Overview
The LM393M from Texas Instruments is a dual independent precision voltage comparator designed to operate from a single or dual power supply over a wide range of voltages. This device is part of the LM393 series, known for its high precision, low offset voltage, and low power consumption, making it suitable for various applications including consumer, automotive, and industrial electronics.
The LM393M features two independently functioning comparators in a single package, each with low input bias current, low input offset current, and a maximum offset voltage of ±3 mV. This makes the device an excellent choice for applications requiring high accuracy and reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.0 V to 36 V | V |
| Split-Supply Range | ±1.0 V to ±18 V | V |
| Supply Current Drain | 0.4 mA | mA |
| Input Bias Current | 25 nA | nA |
| Input Offset Current | ±5 nA | nA |
| Maximum Offset Voltage | ±3 mV | mV |
| Input Common-Mode Voltage Range | Includes Ground | V |
| Differential Input Voltage Range | Equal to Power Supply Voltage | V |
| Output Saturation Voltage | 250 mV at 4 mA | mV |
| Output Voltage Compatibility | TTL, DTL, ECL, MOS, and CMOS logic systems | |
| Operating Temperature Range | 0°C to 70°C | °C |
| Package Type | 8-SOIC, DSBGA |
Key Features
- Wide single-supply range: 2.0 V to 36 V and split-supply range: ±1.0 V to ±18 V
- Very low supply current drain (0.4 mA) independent of supply voltage
- Low input biasing current: 25 nA and low input offset current: ±5 nA
- Maximum offset voltage: ±3 mV
- Input common-mode voltage range includes ground
- Differential input voltage range equal to the power supply voltage
- Low output saturation voltage: 250 mV at 4 mA
- Output voltage compatible with TTL, DTL, ECL, MOS, and CMOS logic systems
- Available in 8-SOIC and DSBGA packages
- High precision comparators with reduced VOS drift over temperature
- Eliminates the need for dual supplies and allows sensing near ground
- Power drain suitable for battery operation
Applications
The LM393M is versatile and can be used in a variety of applications, including:
- Limit comparators
- Simple analog to digital converters
- Pulse, squarewave, and time delay generators
- Wide range VCO (Voltage-Controlled Oscillator)
- MOS clock timers and multivibrators
- High voltage digital logic gates
- Battery-powered devices due to its low power consumption
These comparators are also suitable for consumer, automotive, and industrial electronics due to their high precision and robust design.
Q & A
- What is the supply voltage range of the LM393M?
The LM393M operates over a wide single-supply range of 2.0 V to 36 V and a split-supply range of ±1.0 V to ±18 V.
- What is the typical supply current drain of the LM393M?
The supply current drain is very low at 0.4 mA, independent of the supply voltage.
- What is the input bias current of the LM393M?
The input bias current is 25 nA.
- What is the maximum offset voltage of the LM393M?
The maximum offset voltage is ±3 mV.
- Is the LM393M compatible with various logic systems?
Yes, the output voltage of the LM393M is compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.
- What are the typical applications of the LM393M?
The LM393M is used in limit comparators, simple analog to digital converters, pulse and squarewave generators, time delay generators, wide range VCO, MOS clock timers, multivibrators, and high voltage digital logic gates..
- What are the available package types for the LM393M?
The LM393M is available in 8-SOIC and DSBGA packages..
- Is the LM393M suitable for battery-powered applications?
Yes, due to its low power consumption of 0.4 mA at 5 V, it is suitable for battery-powered applications..
- What is the operating temperature range of the LM393M?
The operating temperature range is 0°C to 70°C..
- Does the LM393M have ESD protection?
Yes, the LM393M has ESD clamps on the inputs to increase the ruggedness of the device without affecting performance..
- Is the LM393M RoHS compliant?
Yes, the LM393M is Pb-free, halogen-free/BFR-free and is RoHS compliant..
