Overview
The LM2903HDT is a low-power dual voltage comparator produced by 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. It is notable for its low power consumption and wide operating voltage range, making it suitable for various applications, including industrial and automotive sectors.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage | 2 V | - | 36 V | V |
| Dual Supply Voltage | ±1 V | - | ±18 V | V |
| Supply Current | 0.4 mA | - | - | mA |
| Input Bias Current | 25 nA | - | 250 nA | nA |
| Input Offset Current | ±5 nA | - | 150 nA | nA |
| Input Offset Voltage | 1 mV | 7 mV | 15 mV | mV |
| Output Saturation Voltage | - | 250 mV | - | mV |
| Operating Temperature | -40 °C | - | 150 °C | °C |
| Differential Input Voltage Range | - | - | VCC+ | V |
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.
- 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 qualification.
- Operating temperature up to 150 °C for the LM2903HDT variant.
Applications
The LM2903HDT is suitable for a variety of applications, including:
- Industrial automation and control systems.
- Automotive systems, benefiting from its automotive qualification and wide operating temperature range.
- Consumer electronics, such as smartphones and tablets, due to its low power consumption.
- General-purpose voltage comparison in various electronic circuits.
Q & A
- What is the supply voltage range for the LM2903HDT?
The supply voltage range is from 2 V to 36 V or ±1 V to ±18 V. - What is the typical supply current of the LM2903HDT?
The typical supply current is 0.4 mA. - What is the input bias current of the LM2903HDT?
The input bias current is typically 25 nA. - What is the output saturation voltage of the LM2903HDT?
The output saturation voltage is typically 250 mV at an output current of 4 mA. - Is the LM2903HDT compatible with TTL, DTL, ECL, MOS, and CMOS outputs?
Yes, it is compatible with these output types. - What is the operating temperature range of the LM2903HDT?
The operating temperature range is from -40 °C to 150 °C. - Is the LM2903HDT automotive qualified?
Yes, it is automotive qualified. - What is the differential input voltage range of the LM2903HDT?
The differential input voltage range is equal to the supply voltage. - Can the LM2903HDT operate from a single supply or dual supplies?
It can operate from both single and dual supplies. - What is the input common-mode voltage range of the LM2903HDT?
The input common-mode voltage range includes ground and extends up to (VCC+) - 1.5 V.
