Overview
The LM2901 MWA, produced by Texas Instruments, is a quad precision voltage comparator integrated circuit. This device consists of four independent comparators designed to operate from a single power supply over a wide range of voltages, from 2 VDC to 36 VDC or ±1 VDC to ±18 VDC. It is notable for its low power consumption, low input bias current, and low offset voltage, making it suitable for various precision voltage comparison applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage | 2 | - | 36 | VDC or ±1 to ±18 VDC |
| Input Offset Voltage | 2 | 7 | 15 | mVDC |
| Input Bias Current | 25 | 250 | 500 | nADC |
| Input Offset Current | 5 | 50 | 200 | nADC |
| Input Common-Mode Voltage Range | 0 | - | V+ - 1.5 | VDC |
| Supply Current | 0.8 | 2.0 | 2.5 | mADC |
| Response Time | - | 300 | - | ns |
| Output Saturation Voltage | 250 | - | 400 | mVDC at ISINK ≤ 4 mA |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Wide supply voltage range: 2 VDC to 36 VDC or ±1 VDC to ±18 VDC
- Very low supply current drain: 0.8 mA, independent of supply voltage
- Low input biasing current: 25 nA
- Low input offset current: ±5 nA
- Low offset voltage: ±3 mV
- 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
- Extended temperature performance: −40°C to +85°C
Applications
- Limit comparators
- Simple analog to digital converters
- Pulse, squarewave, and time delay generators
- Wide range VCO
- MOS clock timers
- Multivibrators and high voltage digital logic gates
- Direct interface with TTL, CMOS, and MOS logic systems
Q & A
- What is the supply voltage range of the LM2901 MWA? The LM2901 MWA operates from a supply voltage range of 2 VDC to 36 VDC or ±1 VDC to ±18 VDC.
- What is the typical supply current of the LM2901 MWA? The typical supply current is 0.8 mA, which is independent of the supply voltage.
- What is the input offset voltage of the LM2901 MWA? The input offset voltage is as low as 2 mV max.
- Can the LM2901 MWA operate with split power supplies? Yes, the LM2901 MWA can operate from both single and split power supplies.
- What is the operating temperature range of the LM2901 MWA? The operating temperature range is −40°C to +85°C.
- Is the LM2901 MWA compatible with various logic systems? Yes, it is compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.
- What are some common applications of the LM2901 MWA? Common applications include limit comparators, simple analog to digital converters, pulse and time delay generators, and multivibrators.
- How does the LM2901 MWA handle input common-mode voltage? The input common-mode voltage range includes ground and can go up to V+ - 1.5 VDC.
- What is the response time of the LM2901 MWA? The response time is typically 300 ns for a 100 mV input step with 5 mV overdrive.
- Can the LM2901 MWA be used in battery-operated devices? Yes, due to its low power drain, it is suitable for battery operation.
