Overview
The LM2901-N, produced by Texas Instruments, is a low-offset, quad differential comparator. This device is part of the LMx39-N series, which includes four independent precision voltage comparators designed to operate over a wide range of voltages. The LM2901-N is notable for its low offset voltage, low power consumption, and compatibility with various logic systems.
It is suitable for applications requiring high precision and low power drain, making it ideal for battery-operated devices and systems that need to interface with TTL, DTL, ECL, MOS, and CMOS logic.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Supply Voltage (Single Supply) | VDC | 2 | - | 36 |
| Supply Voltage (Dual Supply) | VDC | ±1 | - | ±18 |
| Input Offset Voltage | mVDC | - | 2.0 | 5.0 |
| Input Bias Current | nA | - | 25 | 250 |
| Input Offset Current | nA | - | 5.0 | 50 |
| Input Common-Mode Voltage Range | VDC | 0 | - | V+ - 1.5 |
| Supply Current | mA | - | 0.8 | 2.0 |
| Output Saturation Voltage | mVDC | - | 250 | 400 |
| Operating Temperature | °C | -40 | - | 85 |
Key Features
- Wide supply voltage range: 2 to 36 VDC or ±1 to ±18 VDC
- Low offset voltage: up to 2 mV maximum
- Low input biasing current: 25 nA
- Low input offset current: ±5 nA
- Input common-mode voltage range includes ground
- Differential input voltage range equal to the power supply voltage
- Low output saturation voltage: 250 mV at 4 mA
- Output voltage compatible with TTL, DTL, ECL, MOS, and CMOS logic systems
- Low power consumption: 0.8 mA supply current independent of supply voltage
Applications
- Limit comparators
- Simple analog-to-digital converters (ADCs)
- Pulse, squarewave, and time delay generators
- One-shot multivibrators with input lockout
- Wide range voltage-controlled oscillators (VCOs)
- MOS clock timers
- Multivibrators and high-voltage digital logic gates
Q & A
- What is the supply voltage range for the LM2901-N?
The LM2901-N can operate from a single supply voltage of 2 to 36 VDC or from dual supplies of ±1 to ±18 VDC.
- What is the typical input offset voltage of the LM2901-N?
The typical input offset voltage is up to 2 mV.
- What is the input bias current of the LM2901-N?
The input bias current is 25 nA.
- Can the LM2901-N operate with TTL and CMOS logic systems?
- What is the operating temperature range for the LM2901-N?
The operating temperature range is -40°C to 85°C.
- What are some common applications of the LM2901-N?
Common applications include limit comparators, simple ADCs, pulse and time delay generators, one-shot multivibrators, VCOs, MOS clock timers, and high-voltage digital logic gates.
- How much power does the LM2901-N consume?
The supply current is 0.8 mA, which is independent of the supply voltage.
- What is the differential input voltage range for the LM2901-N?
The differential input voltage range is equal to the power supply voltage.
- Is the LM2901-N suitable for battery-operated devices?
- What is the output saturation voltage of the LM2901-N?
The output saturation voltage is 250 mV at 4 mA.
