LM2903 consists of two independent precision voltage comparators with an offset voltage specification as low as 2.0 mV, designed specifically to operate from a single power supply over a wide range of voltages.
The IC eliminates the requirement of external biasing parts/components in various applications. The IC is also calibrated to be used over a wide range of commercial, industrial, and military temperature ranges. LM2903 always comes in an 8 pin hermetically sealed, dual inline IC packaging (DIP). The IC is designed with conformity with low-power, bandwidth, and high stability in order to operate with a single power supply over extensive operating voltage ranges.
Voltage Comparator
A voltage comparator can be defined as an electronic circuit that can compare two input voltages and distinguish which one of them is at a higher level of amplitude.
There are two main types of voltage comparators:
- Non inverting Comparators
- Inverting Comparators
LM2903 Pinout
LM2903 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | OUTPUT A | Output Of Comparator A |
| 2 | INV-INPUT A | Inverting Input Of Comparator A |
| 3 | NON-INV-INPUT A | Non Inverting Input Of Comparator A |
| 4 | GND | Ground Pin |
| 5 | NON-INV-INPUT B | Non Inverting Input Of Comparator B |
| 6 | INV-INPUT B | Inverting Input Of Comparator B |
| 7 | OUTPUT B | Output Of Comparator B |
| 8 | V+ | Positive Supply Voltage |
Order Codes
| Part No | Temp: Range |
|---|---|
| LM393/LM393A | 0˚C to +70˚C |
| LM293/LM293A | −25˚C to +85˚C |
| LM193/LM193A | −55˚C to +125˚C |
| LM2903 | −40˚C to +85˚C |
LM2903 Features
- Wide supply
- — Voltage range: 2.0V to 36V
- — single or dual supplies: ±1.0V to ±18V
- Very low supply current drain (0.4 mA) — independent of supply voltage
- Low input biasing current: 25 nA
- Low input offset current: ±5 nA
- Maximum offset voltage: ±3 mV
- Input common-mode voltage range includes ground
- Differential input voltage range equal to the power supply voltage
Application
- Reduced VOS drift over temperature
- Eliminates need for dual supplies
- Allows sensing near ground
- Compatible with all forms of logic
- Power drain suitable for battery operation
LM2903 Datasheet
You can download this datasheet for LM2903 Low Power Dual Voltage Comparator from the link given below:
See Also: CD4052 Differential 4-channel Multiplexer/Demultiplexer Datasheet | CD4066 Quad Bilateral Switch – Datasheet | CD4030 Quad EXCLUSIVE-OR Gate -Datasheet
