Overview
The LM2903ITL/NOPB, produced by Texas Instruments, is a low-power, low-offset voltage dual comparator. This device is part of the LMx93 series and is designed to operate over a wide range of supply voltages, making it versatile for various applications. The LM2903ITL/NOPB features two independent precision voltage comparators, each with a low input bias current and low input offset voltage, ensuring high precision and reliability.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Supply Voltage Range | V | 2.0 | 36 | ||
| Single or Dual Supplies | V | ±1.0 | ±18 | ||
| Supply Current | V+= 5 V | mA | 0.4 | 1.0 | |
| Input Offset Voltage | V+= 5 V, TA = 25°C | mV | 2.0 | 5.0 | 7.0 |
| Input Bias Current | VCM = 0 V | nA | 25 | 100 | 250 |
| Input Offset Current | VCM = 0 V | nA | 5.0 | 25 | 50 |
| Input Common Mode Voltage Range | V+= 30 V | V | 0 | V+−1.5 | |
| Saturation Voltage | VIN(−)=1V, VIN(+)=0, ISINK≤4 mA | mV | 400 | 700 | |
| Output Leakage Current | VIN(−)=0, VIN(+)=1V, VO=5 V | nA | 0.1 | ||
| Large Signal Response Time | VIN=TTL Logic Swing, VREF=1.4 V, VRL=5V, RL=5.1 kΩ | ns | 300 | 1300 |
Key Features
- Wide supply voltage range: 2.0 V to 36 V, or ±1.0 V to ±18 V for dual supplies.
- Very low supply current drain: 0.4 mA at 5 V, 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 various packages, including SOIC and DSBGA.
Applications
- Battery-powered applications due to low power consumption.
- Industrial applications requiring high precision and low power drain.
- Limit comparators, simple analog to digital converters, pulse, squarewave, and time delay generators.
- Wide range VCO, MOS clock timers, multivibrators, and high voltage digital logic gates.
- Direct interface with TTL, CMOS, and MOS logic systems.
Q & A
- What is the supply voltage range for the LM2903ITL/NOPB?
The supply voltage range is from 2.0 V to 36 V, or ±1.0 V to ±18 V for dual supplies.
- How much current does the LM2903ITL/NOPB draw from the supply?
The supply current is 0.4 mA at 5 V.
- What is the input bias current of the LM2903ITL/NOPB?
The input bias current is 25 nA.
- What is the maximum offset voltage for the LM2903ITL/NOPB?
The maximum offset voltage is ±3 mV.
- Can the LM2903ITL/NOPB operate with a single supply?
- What is the output saturation voltage of the LM2903ITL/NOPB?
The output saturation voltage is 250 mV at 4 mA.
- Is the LM2903ITL/NOPB compatible with different logic systems?
- What are some typical applications of the LM2903ITL/NOPB?
Typical applications include battery-powered devices, industrial applications, limit comparators, and simple analog to digital converters.
- What packages are available for the LM2903ITL/NOPB?
The LM2903ITL/NOPB is available in SOIC and DSBGA packages.
- How does the LM2903ITL/NOPB handle high temperatures?
The device must be derated based on a 125°C maximum junction temperature and a thermal resistance of 170°C/W for high temperature operations.
