Overview
The TLV3491AIDBVTG4, part of the TLV349x family, is a nanopower, push-pull output comparator produced by Texas Instruments. This device is designed for low-power and low-voltage applications, making it ideal for battery-powered and space-constrained designs. It features a fast response time of 6 µs and an extremely low supply current of 0.8 µA (typical), allowing operation from 1.8 V to 5.5 V. The TLV3491AIDBVTG4 is available in a 5-pin SOT-23 package, making it suitable for portable and ultra-low power systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 1.8 | 5.5 | V | |
| Quiescent Current (IQ) | 0.85 | 0.8 | 1.2 | µA |
| Propagation Delay Time (tPLH) | 6 | 12 | µs | |
| Input Offset Voltage (VOS) | ±3 | ±15 | mV | |
| Input Bias Current (IB) | ±1 | ±10 | pA | |
| Common-Mode Voltage Range | (V–) – 0.2 V | (V+) + 0.2 V | V | |
| Output Voltage High (VOH) | 90 | 200 | mV | |
| Output Voltage Low (VOL) | 160 | 200 | mV | |
| Operating Temperature Range | –40 | 125 | °C | |
| Package Type | 5-Pin SOT-23 |
Key Features
- Very low supply current: 0.8 µA (typical)
- High speed: 6 µs propagation delay time
- Push-pull CMOS output stage with no shoot-through current
- Input common-mode range beyond supply rails
- Small packages: 5-pin SOT-23 for space-constrained applications
- Operating voltage range: 1.8 V to 5.5 V
- Input overvoltage protection with ESD diodes
- Rail-to-rail input and output on supply voltages as low as 1.8 V
Applications
- Portable medical equipment
- Wireless security systems
- Remote control systems
- Handheld instruments
- Ultra-low power systems
- Battery-powered applications with single-cell operation
Q & A
- What is the typical supply current of the TLV3491AIDBVTG4?
The typical supply current is 0.8 µA.
- What is the propagation delay time of the TLV3491AIDBVTG4?
The propagation delay time is 6 µs.
- What is the operating voltage range of the TLV3491AIDBVTG4?
The operating voltage range is from 1.8 V to 5.5 V.
- What type of output stage does the TLV3491AIDBVTG4 have?
The TLV3491AIDBVTG4 has a push-pull CMOS output stage.
- What is the input common-mode voltage range of the TLV3491AIDBVTG4?
The input common-mode voltage range is beyond the supply rails, specifically (V–) – 0.2 V to (V+) + 0.2 V.
- What kind of protection does the TLV3491AIDBVTG4 have against input overvoltage?
The device inputs are protected by electrostatic discharge (ESD) diodes.
- In what package type is the TLV3491AIDBVTG4 available?
The TLV3491AIDBVTG4 is available in a 5-pin SOT-23 package.
- What are some typical applications of the TLV3491AIDBVTG4?
Typical applications include portable medical equipment, wireless security systems, remote control systems, handheld instruments, and ultra-low power systems.
- How does the TLV3491AIDBVTG4 handle noisy input signals?
For noisy input signals, external hysteresis can be added to improve noise immunity within the specified offset voltage range.
- What is the operating temperature range of the TLV3491AIDBVTG4?
The operating temperature range is from –40°C to 125°C.
