Overview
The LM139DG4, produced by Texas Instruments, is a quad differential comparator integrated circuit. It is part of the LM139 family, which includes several variants designed for different operating temperature ranges and package types. This device is characterized for operation over a wide range of temperatures and is suitable for various industrial and automotive applications. The LM139DG4 is housed in a 14-pin SOIC package and is known for its low power consumption, high accuracy, and robust design.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage (VS) | 2 | 36 | V |
| Differential Input Voltage (VID) | ±38 | ±38 | V |
| Input Pins Voltage (IN+, IN–) | -0.3 | 38 | V |
| Output Pin Voltage (OUT) | -0.3 | 38 | V |
| Output Sink Current | 25 | mA | |
| Input Bias Current (typ/max) | 3.5 / 25 | nA | |
| Input Offset Voltage (max over temp) | ± 5.5 | mV | |
| Response Time (typ) | 1 | µsec | |
| Ambient Temperature (TA) | -55 | 125 | °C |
| Junction Temperature (TJ) | 150 | °C |
Key Features
- Low Supply-Current Drain: Independent of supply voltage, typically 0.8 mA per comparator.
- Low Input Bias Current: Typically 3.5 nA.
- Low Input Offset Voltage: Typically 2 mV.
- Common-Mode Input Voltage Range: Includes ground.
- Differential Input Voltage Range: Equal to the maximum-rated supply voltage, ±38 V.
- Low Output Saturation Voltage: Compatible with TTL, MOS, and CMOS.
- Fast Response Time: Typically 1 µsec.
- ESD Rating (HBM): Up to 2 kV.
Applications
- Industrial Automation: Used in various industrial control systems.
- Automotive Systems: Suitable for HEV/EV and power train applications.
- Server Power Supplies: Used in server PSU designs.
- Cordless Power Tools: Applied in cordless power tool circuits.
- Wireless Infrastructure: Utilized in wireless infrastructure systems.
- Building Automation: Employed in building automation and control systems.
- Motor Drives: Used in motor drive applications.
- Infotainment & Cluster Systems: Applied in automotive infotainment and cluster systems.
Q & A
- What is the typical supply current of the LM139DG4?
The typical supply current is 0.8 mA per comparator, independent of the supply voltage.
- What is the input bias current of the LM139DG4?
The input bias current is typically 3.5 nA.
- What is the maximum differential input voltage for the LM139DG4?
The maximum differential input voltage is ±38 V.
- Is the LM139DG4 compatible with TTL, MOS, and CMOS outputs?
- What is the response time of the LM139DG4?
The response time is typically 1 µsec.
- What is the ESD rating of the LM139DG4?
The ESD rating is up to 2 kV (HBM).
- What are the operating temperature ranges for the LM139DG4?
The operating temperature range is from -55°C to 125°C.
- What package type is the LM139DG4 available in?
The LM139DG4 is available in a 14-pin SOIC package.
- Can the LM139DG4 be used in automotive applications?
- Is the LM139DG4 military-grade?
