Overview
The TLV3491AIDBVR, produced by Texas Instruments, is a single nanopower push-pull output comparator that belongs to the TLV349x family. This device is distinguished by its fast response time of 6 µs and extremely low power consumption of less than 1.2 µA, making it ideal for power-sensitive and low-voltage applications. The TLV3491 operates on a single supply voltage ranging from 1.8 V to 5.5 V and is available in micro-sized packages such as the 5-pin SOT-23 and 8-pin SOIC, which are suitable for portable and space-restricted designs.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | 1.8 | - | 5.5 | V |
| Quiescent Current (IQ) | 0.85 | 0.8 | 1.2 | µA |
| Propagation Delay Time (tPLH) | 6 | - | - | µs |
| Input Common-Mode Range | (V–) – 0.2 V | - | (V+) + 0.2 V | V |
| Input Offset Voltage (VOS) | ±3 | - | ±15 | mV |
| Output Voltage High (VOH) | 90 | - | 200 | mV |
| Output Voltage Low (VOL) | 160 | - | 200 | mV |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Very Low Supply Current: Typical quiescent current of 0.8 µA, making it suitable for battery-powered and low-power applications.
- Input Common-Mode Range: Extends 200 mV beyond supply rails, ideal for low-voltage applications.
- High Speed: Fast response time of 6 µs.
- Push-Pull CMOS Output Stage: No shoot-through current, optimal for reduced power budget applications.
- Small Packages: Available in 5-pin SOT-23 and 8-pin SOIC packages, suitable for portable and space-restricted designs.
Applications
- Portable Medical Equipment: Ideal for low-power, battery-operated medical devices.
- Wireless Security Systems: Suitable for low-voltage, power-sensitive security systems.
- Remote Control Systems: Used in remote control devices that require low power consumption.
- Handheld Instruments: Perfect for handheld devices that need to operate on low power.
- Ultra-Low Power Systems: Excellent choice for systems requiring minimal power consumption.
Q & A
- What is the typical quiescent current of the TLV3491AIDBVR?
The typical quiescent current is 0.8 µA.
- What is the operating voltage range of the TLV3491AIDBVR?
The operating voltage range is from 1.8 V to 5.5 V.
- What is the propagation delay time of the TLV3491AIDBVR?
The propagation delay time is 6 µs.
- What is the input common-mode range of the TLV3491AIDBVR?
The input common-mode range extends 200 mV beyond the supply rails.
- What types of packages are available for the TLV3491AIDBVR?
It is available in 5-pin SOT-23 and 8-pin SOIC packages.
- What are some typical applications of the TLV3491AIDBVR?
Typical applications include portable medical equipment, wireless security systems, remote control systems, handheld instruments, and ultra-low power systems.
- How does the TLV3491AIDBVR handle input overvoltage protection?
The device inputs are protected by electrostatic discharge (ESD) diodes that conduct if the input voltages exceed the power supplies by more than approximately 500 mV.
- What is the operating temperature range of the TLV3491AIDBVR?
The operating temperature range is from -40°C to 125°C.
- Does the TLV3491AIDBVR have any noise immunity features?
The comparator inputs have no noise immunity within the range of specified offset voltage (±15 mV), but external hysteresis can be added for noisy input signals.
- How can the TLV3491AIDBVR be configured for AC-coupled comparator applications?
The TLV3491 can be configured as an AC-coupled comparator to block DC offsets and trigger only on AC signals, such as zero-cross detection.
