Overview
The NCS2252SN2T1G is a high-speed, low-voltage comparator from onsemi, designed for applications requiring fast response times and low power consumption. This device is part of the NCS2252 series, which features rail-to-rail input and output capabilities. The NCS2252SN2T1G is specifically packaged in a TSOP-5 (SOT23-5) package, making it suitable for space-constrained designs. It is also available in an automotive-qualified version denoted by the NCV prefix, ensuring compliance with AEC-Q100 standards.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage Range | VS | 1.8 | 5.5 | V | |
| Input Voltage Range | VIN | VSS - 0.3 | VDD + 0.3 | V | |
| Input Common Mode Voltage Range | VCM | VSS - 0.2 | VDD + 0.2 | V | |
| Propagation Delay (VOD = 100 mV) | tpLH, tpHL | 50 | 64 | ns | |
| Quiescent Supply Current (No Load) | IDD | 145 | 200 | 250 | μA |
| Input Offset Voltage | VOS | 0.5 | 6 | 6 | mV |
| Input Bias Current | IIB | 20 | 1000 | pA | |
| Output Voltage High (IOUT = 4 mA) | VOH | VDD - 0.14 | VDD - 0.3 | V | |
| Output Voltage Low (IOUT = 4 mA) | VOL | VSS + 0.12 | VSS + 0.3 | V | |
| Output Leakage Current | ILEAK | 1 | nA | ||
| Ambient Temperature Range | TA | -40 | 125 | °C |
Key Features
- High-Speed Operation: Propagation delay of 50 ns with a 100 mV overdrive, making it suitable for applications requiring fast response times.
- Rail-to-Rail Input and Output: Input common mode voltage range extends 200 mV beyond the supply rails, allowing voltage sensing at ground or at the supply voltage.
- Low Power Consumption: Typical quiescent supply current of 200 μA at 5 V supply.
- Open Drain Output: The NCS2252 has an open drain output stage, allowing the output to be connected through a pull-up resistor to another supply voltage for level translation or level shifting.
- Automotive Qualified: Available with the NCV prefix, which denotes AEC-Q100 qualification and PPAP capability.
- Compact Packaging: Available in TSOP-5 (SOT23-5) and SC-88A (SC70-5) packages.
Applications
- Automotive Systems: Suitable for various automotive applications due to its AEC-Q100 qualification.
- Industrial Control Systems: Used in industrial control systems where fast and reliable voltage comparisons are necessary.
- Medical Devices: Applicable in medical devices that require low power consumption and high-speed operation.
- Consumer Electronics: Found in consumer electronics such as battery management systems, voltage monitoring circuits, and other applications requiring fast and accurate voltage comparisons.
Q & A
- What is the propagation delay of the NCS2252SN2T1G?
The propagation delay of the NCS2252SN2T1G is 50 ns with a 100 mV overdrive.
- What is the input common mode voltage range of the NCS2252SN2T1G?
The input common mode voltage range extends 200 mV beyond the supply rails, from VSS - 0.2 V to VDD + 0.2 V.
- What type of output stage does the NCS2252SN2T1G have?
The NCS2252SN2T1G has an open drain output stage.
- What is the typical quiescent supply current of the NCS2252SN2T1G at 5 V supply?
The typical quiescent supply current is 200 μA at 5 V supply.
- Is the NCS2252SN2T1G automotive qualified?
Yes, it is available with the NCV prefix, which denotes AEC-Q100 qualification and PPAP capability.
- In what packages is the NCS2252SN2T1G available?
The NCS2252SN2T1G is available in TSOP-5 (SOT23-5) and SC-88A (SC70-5) packages.
- What is the ambient temperature range for the NCS2252SN2T1G?
The ambient temperature range is from -40°C to 125°C.
- How does the open drain output of the NCS2252SN2T1G work?
The open drain output requires an external pull-up resistor to provide sourcing current, and the timing of the output low-to-high transition is determined by the RC time constant of the pull-up resistor and the load capacitance.
- Why is hysteresis sometimes necessary in the NCS2252SN2T1G?
Hysteresis is necessary to prevent noise-induced switching behavior at the output, which can cause sustained output oscillations and increased supply current.
- How can hysteresis be added to the NCS2252SN2T1G circuit?
Hysteresis can be added by incorporating an external resistor network, which can be configured in either an inverting or non-inverting setup.
