Overview
The LM393AD is a dual differential comparator integrated circuit produced by Texas Instruments. It is part of the LM393 series, known for its high performance and versatility in various applications. The LM393AD is designed to operate with a wide single-supply voltage range of 2 V to 36 V or dual supplies from ±1 V to ±18 V, making it suitable for a broad range of electronic systems.
This component is particularly noted for its low input offset voltage, low input bias current, and low supply current, which are critical for precise and efficient comparator operations. The LM393AD is available in several package types, including the 8-SOIC package, which is compact and suitable for surface mount applications.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | Single/Dual | 2 | - | 36 | V |
| Input Offset Voltage | VCC = 5V to 30V | -2 | ±0.37 | 2 | mV |
| Input Bias Current | VCC = 5V | -25 | -3.5 | -50 | nA |
| Input Offset Current | VCC = 5V | -10 | ±0.5 | 10 | nA |
| Common Mode Input Voltage Range | VCC = 3 to 36V | 0 | - | VCC - 2 | V |
| Low Level Output Voltage | ISINK ≤ 4mA, VID = -1V | 110 | - | 400 | mV |
| Quiescent Current | VCC = 5V, no load | 400 | - | 600 | µA |
| Operating Temperature | - | 0 | - | 70 | °C |
Key Features
- Wide Supply Voltage Range: Operates with single-supply voltages from 2 V to 36 V or dual supplies from ±1 V to ±18 V.
- Low Input Offset Voltage: Typically ±0.37 mV, ensuring high precision in comparator operations.
- Low Input Bias Current: Typically -3.5 nA, reducing the impact on input signals.
- Low Supply Current: Approximately 0.45 mA per comparator, independent of supply voltage.
- Output Compatibility: Compatible with TTL, MOS, and CMOS outputs.
- Compact Packaging: Available in 8-SOIC and other surface mount packages).
- ESD Protection: Some versions offer internal ESD protection up to 2 kV HBM).
Applications
- Vacuum Robots: Used in control and sensing circuits for robotic systems.
- Single Phase UPS: Employed in power supply units for reliable voltage monitoring).
- Server PSU: Utilized in server power supplies for efficient voltage regulation).
- Cordless Power Tools: Integrated into battery management and control circuits).
- Wireless Infrastructure: Used in various wireless communication equipment for signal processing).
- Building and Factory Automation: Applied in control systems for industrial automation).
- Motor Drives: Employed in motor control circuits for precise voltage monitoring).
- Infotainment and Cluster Systems: Used in automotive and consumer electronics for signal comparison and processing).
Q & A
- What is the supply voltage range for the LM393AD?
The LM393AD operates with single-supply voltages from 2 V to 36 V or dual supplies from ±1 V to ±18 V).
- What is the typical input offset voltage of the LM393AD?
The typical input offset voltage is ±0.37 mV).
- What is the input bias current of the LM393AD?
The input bias current is typically -3.5 nA).
- How much current does the LM393AD draw from the supply?
The quiescent current is approximately 0.45 mA per comparator).
- What types of outputs are compatible with the LM393AD?
The outputs are compatible with TTL, MOS, and CMOS).
- What is the operating temperature range of the LM393AD?
The operating temperature range is from 0°C to 70°C).
- Does the LM393AD have ESD protection?
Some versions of the LM393 series, like the LM393B, offer internal ESD protection up to 2 kV HBM).
- In what packages is the LM393AD available?
The LM393AD is available in 8-SOIC and other surface mount packages).
- What are some common applications of the LM393AD?
Common applications include vacuum robots, single phase UPS, server PSU, cordless power tools, wireless infrastructure, building and factory automation, motor drives, and infotainment systems).
- What is the response time of the LM393AD?
The response time is typically around 1.3 µs).
