Overview
The LM393MX, produced by Texas Instruments, is part of the LM193-N series of dual precision voltage comparators. These comparators are designed to operate from a single power supply over a wide range of voltages, from 2.0 V to 36 V, and can also function with dual supplies ranging from ±1.0 V to ±18 V. They are characterized by their low power supply current drain, high precision, and compatibility with various logic systems such as TTL, DTL, ECL, MOS, and CMOS.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.0 V to 36 V | V |
| Single or Dual Supplies | ±1.0 V to ±18 V | V |
| Supply Current | 0.4 mA (typ.) | mA |
| Input Bias Current | 25 nA (typ.) | nA |
| Input Offset Current | ±5 nA (typ.) | nA |
| Maximum Offset Voltage | ±3 mV (max) | 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 |
| Operating Temperature Range | 0°C to 70°C | °C |
Key Features
- Wide supply voltage range: 2.0 V to 36 V
- Single or dual supplies: ±1.0 V to ±18 V
- Very low supply current drain: 0.4 mA (typ.)
- Low input biasing current: 25 nA (typ.)
- Low input offset current: ±5 nA (typ.)
- Maximum offset voltage: ±3 mV (max)
- 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-Bump (12 mil) DSBGA package
- 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 LM393MX is versatile and can be used in various applications, including:
- Limit comparators
- Simple analog to digital converters
- Pulse, squarewave, and time delay generators
- Wide range VCO (Voltage-Controlled Oscillators)
- MOS clock timers
- Multivibrators
- High voltage digital logic gates
These comparators are designed to directly interface with TTL and CMOS logic systems, and when operated from both plus and minus power supplies, they can also interface with MOS logic, offering a distinct advantage in low power drain over standard comparators.
Q & A
- What is the supply voltage range of the LM393MX?
The LM393MX operates over a supply voltage range of 2.0 V to 36 V and can also function with dual supplies ranging from ±1.0 V to ±18 V.
- What is the typical supply current of the LM393MX?
The typical supply current of the LM393MX is 0.4 mA, which is independent of the supply voltage.
- What is the input bias current of the LM393MX?
The input bias current of the LM393MX is typically 25 nA.
- What is the maximum offset voltage of the LM393MX?
The maximum offset voltage of the LM393MX is ±3 mV.
- What is the operating temperature range of the LM393MX?
The operating temperature range of the LM393MX is 0°C to 70°C.
- What are the common applications of the LM393MX?
The LM393MX is commonly 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.
- Is the LM393MX compatible with different logic systems?
Yes, the LM393MX is compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.
- What package options are available for the LM393MX?
The LM393MX is available in SOIC (8-pin) and 8-Bump (12 mil) DSBGA packages.
- What is the output saturation voltage of the LM393MX?
The output saturation voltage of the LM393MX is 250 mV at 4 mA.
- Can the LM393MX operate near ground voltage?
Yes, the LM393MX allows sensing near ground since its input common-mode voltage range includes ground.
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Yes, the LM393MX has a power drain suitable for battery operation due to its low supply current.
