LM2901 consists of four independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. The IC basically offers a low-cost high-performance solution to conventional design issues & also possesses direct interfacing capability with almost every PMOS, CMOS, and NMOS device. The IC also offers flexibility in terms of optimization preferences in high optimization areas, allowing it to be the first choice for most electronic design applications.
Voltage Comparator
A voltage comparator is a simple electronic circuit that has the capability to compare two applied voltages. The comparator then switches the output to either a high or low state depending upon which voltage is higher. Comparator circuits are widely used in applications, where physical measurements need to be compared, provided those physical variables can be translated into voltage signals. In a practical voltage comparator; the reference voltage is set using the voltage divider network comprising of R1 and R2.
Vref = (V+/ (R1 + R2)) x R2.
LM2901 Pinout
LM2901 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | OUTPUT 2 | Output Of Comparator 2 |
| 2 | OUTPUT 1 | Output Of Comparator 1 |
| 3 | V+ | Positive Supply Voltage |
| 4 | INV-INPUT 1 | Inverting input Of Comparator 1 |
| 5 | NON-INV-INPUT 1 | Non Inverting input Of Comparator 1 |
| 6 | INV-INPUT 2 | Inverting input Of Comparator 2 |
| 7 | NON-INV-INPUT 2 | Non Inverting input Of Comparator 2 |
| 8 | INV-INPUT 3 | Inverting input Of Comparator 3 |
| 9 | NON-INV-INPUT 3 | Non Inverting input Of Comparator 3 |
| 10 | INV-INPUT 4 | Inverting input Of Comparator 4 |
| 11 | NON-INV-INPUT 4 | Non Inverting input Of Comparator 4 |
| 12 | GND | Ground Pin |
| 13 | OUTPUT 4 | Output Of Comparator 4 |
| 14 | OUTPUT 3 | Output Of Comparator 3 |
Order Codes
| Part No | Temp: Range |
|---|---|
| LM339/LM339A | 0˚C to +70˚C |
| LM239/LM239A | −25˚C to +85˚C |
| LM2901 | −40˚C to +85˚C |
| LM139/LM139A | −55˚C to +125˚C |
| LM3302 | −40˚C to +85˚C |
LM2901 Features
- Wide supply voltage range
- — LM2901: 2 to 36 VDC or ±1 to ±18 VDC
- Very low supply current drain (0.8 mA) — independent of supply voltage
- Low input biasing current: 25 nA
- Low input offset current: ±5 nA
- Offset voltage: ±3 mV
- Input common-mode voltage range includes GND
- Differential input voltage range equal to the power supply voltage
- Low output saturation voltage: 250 mV at 4 mA
Application
- Reduced VOS drift over temperature
- Eliminates need for dual supplies
- Allows sensing near GND
- Compatible with all forms of logic
- Power drain suitable for battery operation
- High precision comparators
LM2901 Datasheet
You can download this datasheet for LM2901 Quad Comparator from the link given below:
See Also: CD4060 14-Stage Ripple-Carry Binary Counter -Datasheet | CD4066 Quad Bilateral Switch – Datasheet | CD4050 Hex Buffer Converter (N-inverting) – Datasheet
