Overview
The LMC7211BIM5X/NOPB is a micropower CMOS comparator produced by Texas Instruments. It is available in a space-saving SOT-23-5 package, making it ideal for designs where space and weight are critical. This comparator is designed to operate at low supply voltages, starting from 2.7V, and is suitable for a wide range of applications including battery-powered products, notebooks, PDAs, and PCMCIA cards.
Key Specifications
| Parameter | Conditions | Typical Value | Limit |
|---|---|---|---|
| Supply Voltage (V+ - V-) | 2.7V to 15V | - | 16V |
| Input Offset Voltage (VOS) | V+ = 2.7V, V- = 0V | 3 mV | 8 mV (max) |
| Input Current (IB) | - | 0.04 pA | - |
| Common Mode Rejection Ratio (CMRR) | 0V ≤ VCM ≤ 2.7V | 75 dB | - |
| Power Supply Rejection Ratio (PSRR) | 2.7V ≤ V+ ≤ 15V | 80 dB | - |
| Output Voltage High (VOH) | V+ = 5V, Iload = 2.5 mA | 2.5 V | 2.3 V (min) |
| Output Voltage Low (VOL) | V+ = 5V, Iload = 2.5 mA | 0.2 V | 0.4 V (max) |
| Supply Current (IS) | VOUT = Low, V+ = 5V | 7 μA | 14 μA (max) |
| Rise Time (trise) | f = 10 kHz, Cl = 50 pF, Overdrive = 10 mV | 0.3 μs | - |
| Fall Time (tfall) | f = 10 kHz, Cl = 50 pF, Overdrive = 10 mV | 0.3 μs | - |
| Propagation Delay (tPHL) | f = 10 kHz, 10 mV | 10 μs | - |
Key Features
- Tiny SOT 23-5 Package: Saves space and is ideal for weight-critical designs.
- Rail-to-Rail Input: Input common-mode range extends beyond V- and V+.
- Low Power Consumption: Typical supply current of 7 μA at 5V.
- Fast Response Time: Rise and fall times of 0.3 μs at 5V.
- Push-Pull Output: Suitable for direct interface with digital circuits.
- Direct Sensor Interface: Can interface directly with sensors without the need for amplifiers or bias circuits.
- Low Voltage Operation: Operates at supply voltages as low as 2.7V.
- High Impedance: Low input current of 0.04 pA.
Applications
- Battery Powered Products: Ideal for devices requiring low power consumption.
- Notebooks and PDAs: Suitable for portable electronic devices.
- PCMCIA Cards: Used in compact peripheral cards.
- Mobile Communications: Applied in mobile devices and communication systems.
- Alarm and Security Circuits: Used in security and alarm systems due to its fast response time and low power consumption.
- Direct Sensor Interface: Used in applications requiring direct sensor interfacing without additional amplifiers.
Q & A
- What is the typical supply current of the LMC7211 at 5V?
The typical supply current is 7 μA at 5V.
- What is the input common-mode voltage range of the LMC7211?
The input common-mode voltage range extends beyond V- and V+.
- What is the response time of the LMC7211 at 5V?
The rise and fall times are 0.3 μs at 5V.
- Can the LMC7211 operate at low supply voltages?
Yes, it can operate at supply voltages as low as 2.7V.
- What is the typical input offset voltage of the LMC7211?
The typical input offset voltage is 3 mV.
- What is the common mode rejection ratio (CMRR) of the LMC7211?
The CMRR is 75 dB.
- What is the power supply rejection ratio (PSRR) of the LMC7211?
The PSRR is 80 dB.
- Can the LMC7211 be used for direct sensor interfacing?
Yes, it can interface directly with sensors without the need for amplifiers or bias circuits.
- What are some common applications of the LMC7211?
It is used in battery-powered products, notebooks, PDAs, PCMCIA cards, mobile communications, and alarm and security circuits.
- What is the package type of the LMC7211BIM5X/NOPB?
The package type is SOT-23-5.
