Overview
The LMC7211AIM5 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 operates over a wide supply voltage range of 2.7V to 15V and is designed to provide low power consumption and high performance.
The LMC7211AIM5 features rail-to-rail input and push-pull output, which enhances its versatility in various applications. It has a typical supply current of 7 μA at 5V and a response time of 4 μs, making it suitable for battery-powered devices and other low-power applications.
Key Specifications
| Parameter | Conditions | Typical Value | Minimum Value | Maximum Value |
|---|---|---|---|---|
| Supply Voltage (V+) | 2.7V to 15V | - | 2.7V | 15V |
| Input Offset Voltage (VOS) | V+ = 5V, TJ = 25°C | 3 mV | - | 8 mV |
| Input Common-Mode Voltage Range (CMVR) | V+ = 5V, CMRR > 55 dB | -0.3 to 5.3 V | -0.3 V | 5.3 V |
| Output Voltage High (VOH) | V+ = 5V, Iload = 5 mA | 4.8 V | 4.45 V | - |
| Output Voltage Low (VOL) | V+ = 5V, Iload = 5 mA | 0.2 V | - | 0.55 V |
| Supply Current (IS) | VOUT = Low, V+ = 5V | 7 μA | - | 18 μA |
| 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, Cl = 50 pF, Overdrive = 10 mV | 10 μs | - | - |
Key Features
- Rail-to-Rail Input and Push-Pull Output: The comparator can handle input signals that range from below the negative supply voltage to above the positive supply voltage, and it provides a push-pull output for direct interface with digital logic.
- Low Power Consumption: Typical supply current of 7 μA at 5V, making it suitable for battery-powered devices.
- Wide Supply Voltage Range: Operates from 2.7V to 15V, allowing it to be used in a variety of applications.
- High Input Impedance and Low Input Current: Enables direct sensor interfacing without the need for amplifiers or bias circuits.
- Fast Response Time: Rise and fall times of 0.3 μs at 5V supply voltage.
- Small Package Size: Available in the SOT-23-5 package, which is less than 1.43 mm thick.
Applications
- Battery Powered Products: Ideal for use in portable electronics due to its low power consumption.
- Notebooks and PDAs: Suitable for space and weight critical designs.
- Mobile Communications: Used in mobile devices for signal comparison and detection.
- Alarm and Security Circuits: Can be used as a zero crossing detector or in timing circuits.
- Direct Sensor Interface: Can directly interface with sensors without the need for additional amplifiers or bias circuits.
- Power Supply Monitoring: Useful for monitoring power supply voltages and comparing them to reference voltages.
Q & A
- What is the supply voltage range of the LMC7211AIM5?
The LMC7211AIM5 operates over a supply voltage range of 2.7V to 15V.
- What is the typical supply current at 5V?
The typical supply current at 5V is 7 μA.
- What is the response time of the LMC7211AIM5 at 5V?
The response time is 4 μs at 5V.
- What is the input common-mode voltage range at 5V?
The input common-mode voltage range is from -0.3V to 5.3V at 5V supply voltage.
- Can the LMC7211AIM5 be used as a zero crossing detector?
Yes, the LMC7211AIM5 can be used as a zero crossing detector due to its common mode input range extending below ground.
- What are the package options for the LMC7211AIM5?
The LMC7211AIM5 is available in the SOT-23-5 package.
- Is the LMC7211AIM5 RoHS compliant?
Yes, the LMC7211AIM5 is RoHS compliant.
- What is the propagation delay of the LMC7211AIM5?
The propagation delay (tPHL) is 10 μs at 10 kHz, Cl = 50 pF, and overdrive = 10 mV.
- Can the LMC7211AIM5 directly interface with sensors?
Yes, the LMC7211AIM5 can directly interface with sensors due to its high input impedance and wide input voltage range.
- What are some typical applications of the LMC7211AIM5?
Typical applications include battery-powered products, notebooks, PDAs, mobile communications, alarm and security circuits, and direct sensor interfaces.
