Overview
The LM2903N/NOPB is a dual precision voltage comparator produced by Texas Instruments. It is part of the LM193-N series, designed to operate from a single power supply over a wide range of voltages, as well as from split power supplies. These comparators are known for their low offset voltage, low power supply current drain, and compatibility with various logic systems such as TTL, DTL, ECL, MOS, and CMOS. The LM2903N/NOPB is particularly useful in applications requiring high precision and low power consumption.
Key Specifications
| Attribute | Value |
|---|---|
| Comparator Type | Differential |
| Mounting Type | Through Hole |
| Package Type | PDIP (8-Pin) |
| Power Supply Type | Single/Dual: 2 V to 36 V, ±1 V to ±18 V |
| Output Type | Open Collector, Open Drain |
| Number of Channels per Chip | 2 |
| Typical Response Time | 1.3 µs |
| Input Biasing Current | 25 nA |
| Input Offset Current | ±5 nA |
| Maximum Offset Voltage | ±3 mV |
| Operating Temperature Range | -40°C to 85°C |
| Quiescent Supply Current | 0.4 mA (max) |
| Output Saturation Voltage | 250 mV at 4 mA |
Key Features
- Wide supply voltage range: 2.0 V to 36 V, ±1.0 V to ±18 V
- 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
- Low output saturation voltage: 250 mV at 4 mA
- Output voltage compatible with TTL, DTL, ECL, MOS, and CMOS logic systems
- Available in 8-Bump (12 mil) DSBGA package
- High precision comparators with reduced Vos drift over temperature
- Allows sensing near ground and eliminates the need for dual supplies
Applications
- Limit comparators
- Simple analog to digital converters
- Pulse, squarewave, and time delay generators
- Wide range VCO
- MOS clock timers
- Multivibrators
- High voltage digital logic gates
Q & A
- What is the LM2903N/NOPB? The LM2903N/NOPB is a dual precision voltage comparator produced by Texas Instruments.
- What is the operating temperature range of the LM2903N/NOPB? The operating temperature range is -40°C to 85°C.
- What are the power supply options for the LM2903N/NOPB? It can operate from a single power supply (2.0 V to 36 V) or dual power supplies (±1.0 V to ±18 V).
- What is the typical response time of the LM2903N/NOPB? The typical response time is 1.3 µs.
- Is the LM2903N/NOPB compatible with various logic systems? Yes, it is compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.
- What is the maximum offset voltage of the LM2903N/NOPB? The maximum offset voltage is ±3 mV.
- What are some common applications of the LM2903N/NOPB? Common applications include limit comparators, simple analog to digital converters, pulse generators, and high voltage digital logic gates.
- What is the quiescent supply current of the LM2903N/NOPB? The quiescent supply current is 0.4 mA (max).
- Does the LM2903N/NOPB have open collector outputs? Yes, it has open collector and open drain outputs.
- Is the LM2903N/NOPB available in different package types? Yes, it is available in 8-Pin PDIP and 8-Bump (12 mil) DSBGA packages.
