCS214RSQT2G?
The operating temperature range is from -40°C to +125°C. - What is the quiescent current of the NCS214RSQT2G?
The quiescent current is a maximum of 80 µA. - What are the available packages for the NCS214RSQT2G?
The device is available in SC70-6 and UQFN10 packages. - What are some typical applications of the NCS214RSQT2G?
Typical applications include power monitoring, power adapters, over current protection, automotive systems, and more. - Is the NCS214RSQT2G suitable for automotive applications?
Yes, especially the NCV214RSQT2G which is AEC-Q100 qualified. - What is the bandwidth of the NCS214RSQT2G?
The bandwidth is typically 60 kHz. - How does the NCS214RSQT2G handle common-mode rejection?
The device has a common-mode rejection ratio (CMRR) of 105 dB to 125 dB.
