Overview
The LM393DG, produced by Onsemi, is a dual independent precision voltage comparator. This device is part of the LM393 series, which includes several variants such as LM393, LM393E, LM293, LM2903, and others. The LM393DG is designed for single or split supply operation, making it versatile for various electronic projects. It features a wide single-supply range from 2.0 Vdc to 36 Vdc and a split-supply range from ±1.0 Vdc to ±18 Vdc. The device is known for its low input offset voltage, low current drain, and compatibility with multiple logic levels, including DTL, ECL, TTL, MOS, and CMOS.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage | +36 or ±18 | V |
| Input Differential Voltage | 36 | V |
| Input Common Mode Voltage Range | −0.3 to +36 | V |
| Output Voltage | 36 | V |
| Output Short Circuit-to-Ground Current | 20 | mA |
| Input Offset Voltage (Max) | ±5.0 | mV |
| Input Offset Current (Max) | ±50 | nA |
| Input Bias Current (Max) | 25 | nA |
| Quiescent Current | 0.4 | mA |
| Operating Ambient Temperature Range | 0°C to +70°C | °C |
| Maximum Operating Junction Temperature | 150 | °C |
| Package Type | SOIC-8 | |
| Pin Count | 8 |
Key Features
- Wide single-supply range: 2.0 Vdc to 36 Vdc and split-supply range: ±1.0 Vdc to ±18 Vdc.
- Very low current drain independent of supply voltage: 0.4 mA.
- Low input bias current: 25 nA and low input offset current: 5.0 nA.
- Low input offset voltage: 5.0 mV (max).
- Input common mode range to ground level.
- Differential input voltage range equal to power supply voltage.
- Output voltage compatible with DTL, ECL, TTL, MOS, and CMOS logic levels.
- ESD clamps on the inputs increase the ruggedness of the device without affecting performance.
- Pb-free, halogen-free/BFR-free and RoHS compliant.
- AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
Applications
- Signal Conditioning: The LM393DG is used in filtering noise from analog signals by comparing incoming signals to a reference voltage.
- Motor Control: Employed for pulse width modulation (PWM) due to its high-speed differential input, facilitating motor speed and efficiency adjustments.
- Voltage Regulation: Acts as a core component in control circuits to monitor and optimize voltage levels, ensuring stability in output.
- Battery Monitoring: Used in battery monitoring systems to assess battery health and charge status by continuously matching battery voltage against predefined thresholds.
- Motion Detectors: Evaluates shifts in input signals from sensors, effectively processing these signals to initiate alerts or actions.
- Overcurrent Protection: Detects potential overcurrent situations through comparative analysis of sensed currents and set limits, offering a protection strategy that balances cost-effectiveness with reliability.
Q & A
- What is the power supply voltage range for the LM393DG?
The LM393DG can operate with a single supply voltage from 2.0 Vdc to 36 Vdc or a split supply voltage from ±1.0 Vdc to ±18 Vdc.
- What is the maximum input offset voltage for the LM393DG?
The maximum input offset voltage for the LM393DG is ±5.0 mV.
- What is the typical quiescent current of the LM393DG?
The typical quiescent current of the LM393DG is 0.4 mA.
- What are the compatible logic levels for the LM393DG output?
The output of the LM393DG is compatible with DTL, ECL, TTL, MOS, and CMOS logic levels.
- Is the LM393DG RoHS compliant?
Yes, the LM393DG is Pb-free, halogen-free/BFR-free and RoHS compliant.
- What is the operating ambient temperature range for the LM393DG?
The operating ambient temperature range for the LM393DG is 0°C to +70°C.
- Can the LM393DG handle differential input voltages larger than the supply voltage?
Yes, the LM393DG can handle differential input voltages larger than the supply voltage without damaging the comparator’s inputs.
- What is the maximum output short circuit-to-ground current for the LM393DG?
The maximum output short circuit-to-ground current for the LM393DG is 20 mA.
- Is the LM393DG suitable for automotive applications?
Yes, the LM393DG is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other applications requiring unique site and control change requirements.
- What package types are available for the LM393DG?
The LM393DG is available in SOIC-8 and PDIP-8 packages.
- How many pins does the LM393DG have?
The LM393DG has 8 pins.
