Overview
The LM2903HYDT is a high-voltage, dual-channel, general-purpose comparator from STMicroelectronics. This device consists of two independent low-power voltage comparators designed to operate from a single supply over a wide range of voltages, as well as from split power supplies. The comparators feature a unique characteristic where the input common-mode voltage range includes ground, even when operated from a single power supply voltage.
The LM2903HYDT is particularly suited for industrial and automotive applications due to its robust and reliable design, wide operating voltage range, and low power consumption.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Voltage - Supply, Single/Dual (±) | 2 V to 36 V or ±1 V to ±18 V | V | ||
| Supply Current (all comparators) | 0.4 mA | 1 mA | 2.5 mA | mA |
| Input Bias Current | 25 nA | 250 nA | 400 nA | nA |
| Input Offset Current | ±5 nA | ±50 nA | ±150 nA | nA |
| Input Common-Mode Voltage Range | Includes ground | V | ||
| Low Output Saturation Voltage | 250 mV (IO = 4 mA) | mV | ||
| Differential Input Voltage Range | Equal to the supply voltage | V | ||
| Output Compatibility | TTL, DTL, ECL, MOS, CMOS | |||
| Operating Temperature Range | -40°C | 150°C | °C | |
| Package | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- Wide single supply voltage range or dual supplies: 2 V to 36 V or ±1 V to ±18 V
- Very low supply current: 0.4 mA independent of supply voltage (1 mW/comparator at 5 V)
- Low input bias current: 25 nA typ.
- Low input offset current: ±5 nA typ.
- Input common-mode voltage range includes ground
- Low output saturation voltage: 250 mV typ. (IO = 4 mA)
- Differential input voltage range equal to the supply voltage
- TTL, DTL, ECL, MOS, CMOS compatible outputs
- Automotive-grade AEC-Q100 qualification
- Operating temperature range: -40°C to 150°C
Applications
- Industrial controls and automation
- Automotive electronics
- Power supply monitoring and regulation
- Sensor signal conditioning
- Threshold detection and alarm circuits
Q & A
- What is the supply voltage range of the LM2903HYDT?
The LM2903HYDT can operate from a single supply voltage range of 2 V to 36 V or from dual supplies ±1 V to ±18 V.
- What is the typical supply current of the LM2903HYDT?
The typical supply current is 0.4 mA, independent of the supply voltage.
- What is the input bias current of the LM2903HYDT?
The input bias current is typically 25 nA.
- Does the input common-mode voltage range include ground?
Yes, the input common-mode voltage range includes ground.
- What is the output saturation voltage of the LM2903HYDT?
The output saturation voltage is typically 250 mV at an output current of 4 mA.
- What types of outputs are compatible with the LM2903HYDT?
The outputs are compatible with TTL, DTL, ECL, MOS, and CMOS.
- What is the operating temperature range of the LM2903HYDT?
The operating temperature range is -40°C to 150°C.
- What is the package type of the LM2903HYDT?
The package type is 8-SOIC (0.154", 3.90mm Width).
- Is the LM2903HYDT automotive-grade qualified?
Yes, it is qualified to AEC-Q100 automotive standards.
- What are some common applications of the LM2903HYDT?
Common applications include industrial controls, automotive electronics, power supply monitoring, sensor signal conditioning, and threshold detection.
