Overview
The LM293QT, produced by STMicroelectronics, is a low-power dual voltage comparator designed to operate from a single supply over a wide range of voltages or from dual supplies. This component is part of the LM193, LM293, and LM393 family, known for their versatility and low power consumption. The LM293QT is particularly suited for applications requiring high accuracy and low power usage, making it ideal for various electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2 V to 36 V or ±1 V to ±18 V | V |
| Supply Current | 0.45 mA (typ.) | mA |
| Input Bias Current | 20 nA (typ.) | nA |
| Input Offset Current | ±3 nA (typ.) | nA |
| Input Offset Voltage | ±1 mV (typ.) | mV |
| Input Common-Mode Voltage Range | Includes ground | |
| Output Saturation Voltage | 80 mV (typ. at Isink= 4 mA) | mV |
| Differential Input Voltage Range | Equal to the supply voltage | |
| Output Compatibility | TTL, DTL, ECL, MOS, CMOS | |
| Package | QFN-8L P 0.5 mm | |
| Operating Temperature Range | -40°C to 125°C | °C |
| ESD Rating (HBM) | 2 kV | V |
Key Features
- Wide single-supply voltage range or dual supplies: 2 V to 36 V or ±1 V to ±18 V
- Very low supply current (0.45 mA) independent of supply voltage
- 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
- Low output saturation voltage: 80 mV typ. (Isink= 4 mA)
- Differential input voltage range equal to the supply voltage
- Output compatible with TTL, DTL, ECL, MOS, CMOS
- Available in various packages including QFN-8L P 0.5 mm
- Internal ESD protection: 2 kV HBM on all pins
Applications
The LM293QT is suitable for a variety of applications, including:
- Voltage monitoring and detection in power supplies and battery management systems
- Threshold detection in industrial control systems
- Signal conditioning in medical devices and instrumentation
- Automotive systems requiring low power and high accuracy
- Vacuum robots and other precision control systems
Q & A
- What is the supply voltage range for the LM293QT?
The LM293QT can operate from a single supply voltage ranging from 2 V to 36 V or from dual supplies ranging from ±1 V to ±18 V.
- What is the typical supply current of the LM293QT?
The typical supply current is 0.45 mA, which is independent of the supply voltage.
- What is the input bias current of the LM293QT?
The input bias current is typically 20 nA.
- What is the input offset voltage of the LM293QT?
The input offset voltage is typically ±1 mV.
- Is the output of the LM293QT compatible with other logic families?
Yes, the output is compatible with TTL, DTL, ECL, MOS, and CMOS logic families.
- What is the operating temperature range of the LM293QT?
The operating temperature range is -40°C to 125°C.
- Does the LM293QT have built-in ESD protection?
Yes, the LM293QT has internal ESD protection rated at 2 kV HBM on all pins.
- In what package is the LM293QT available?
The LM293QT is available in a QFN-8L P 0.5 mm package among others.
- What is the differential input voltage range of the LM293QT?
The differential input voltage range is equal to the supply voltage.
- Is the input common-mode voltage range of the LM293QT inclusive of ground?
Yes, the input common-mode voltage range includes ground.
