Overview
The LM139D from Texas Instruments is a quad differential comparator, designed for military-grade applications. This device is part of the LM139 family, which is known for its robust and reliable performance in various voltage comparison tasks. The LM139D operates from a single power supply over a wide range of voltages and features four independent voltage comparators. It is particularly noted for its low input offset voltage, low input bias current, and low supply current, making it suitable for a variety of applications requiring precise voltage comparisons.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | 2 | - | 36 | V |
| Differential Input Voltage (VID) | ±38 | - | ±38 | V |
| Input Offset Voltage (VIO) | 1 | 2 | 4 | mV |
| Input Bias Current (IIB) | 25 | 100 | 300 | nA |
| Supply Current (ICC) | 1.1 | 1.3 | 2.5 | mA |
| Output Sink Current (ISINK) | 6 | - | 16 | mA |
| Response Time (tre) | 1.3 | - | 1.3 | μs |
| ESD Rating (HBM) | - | - | ±2000 | V |
| Junction Temperature (TJ) | -55 | - | 125 | °C |
Key Features
- Wide single supply voltage range or dual supplies: +2 to +36 V or ±1 V to ±18 V.
- Low input offset voltage: ±1 mV typical.
- Low input bias current: 25 nA typical.
- Low supply current: 1.1 mA independent of supply voltage.
- Input common-mode voltage range includes ground.
- Differential input voltage range equal to the supply voltage.
- Low output saturation voltage: 250 mV typical.
- Output compatible with TTL, DTL, ECL, MOS, and CMOS.
- High ESD rating: up to 2 kV HBM.
- Faster response time of 1 μsec.
Applications
- Vacuum robots
- Single-phase UPS
- Server power supplies
- Cordless power tools
- Wireless infrastructure
- Appliances
- Building automation
- Factory automation and control
- Motor drives
- Infotainment and cluster systems
Q & A
- What is the supply voltage range for the LM139D?
The LM139D can operate from a single supply voltage ranging from 2 V to 36 V or from dual supplies ranging from ±1 V to ±18 V.
- What is the input offset voltage of the LM139D?
The input offset voltage is typically ±1 mV and can range up to ±4 mV over the operating temperature range.
- What is the input bias current of the LM139D?
The input bias current is typically 25 nA and can range up to 300 nA).
- How much current does the LM139D draw from the supply?
The supply current is typically 1.1 mA and can range up to 2.5 mA).
- What is the response time of the LM139D?
The response time is typically 1.3 μs).
- Is the LM139D ESD protected?
- What is the output compatibility of the LM139D?
The output is compatible with TTL, DTL, ECL, MOS, and CMOS).
- What are the typical applications of the LM139D?
The LM139D is used in various applications including vacuum robots, single-phase UPS, server power supplies, cordless power tools, and more).
- What is the junction temperature range for the LM139D?
The junction temperature range is from -55°C to 125°C).
- What is the package type for the LM139D?
The LM139D is available in a 14-SOIC package).
