Overview
The LM393AMX series, produced by Fairchild Semiconductor, are dual independent precision voltage comparators. These devices are capable of single or split supply operation and are designed to permit a common mode range-to-ground level with single supply operation. The LM393AMX is particularly noted for its low input offset voltage, making it an excellent choice for various applications in consumer, automotive, and industrial electronics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Supply, Single/Dual (±) | 2V ~ 36V, ±1V ~ 18V | Vdc |
| Voltage - Input Offset (Max) | 2mV @ 5V | mV |
| Current - Input Bias (Max) | 0.25µA @ 5V | µA |
| Current - Output (Typ) | 18mA @ 5V | mA |
| Current - Quiescent (Max) | 2.5mA | mA |
| Operating Temperature | 0°C ~ 70°C | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | |
| Mounting Type | Surface Mount |
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 and 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.
Applications
- Current and voltage sensing
- Analog front end
- Power management
- Point of load regulators
- DC/DC and AC/DC power supplies
- System control and monitoring
- Wearable devices
- Mobile phones and tablets
- Battery-powered electronics
- General purpose low voltage applications.
Q & A
- What is the LM393AMX?
The LM393AMX is a dual independent precision voltage comparator produced by Fairchild Semiconductor, capable of single or split supply operation.
- What are the supply voltage ranges for the LM393AMX?
The device operates with a single supply range of 2.0 Vdc to 36 Vdc and a split-supply range of ±1.0 Vdc to ±18 Vdc.
- What is the input offset voltage of the LM393AMX?
The input offset voltage is as low as 2.0 mV.
- What is the quiescent current of the LM393AMX?
The quiescent current is 2.5 mA.
- What are the typical applications of the LM393AMX?
Applications include current and voltage sensing, analog front end, power management, point of load regulators, and more.
- Is the LM393AMX RoHS compliant?
Yes, the LM393AMX is Pb-free, halogen-free/BFR-free and RoHS compliant.
- What is the operating temperature range of the LM393AMX?
The operating temperature range is 0°C to 70°C.
- What package type does the LM393AMX come in?
The LM393AMX comes in an 8-SOIC package.
- Is the LM393AMX still in production?
No, the LM393AMX is obsolete and no longer manufactured.
- What are some substitutes for the LM393AMX?
Substitutes include the NCV2903 and LM293.
