Overview
The LMC7211AIMX/NOPB is a tiny CMOS comparator designed and manufactured by Texas Instruments. This component is notable for its compact SOT23-5 and SOIC-8 packages, making it ideal for space and weight-critical designs. The LMC7211 features rail-to-rail input and push-pull output, ensuring versatility and high performance in various applications. It operates over a wide supply voltage range of 2.7V to 15V, making it suitable for both low-voltage and standard voltage systems. The comparator is known for its low power consumption, with a typical supply current of 7 μA at 5V, and a fast response time of 4 μs at 5V.
Key Specifications
| Parameter | Conditions | Typical Value | Maximum Value |
|---|---|---|---|
| Supply Voltage Range | V+ | 2.7V to 15V | - |
| Input Offset Voltage | V+ = 5V | 3 mV | 5 mV |
| Input Common-Mode Voltage Range | V+ | -0.3 to V+ - 0.2 | - |
| Output Voltage High | Iload = 2.5 mA, V+ = 5V | 2.5 V | 2.3 V |
| Output Voltage Low | Iload = 2.5 mA, V+ = 5V | 0.2 V | 0.4 V |
| Supply Current | VOUT = Low, V+ = 5V | 7 μA | 14 μA |
| Propagation Delay | f = 10 kHz, Cl = 50 pF, Overdrive = 10 mV | 10 μs | - |
| Operating Temperature Range | - | -40°C to +85°C | - |
| Package Type | - | SOT23-5, SOIC-8 | - |
Key Features
- Rail-to-Rail Input and Push-Pull Output: The LMC7211 can handle input signals that range from the negative supply voltage to the positive supply voltage, and it provides a push-pull output for driving loads directly.
- Low Power Consumption: With a typical supply current of 7 μA at 5V, this comparator is suitable for battery-powered and low-power applications.
- Fast Response Time: The comparator has a response time of 4 μs at 5V, making it suitable for applications requiring quick signal processing.
- Direct Sensor Interface: The wide input voltage range and high impedance allow for direct interfacing with sensors without the need for additional amplifiers or bias circuits.
- Low Input Current: The input bias current is very low, typically 0.04 pA at 5V, which minimizes the impact on sensor signals.
- High CMRR and PSRR: Common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) are typically 75 dB and 80 dB, respectively, ensuring good noise immunity.
Applications
- Battery Powered Products: Ideal for devices such as notebooks, PDAs, and mobile communications due to its low power consumption.
- Alarm and Security Circuits: The fast response time and low power make it suitable for alarm systems and security applications.
- Direct Sensor Interface: Used in applications requiring direct connection to sensors without additional amplification.
- PCMCIA Cards and Mobile Devices: Its compact size and low power consumption make it a good fit for these applications.
Q & A
- What is the supply voltage range of the LMC7211AIMX/NOPB?
The supply voltage range is from 2.7V to 15V. - What is the typical supply current at 5V?
The typical supply current is 7 μA at 5V. - What is the response time of the LMC7211AIMX/NOPB at 5V?
The response time is 4 μs at 5V. - Can the LMC7211AIMX/NOPB be used for direct sensor interfacing?
Yes, it can be used for direct sensor interfacing due to its wide input voltage range and high impedance. - What is the input offset voltage at 5V?
The input offset voltage is typically 3 mV at 5V. - What are the common applications of the LMC7211AIMX/NOPB?
It is commonly used in battery-powered products, alarm and security circuits, direct sensor interfaces, and PCMCIA cards. - What is the operating temperature range of the LMC7211AIMX/NOPB?
The operating temperature range is -40°C to +85°C. - What are the package types available for the LMC7211AIMX/NOPB?
The available package types are SOT23-5 and SOIC-8. - Is the LMC7211AIMX/NOPB RoHS compliant?
Yes, the LMC7211AIMX/NOPB is RoHS compliant. - What is the propagation delay of the LMC7211AIMX/NOPB?
The propagation delay is typically 10 μs.
