Overview
The LM2901DT, produced by STMicroelectronics, is a low-power quad precision voltage comparator. This device consists of four independent precision 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 ability to operate with input common-mode voltage ranges that include the negative rail, even when using a single power supply voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | +2 V to +36 V or ±1 V to ±18 V | V |
| Supply Current (all comparators) | 1.1 mA | mA |
| Input Offset Voltage | 25 nA to 400 nA | nA |
| Input Bias Current | 25 nA (typ.) | nA |
| Input Offset Current | ±5 nA (typ.) | nA |
| Input Common-Mode Voltage Range | 0 V to VCC+ - 1.5 V | V |
| Output Saturation Voltage | 250 mV (typ. at IO = 4 mA) | mV |
| Large Signal Response Time | 1.3 µs | µs |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package | SO-14 |
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 (1.1 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 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.
Applications
The LM2901DT is suitable for a variety of applications, including industrial control systems, medical devices, and automotive systems. Its low power consumption and wide operating voltage range make it ideal for use in battery-powered devices and systems requiring high precision voltage comparison. Additionally, its compatibility with multiple logic families (TTL, DTL, ECL, MOS, CMOS) makes it versatile for various digital and analog circuits.
Q & A
- What is the supply voltage range of the LM2901DT? The LM2901DT can operate from a single supply voltage of +2 V to +36 V or from dual supplies of ±1 V to ±18 V.
- What is the typical supply current of the LM2901DT? The typical supply current is 1.1 mA, independent of the supply voltage.
- What is the input bias current of the LM2901DT? The input bias current is typically 25 nA.
- What is the input common-mode voltage range of the LM2901DT? The input common-mode voltage range includes 0 V to VCC+ - 1.5 V.
- What is the output saturation voltage of the LM2901DT? The output saturation voltage is typically 250 mV at an output current of 4 mA.
- How fast is the response time of the LM2901DT? The large signal response time is approximately 1.3 µs.
- What are the compatible output logic families for the LM2901DT? The LM2901DT is compatible with TTL, DTL, ECL, MOS, and CMOS outputs.
- What is the operating temperature range of the LM2901DT? The operating temperature range is from -40°C to +125°C.
- In what package types is the LM2901DT available? The LM2901DT is available in SO-14 packages among others.
- Is the LM2901DT RoHS compliant? Yes, the LM2901DT is RoHS compliant with an Ecopack3 grade.
