Overview
The NCS199A2RSQT2G is a voltage output, current-shunt monitor (also known as a current sense amplifier) produced by onsemi. This device is part of the NCS199AxR series, which includes the NCS199A1R, NCS199A2R, and NCS199A3R models. It is designed to measure voltage across shunts at common-mode voltages ranging from -0.3 V to 26 V, independent of the supply voltage. The NCS199A2RSQT2G operates from a single power supply of +2.2 V to +26 V and is specified over an extended operating temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Supply Voltage Range | VS | 2.2 to 26 | V |
| Common Mode Input Voltage Range | VCM | -0.3 to 26 | V |
| Offset Voltage | VOS | ±150 μV max | μV |
| Offset Drift | dVOS/dT | 0.5 μV/°C max | μV/°C |
| Gain | G | 100 V/V | V/V |
| Gain Error | EG | ±1.5% max | % |
| Gain Error Drift | EG vs Temperature | 10 ppm/°C | ppm/°C |
| Quiescent Current | IQ | 40 μA typ, 80 μA max | μA |
| Maximum Junction Temperature | TJ(max) | +150 °C | °C |
| Storage Temperature Range | TSTG | -65 to +150 °C | °C |
| Package | SC70-6 |
Key Features
- Wide Common Mode Input Range: -0.3 V to 26 V
- Low Offset Voltage: ±150 μV max
- Low Offset Drift: 0.5 μV/°C max
- Low Gain Error: ±1.5% max
- Low Gain Error Drift: 10 ppm/°C
- Rail-to-Rail Output Capability
- Low Current Consumption: 40 μA typ, 80 μA max
- Extended Operating Temperature Range: -40°C to +125°C
Applications
- Current Sensing (High-Side/Low-Side)
- Telecom
- Power Management
- Battery Charging and Discharging
Q & A
- What is the operating voltage range of the NCS199A2RSQT2G?
The NCS199A2RSQT2G operates from a single power supply of +2.2 V to +26 V.
- What is the common mode input voltage range of the NCS199A2RSQT2G?
The common mode input voltage range is from -0.3 V to 26 V.
- What is the gain of the NCS199A2RSQT2G?
The gain of the NCS199A2RSQT2G is 100 V/V.
- What is the quiescent current of the NCS199A2RSQT2G?
The quiescent current is 40 μA typical and 80 μA maximum.
- What is the maximum junction temperature of the NCS199A2RSQT2G?
The maximum junction temperature is +150 °C.
- What package is the NCS199A2RSQT2G available in?
The NCS199A2RSQT2G is available in the SC70-6 package.
- What are the typical applications of the NCS199A2RSQT2G?
Typical applications include current sensing (high-side/low-side), telecom, power management, and battery charging and discharging.
- How does the NCS199A2RSQT2G handle offset voltage and drift?
The device has a low offset voltage of ±150 μV max and a low offset drift of 0.5 μV/°C max.
- Can the NCS199A2RSQT2G be used for bidirectional current sensing?
Yes, the NCS199A2RSQT2G can be configured for both low-side and high-side current sensing and supports bidirectional current sensing.
- What is the thermal resistance of the NCS199A2RSQT2G in the SC70-6 package?
The thermal resistance, junction-to-air, is 250 °C/W.
