Overview
The LM393QT, produced by STMicroelectronics, is a low-power dual voltage comparator designed for a wide range of applications. This device consists of two independent comparators that can operate from either a single supply or split power supplies. The LM393QT is notable for its ability to operate with a common-mode input voltage range that includes ground, even when powered from a single supply voltage.
This component is part of the LM393 series, which is known for its precision and low offset voltage, making it suitable for various consumer, automotive, and industrial electronics applications.
Key Specifications
| Parameter | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Power Supply Voltage | VCC | 2 | 36 | V | |
| Input Differential Voltage | VIDR | 36 | V | ||
| Input Common Mode Voltage Range | VICR | -0.3 | 36 | V | |
| Input Offset Voltage | VIO | ±1.0 | ±5.0 | mV | |
| Input Offset Current | IIO | ±5.0 | ±50 | nA | |
| Input Bias Current | IIB | 25 | nA | ||
| Output Saturation Voltage | VO | 80 | mV (Isink= 4 mA) | ||
| Operating Temperature Range | TA | -40 | 105 | °C | |
| Package Type | DFN8 2x2 |
Key Features
- Wide single-supply voltage range: 2 V to 36 V or dual supplies: ±1 V to ±18 V
- Very low supply current: 0.45 mA independent of supply voltage (1 mW/comparator at 5 V)
- Low input bias current: 20 nA typ.
- Low input offset current: ±3 nA typ.
- Low input offset voltage: ±1 mV typ.
- Input common-mode voltage range includes ground
- Differential input voltage range equal to the supply voltage
- Output voltage compatible with TTL, DTL, ECL, MOS, and CMOS logic levels
- Available in various packages including DFN8 2x2, MiniSO8, TSSOP8, and SO8
- Internal ESD protection: 2 kV HBM on all pins for the LM393W version
Applications
The LM393QT is versatile and can be used in a variety of applications, including:
- Consumer electronics: Due to its low power consumption and precision, it is suitable for battery-powered devices and other consumer electronics.
- Automotive electronics: The device is AEC-Q100 qualified and PPAP capable, making it reliable for automotive applications.
- Industrial electronics: Its robust specifications and wide operating temperature range make it ideal for industrial environments.
- Vacuum robots and other automated systems: The fast response time and low offset voltage make it suitable for precision control systems.
Q & A
- What is the operating voltage range of the LM393QT?
The LM393QT operates over a wide single-supply voltage range of 2 V to 36 V or dual supplies from ±1 V to ±18 V.
- What is the typical input offset voltage of the LM393QT?
The typical input offset voltage is ±1.0 mV).
- What is the input bias current of the LM393QT?
The input bias current is typically 20 nA).
- Is the LM393QT compatible with various logic levels?
Yes, the output voltage is compatible with TTL, DTL, ECL, MOS, and CMOS logic levels).
- What are the available packages for the LM393QT?
The LM393QT is available in DFN8 2x2, MiniSO8, TSSOP8, and SO8 packages).
- Does the LM393QT have ESD protection?
The LM393W version of this series has internal ESD protection of 2 kV HBM on all pins).
- What is the operating temperature range of the LM393QT?
The operating temperature range is from -40°C to 105°C).
- Is the LM393QT RoHS compliant?
Yes, the LM393QT is Pb-free, halogen-free/BFR-free, and RoHS compliant).
- What are some common applications of the LM393QT?
The LM393QT is used in consumer electronics, automotive electronics, industrial electronics, and automated systems like vacuum robots).
- How much current does the LM393QT typically consume?
The LM393QT typically consumes 0.45 mA of supply current, independent of the supply voltage).
