Overview
The TLV3502-Q1 is a high-speed, dual rail-to-rail comparator designed by Texas Instruments. This device is particularly suited for automotive applications, including HEV/EV, powertrain, and passive safety systems, due to its AEC-Q100 qualification. It features a fast 4.5-ns propagation delay and operates over a supply voltage range of 2.7 V to 5.5 V, making it ideal for low-voltage applications. The rail-to-rail output can directly drive either CMOS or TTL logic, and the device includes a shutdown function for power management. The TLV3502-Q1 is available in a microsize SOT23-8 package, which is beneficial for portable and space-restricted applications.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | 2.7 | 5.5 | V | ||
| Propagation Delay Time | ΔVIN = 100 mV, Overdrive = 20 mV | 4.5 | 6.4 | 7 | ns |
| Input Offset Voltage | VCM = 0 V, IO = 0 mA | ±1 | ±6.5 | mV | |
| Input Bias Current | VCM = VCC/2, ΔVIN = ±5.5 V | ±2 | ±10 | pA | |
| Common-Mode Voltage Range | V− - 0.3 to V+ + 0.3 | V | |||
| Operating Temperature | -40 | 125 | °C | ||
| Shutdown Turn-Off Time | 30 | ns | |||
| Shutdown Turn-On Time | 100 | ns |
Key Features
- High Speed: 4.5-ns propagation delay, making it suitable for high-speed applications.
- Rail-to-Rail I/O: Operates from 2.7 V to 5.5 V and has beyond-the-rails input common-mode range.
- Push-Pull CMOS Output Stage: Directly drives either CMOS or TTL logic.
- Shutdown Function: Allows for power management by turning off the device.
- Micro Package: Available in SOT23-8 (DCN) package, ideal for portable and space-restricted applications.
- Low Supply Current: 3.2 mA, contributing to energy efficiency.
- ESD Protection: Input terminals are protected by ESD diodes.
- Internal Hysteresis: 6 mV of internal hysteresis for improved noise immunity.
Applications
- Automotive Systems: Qualified for HEV/EV, powertrain, and passive safety applications.
- Threshold Detector: Can be used as a threshold detector in various control systems.
- Zero-Crossing Detector: Suitable for detecting zero-crossing points in AC signals.
- Window Comparator: Can be configured as a high-speed window comparator to determine when a signal is between two voltages.
- Oscillator: Can be easily configured as a simple relaxation oscillator.
Q & A
- What is the propagation delay of the TLV3502-Q1 comparator?
The propagation delay of the TLV3502-Q1 is 4.5 ns with an overdrive of 20 mV.
- What is the operating voltage range of the TLV3502-Q1?
The device operates from 2.7 V to 5.5 V.
- What type of output stage does the TLV3502-Q1 have?
The TLV3502-Q1 has a push-pull CMOS output stage.
- Is the TLV3502-Q1 qualified for automotive applications?
Yes, it is AEC-Q100 qualified and suitable for HEV/EV, powertrain, and passive safety applications.
- What is the typical supply current of the TLV3502-Q1?
The typical supply current is 3.2 mA).
- How does the TLV3502-Q1 protect against input over-voltage?
The device inputs are protected by ESD diodes that conduct if the input voltages exceed the power supplies by more than approximately 300 mV).
- Can the TLV3502-Q1 be used as an oscillator?
Yes, it can be easily configured as a simple relaxation oscillator).
- What is the package type of the TLV3502-Q1?
The device is available in the SOT23-8 (DCN) package).
- How can external hysteresis be added to the TLV3502-Q1?
External hysteresis can be added by connecting a small amount of feedback to the positive input, as shown in the application notes).
- What is the maximum toggle frequency of the TLV3502-Q1?
The maximum toggle frequency is 80 MHz with an overdrive of 50 mV and VS = 5 V).
