Overview
The LM2901PT, produced by STMicroelectronics, is a low-power quad voltage comparator integrated circuit. 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. The comparators are notable for their ability to operate with input common-mode voltage ranges that include the negative rail, even when powered from a single supply voltage.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Supply Voltage Range | +2 V to +36 V or ±1 V to ±18 V | V |
| Supply Current | 1.1 mA | mA |
| Input Bias Current | 25 nA (typ.) | nA |
| Input Offset Current | ±5 nA (typ.) | nA |
| Input Common-Mode Voltage Range | Includes negative rail | V |
| Output Saturation Voltage | 250 mV (typ. at I_O = 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 to 125°C | °C |
| Package Type | TSSOP-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 the negative rail
- Low output saturation voltage: 250 mV (typ. at I_O = 4 mA)
- Differential input voltage range equal to the supply voltage
- Outputs compatible with TTL, DTL, ECL, MOS, and CMOS
Applications
The LM2901PT is suitable for a variety of applications, including:
- Industrial control systems
- Automotive systems
- Medical devices
- Consumer electronics requiring precision voltage comparison
- General-purpose voltage comparison in various electronic circuits
Q & A
- What is the supply voltage range for the LM2901PT?
The LM2901PT 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 LM2901PT?
The typical supply current is 1.1 mA, independent of the supply voltage.
- What is the input bias current of the LM2901PT?
The input bias current is typically 25 nA.
- Can the LM2901PT operate with input voltages below the negative rail?
Yes, the input common-mode voltage range includes the negative rail.
- What is the output saturation voltage of the LM2901PT?
The output saturation voltage is typically 250 mV at an output current of 4 mA.
- Is the LM2901PT compatible with various logic families?
Yes, the outputs are compatible with TTL, DTL, ECL, MOS, and CMOS logic families.
- What is the operating temperature range of the LM2901PT?
The operating temperature range is from -40°C to 125°C.
- What package types are available for the LM2901PT?
The LM2901PT is available in a TSSOP-14 package.
- Is the LM2901PT RoHS compliant?
Yes, the LM2901PT is RoHS compliant and comes in ECOPACK3 packages.
- What are some common applications of the LM2901PT?
Common applications include industrial control systems, automotive systems, medical devices, and general-purpose voltage comparison in electronic circuits.
