Overview
The LM2901M/NOPB, produced by Texas Instruments, is a quad differential input voltage comparator designed to operate from a single power supply over a wide range of voltages. This device is part of the LMx39 family, which includes the LM139, LM239, and LM339. It features four independent precision voltage comparators with low offset voltage and high precision, making it suitable for various applications requiring rapid switching and high accuracy.
Key Specifications
| Specification | Value |
|---|---|
| Comparator Type | Differential |
| Mounting Type | Surface Mount |
| Package Type | SOIC (14-Pin) |
| Power Supply Type | Single (3-28 V), Dual (±1 to ±18 V) |
| Output Type | Open Collector |
| Number of Channels per Chip | 4 |
| Typical Response Time | 1.3 µs |
| Pin Count | 14 |
| Dimensions | 8.64 mm x 3.91 mm x 1.45 mm |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | +85 °C |
| Typical Voltage Gain | 100 dB |
| Input Biasing Current | 25 nA |
| Input Offset Current | ±5 nA |
| Offset Voltage | ±3 mV |
Key Features
- Wide supply voltage range: 3-28 V (single supply) or ±1 to ±18 V (dual supply)
- Very low supply current drain: 0.8 mA, independent of supply voltage
- Low input biasing current: 25 nA
- Low input offset current: ±5 nA
- Low offset voltage: ±3 mV
- 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
- High-precision comparators with reduced offset drift over temperature
Applications
The LM2901M/NOPB is versatile and can be used in a variety of applications, including:
- Voltage monitoring and sensing near ground
- Window comparators and over-/under-voltage supervisors
- Interface with TTL, CMOS, and other logic systems
- Battery-operated devices due to low power supply current drain
- Industrial control systems, medical devices, and automotive electronics where high precision and reliability are required
Q & A
- What is the LM2901M/NOPB?
The LM2901M/NOPB is a quad differential input voltage comparator produced by Texas Instruments. - What is the typical response time of the LM2901M/NOPB?
The typical response time is 1.3 µs. - What are the operating temperature ranges for the LM2901M/NOPB?
The operating temperature range is from -40 °C to +85 °C. - What is the power supply voltage range for the LM2901M/NOPB?
The device can operate from a single supply of 3-28 V or dual supplies of ±1 to ±18 V. - What is the output type of the LM2901M/NOPB?
The output type is open collector. - How many channels does the LM2901M/NOPB have?
The device has four independent channels. - What is the input biasing current of the LM2901M/NOPB?
The input biasing current is 25 nA. - Is the LM2901M/NOPB compatible with different logic systems?
Yes, it is compatible with TTL, DTL, ECL, MOS, and CMOS logic systems. - What are some common applications of the LM2901M/NOPB?
Common applications include voltage monitoring, window comparators, and interface with various logic systems. - Why is the LM2901M/NOPB suitable for battery-operated devices?
It is suitable due to its very low supply current drain of 0.8 mA, which is independent of the supply voltage.
