Overview
The LMC7211AIM5/NOPB is a micropower CMOS comparator produced by Texas Instruments. It is available in the 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 mobile communications.
Key Specifications
| Parameter | Conditions | Typical Value | Limit |
|---|---|---|---|
| Supply Voltage (V+ - V-) | 2.7V to 15V | - | 16V |
| Input Offset Voltage (VOS) | V+ = 2.7V, 5V, 15V | 3 mV, 5 mV, 15 mV | 8 mV, 18 mV |
| Input Current (IB) | - | 0.04 pA | - |
| Common Mode Rejection Ratio (CMRR) | 0V ≤ VCM ≤ 2.7V, 5V, 15V | 75 dB, 82 dB | - |
| Power Supply Rejection Ratio (PSRR) | 2.7V ≤ V+ ≤ 15V | 80 dB | - |
| Output Voltage High (VOH) | Iload = 2.5 mA, V+ = 5V, 15V | 2.5V, 14.8V | 2.3V, 14.45V |
| Output Voltage Low (VOL) | Iload = 2.5 mA, V+ = 5V, 15V | 0.2V, 0.2V | 0.4V, 0.55V |
| Supply Current (IS) | VOUT = Low, V+ = 2.7V, 5V, 15V | 7 μA, 14 μA | 14 μA, 18 μA |
| Propagation Delay (tPHL) | f = 10 kHz, Cl = 50 pF, Overdrive = 10 mV | 10 μs | - |
Key Features
- Tiny SOT 23-5 Package: Saves space and is ideal for weight-critical designs.
- Low Supply Current: Typical supply current of 7 μA at 5V.
- Wide Input Common-Mode Range: Beyond V- and V+.
- Push-Pull Output: Suitable for direct interface with digital circuits.
- Low Input Current: 0.04 pA input current.
- High Common Mode Rejection Ratio (CMRR): Up to 82 dB.
- High Power Supply Rejection Ratio (PSRR): Up to 80 dB.
- Fast Response Time: Rise and fall times of 0.3 μs.
- Direct Sensor Interface: Can interface directly with sensors without amplifiers or bias circuits.
Applications
- Battery Powered Products: Ideal for devices requiring low power consumption.
- Notebooks and PDAs: Suitable for portable electronic devices.
- Mobile Communications: Used in mobile devices due to its low power and small size.
- Alarm and Security Circuits: Can be used in security systems due to its fast response time and low power consumption.
- PCMCIA Cards: Suitable for use in PCMCIA cards due to its small size and low power requirements.
Q & A
- What is the typical supply current of the LMC7211AIM5/NOPB at 5V?
The typical supply current is 7 μA at 5V.
- What is the input common-mode voltage range of the LMC7211AIM5/NOPB?
The input common-mode voltage range is beyond V- and V+.
- What is the propagation delay of the LMC7211AIM5/NOPB?
The propagation delay is typically 10 μs at f = 10 kHz, Cl = 50 pF, and overdrive = 10 mV.
- Can the LMC7211AIM5/NOPB be used in battery-powered products?
Yes, it is ideal for battery-powered products due to its low power consumption.
- What is the maximum supply voltage for the LMC7211AIM5/NOPB?
The maximum supply voltage is 16V.
- How does the LMC7211AIM5/NOPB handle input signals that exceed the common mode range?
Large value input resistors or diodes can be used to protect the device from input signals that exceed the common mode range.
- What is the typical output voltage high for the LMC7211AIM5/NOPB at 5V and 15V?
The typical output voltage high is 2.5V at 5V and 14.8V at 15V.
- Can the LMC7211AIM5/NOPB be used for direct sensor interfacing?
Yes, it can interface directly with sensors without the need for amplifiers or bias circuits.
- What is the common mode rejection ratio (CMRR) of the LMC7211AIM5/NOPB?
The CMRR is up to 82 dB.
- What is the power supply rejection ratio (PSRR) of the LMC7211AIM5/NOPB?
The PSRR is up to 80 dB.
