Overview
The NCS199A3RSQT2G is a high-precision current-shunt monitor produced by onsemi. This device is part of the NCS199AxR series, which includes voltage output, current-shunt monitors designed for accurate and reliable current sensing. The NCS199A3RSQT2G operates with a wide common-mode input range and is suitable for both high-side and low-side current sensing applications. It features a zero-drift architecture, ensuring low offset voltage and high accuracy over a broad temperature range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.2 to 26 | V |
| Operating Supply Current | 40 (typ), 80 (max) | μA |
| Minimum Operating Temperature | -40 | °C |
| Maximum Operating Temperature | 125 | °C |
| Common Mode Input Voltage Range | -0.3 to 26 | V |
| Offset Voltage | ±150 μV (max) | μV |
| Offset Drift | 0.5 μV/°C (max) | μV/°C |
| Gain | 200 V/V | V/V |
| Gain Error | ±1.5% (max) | % |
| Gain Error Drift | 10 ppm/°C (max) | ppm/°C |
| Bandwidth (f-3dB) | 40 kHz | kHz |
| Package Type | SC70-6 |
Key Features
- Wide Common Mode Input Range: -0.3 V to 26 V, independent of supply voltage.
- Low Offset Voltage: ±150 μV max, ensuring high accuracy in current sensing.
- Low Offset Drift: 0.5 μV/°C max, maintaining precision over a broad temperature range.
- Low Gain Error: ±1.5% max, and low gain error drift of 10 ppm/°C.
- Rail-to-Rail Output Capability: Output voltage can swing from near ground to within 200 mV of the supply voltage.
- Low Current Consumption: Typical quiescent current of 40 μA, maximum of 80 μA.
- High Common Mode Rejection Ratio (CMRR): 100 dB typ, ensuring robust performance in noisy environments.
Applications
- Current Sensing (High-Side/Low-Side): Ideal for monitoring current in various power management systems.
- Telecom: Used in telecommunications equipment for accurate current monitoring.
- Power Management: Suitable for power supply monitoring and control in various electronic systems.
- Battery Charging and Discharging: Accurate current sensing during battery charging and discharging cycles.
Q & A
- What is the supply voltage range of the NCS199A3RSQT2G?
The supply voltage range is from 2.2 V to 26 V.
- What is the typical operating supply current of the NCS199A3RSQT2G?
The typical operating supply current is 40 μA, with a maximum of 80 μA.
- What is the common mode input voltage range of the NCS199A3RSQT2G?
The common mode input voltage range is from -0.3 V to 26 V.
- What is the gain of the NCS199A3RSQT2G?
The gain is 200 V/V.
- What is the maximum offset voltage of the NCS199A3RSQT2G?
The maximum offset voltage is ±150 μV.
- What is the bandwidth (f-3dB) of the NCS199A3RSQT2G?
The bandwidth is 40 kHz.
- In what package type is the NCS199A3RSQT2G available?
The device is available in the SC70-6 package.
- What are the typical applications of the NCS199A3RSQT2G?
Typical applications include current sensing, telecom, power management, and battery charging and discharging.
- How does the NCS199A3RSQT2G handle temperature variations?
The device is specified over an extended operating temperature range of -40°C to +125°C, with low offset drift and gain error drift.
- Can the NCS199A3RSQT2G be powered from the same supply it is monitoring?
Yes, but for detecting short circuit current, a separate power supply may be necessary.
