Overview
The LM2903YDT, produced by STMicroelectronics, is a low-power dual voltage comparator designed to operate from a single supply over a wide range of voltages or from split power supplies. This device is particularly notable for its ability to operate with input common-mode voltage ranges that include the negative rail, even when powered by a single supply voltage. It is highly versatile and energy-efficient, making it suitable for various industrial and automotive applications.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage Range | +2 V to +36 V or ±1 V to ±18 V | V | ||
| Supply Current | 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 Offset Voltage | 1 mV | 7 mV | 15 mV | mV |
| Output Saturation Voltage | 250 mV (IO = 4 mA) | mV | ||
| Operating Temperature Range | -40 °C | +125 °C | °C | |
| Package | SO-8, TSSOP-8L, QFN-8L, MiniSO-8 |
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 negative rail
- 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
Applications
The LM2903YDT is suitable for a variety of applications, including:
- Industrial control systems
- Automotive systems
- Low-frequency op-amp configurations
- Transducer amplifiers
- High-frequency voltage-controlled oscillators (VCOs)
- Driving CMOS, TTL, and other logic circuits
Q & A
- What is the supply voltage range for the LM2903YDT?
The LM2903YDT 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 LM2903YDT?
The typical supply current is 0.4 mA, independent of the supply voltage.
- What is the input bias current of the LM2903YDT?
The input bias current is typically 25 nA.
- Does the LM2903YDT support automotive applications?
- What are the available package types for the LM2903YDT?
The device is available in SO-8, TSSOP-8L, QFN-8L, and MiniSO-8 packages.
- What is the operating temperature range of the LM2903YDT?
The operating temperature range is from -40 °C to +125 °C.
- Is the LM2903YDT compatible with different logic families?
- What is the output saturation voltage of the LM2903YDT?
The output saturation voltage is typically 250 mV at an output current of 4 mA.
- Can the LM2903YDT be used in low-frequency op-amp configurations?
- Are there any related products with higher ESD performances or different operating temperatures?
