Overview
The LM319N/NOPB is a high-speed dual comparator integrated circuit produced by Texas Instruments. It is part of the LM119 series, which includes the LM119, LM219, and LM319 models. These comparators are fabricated on a single monolithic chip and are designed to operate over a wide range of supply voltages, including a single 5-V logic supply and up to ±15 V. The LM319N/NOPB is particularly noted for its high speed, low input currents, and compatibility with various logic families such as RTL, DTL, and TTL. It is also capable of driving lamps and relays at currents up to 25 mA.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Total Supply Voltage | - | - | 36 | V |
| Input Offset Voltage (LM319A) | 0.5 | 1 | 2 | mV |
| Input Offset Current (LM319A) | 20 | 40 | 80 | nA |
| Input Bias Current | 150 | 500 | 1000 | nA |
| Voltage Gain | 20 | 40 | - | V/mV |
| Response Time | - | 80 | - | ns |
| Saturation Voltage | 0.75 | - | 1.5 | V |
| Output Leakage Current | 0.2 | - | 10 | µA |
| Differential Input Voltage | -5 | - | 5 | V |
| Positive Supply Current (V+ = 5 V, V- = 0) | - | 4.3 | - | mA |
| Positive Supply Current (VS = ±15 V) | - | 8 | 12.5 | mA |
| Negative Supply Current (VS = ±15 V) | - | 3 | 5 | mA |
| Operating Temperature (LM319) | 0 | - | 70 | °C |
Key Features
- Two independent comparators on a single chip.
- Operates from a single 5-V supply or up to ±15 V.
- Typically 80-ns response time at ±15 V.
- Minimum fan-out of 2 each side.
- Maximum input current of 1 μA over temperature.
- Inputs and outputs can be isolated from system ground.
- High common-mode slew rate.
- Compatible with RTL, DTL, and TTL logic families.
- Capable of driving lamps and relays at currents up to 25 mA.
Applications
The LM319N/NOPB is versatile and can be used in a variety of applications, including:
- Relay drivers: It can drive relays directly due to its high output current capability.
- Level detection: Its high speed and low input currents make it suitable for level detection circuits.
- Analog-to-digital conversion: It can be used in analog-to-digital converters due to its fast response time.
- Industrial control systems: It is useful in industrial control systems where fast and reliable signal comparison is necessary.
- Medical equipment: Its precision and high speed make it suitable for use in medical devices.
Q & A
- What is the typical response time of the LM319N/NOPB? The typical response time is 80 ns at ±15 V.
- What is the maximum input current of the LM319N/NOPB? The maximum input current is 1 μA over temperature.
- Can the LM319N/NOPB operate from a single 5-V supply? Yes, it can operate from a single 5-V supply or up to ±15 V.
- What is the maximum output current of the LM319N/NOPB? It can drive currents up to 25 mA.
- Is the LM319N/NOPB compatible with TTL logic? Yes, it is compatible with TTL, RTL, and DTL logic families.
- What is the operating temperature range of the LM319N/NOPB? The operating temperature range is from 0°C to 70°C.
- Can the inputs and outputs of the LM319N/NOPB be isolated from system ground? Yes, the inputs and outputs can be isolated from system ground.
- What is the differential input voltage range of the LM319N/NOPB? The differential input voltage range is ±5 V.
- What are some common applications of the LM319N/NOPB? Common applications include relay drivers, level detection, analog-to-digital conversion, industrial control systems, and medical equipment.
- What is the saturation voltage of the LM319N/NOPB? The saturation voltage is between 0.75 V and 1.5 V.
