Overview
The LM193DT, produced by STMicroelectronics, is a low-power dual voltage comparator. It is part of the LM193, LM293, LM393, and LM393W family of devices, each consisting of two independent low-voltage comparators. These comparators are designed to operate from a single supply over a wide range of voltages (2 V to 36 V) or from dual supplies (±1 V to ±18 V). They are notable for their ability to operate with an input common-mode voltage range that includes ground, even when powered from a single supply voltage.
The LM193DT is particularly useful in applications requiring low power consumption and high reliability, making it suitable for various industrial and 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 (at 5 V) | 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 | V |
| Output Saturation Voltage | 80 mV (typ. at Isink = 4 mA) | mV |
| Differential Input Voltage Range | Equal to the supply voltage | V |
| Output Compatibility | TTL, DTL, ECL, MOS, CMOS | - |
| Package Options | SO-8, QFN-8L P 0.5 mm | - |
| Operating Temperature Range | 0 to 70 °C | °C |
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
- TTL, DTL, ECL, MOS, CMOS compatible outputs
- Available in SO-8 and QFN-8L P 0.5 mm packages
Applications
The LM193DT is versatile and can be used in a variety of applications, including:
- Industrial control systems
- Basic comparator circuits
- Driving TTL, DTL, ECL, MOS, and CMOS logic circuits
- Low-frequency op-amp configurations
- Transducer amplifiers
- Zero crossing detectors
Q & A
- What is the supply voltage range for the LM193DT?
The LM193DT can operate from a single supply voltage range of 2 V to 36 V or from dual supplies ranging from ±1 V to ±18 V.
- What is the typical supply current of the LM193DT?
The typical supply current is 0.45 mA, independent of the supply voltage.
- What is the input bias current of the LM193DT?
The input bias current is typically 20 nA.
- What is the input offset voltage of the LM193DT?
The input offset voltage is typically ±1 mV.
- Does the input common-mode voltage range include ground?
- What is the output saturation voltage of the LM193DT?
The output saturation voltage is typically 80 mV at an output sink current of 4 mA.
- What are the compatible output types for the LM193DT?
The outputs are compatible with TTL, DTL, ECL, MOS, and CMOS logic.
- In what packages is the LM193DT available?
The LM193DT is available in SO-8 and QFN-8L P 0.5 mm packages.
- What is the operating temperature range for the LM193DT?
The operating temperature range is from 0 to 70 °C.
- Does the LM193DT have any special protection features?
The LM393W variant offers additional ESD robustness of 2 kV HBM on all pins, but this is not a feature of the LM193DT specifically.
