Overview
The AD790SQ, produced by Analog Devices Inc., is a fast and precise voltage comparator designed for versatility and ease of use. It features a response time of 45 ns and is fabricated using Analog Devices' Complementary Bipolar (CB) process, which ensures a combination of speed and outstanding input voltage resolution (1 mV max). The AD790SQ can operate from either a single +5 V supply or a dual ±15 V supply, making it adaptable to various application requirements. It also includes a low-glitch output stage and a latching function, which are beneficial for applications requiring synchronous operation and minimizing power supply disturbances.
Key Specifications
| Parameter | Value |
|---|---|
| Response Time | 45 ns |
| Input Voltage Resolution | 1 mV max |
| Supply Voltage | Single: +5 V, Dual: ±15 V, +5 V/-12 V, ±5 V |
| Temperature Range | Military: -55°C to +125°C |
| Package Types | 8-Lead CerDIP, 8-Lead PDIP, 8-Lead SOIC |
| Power Dissipation | Lowest in its speed range |
| Output Stage | Low-glitch, symmetric dynamic drive capability |
| Latch Function | Available for retaining input information at the output |
Key Features
- Fast Response Time: 45 ns response time for quick signal processing.
- Precision Input Voltage Resolution: 1 mV max for accurate signal comparison.
- Flexible Supply Voltage: Can operate from single +5 V or dual ±15 V supplies.
- Low-Glitch Output Stage: Minimizes power supply disturbances and unwanted oscillations.
- Latching Function: Allows the comparator decision to be latched and held at the output.
- Built-in Hysteresis: Reduces the chance of unwanted oscillations.
- Symmetric Output Swing: Provides predictable output under various input and output conditions.
Applications
The AD790SQ is suitable for a wide range of applications, including:
- Analog Signal Processing: Ideal for general-purpose comparator roles in analog signal processing.
- Data Acquisition: Used in data acquisition systems due to its precision and speed.
- Synchronous Operations: The latching function makes it suitable for applications requiring synchronous operation.
- High-Amplitude and Dynamic Signals: Can handle large amplitude and dynamic signals with ease.
Q & A
- What is the response time of the AD790SQ? The response time of the AD790SQ is 45 ns.
- What are the possible supply voltages for the AD790SQ? The AD790SQ can operate from a single +5 V supply or dual supplies such as ±15 V, +5 V/-12 V, or ±5 V.
- What is the temperature range for the AD790SQ? The AD790SQ is rated over the military temperature range of -55°C to +125°C.
- Does the AD790SQ have a latching function? Yes, the AD790SQ has a latching function for retaining input information at the output.
- What is the significance of the low-glitch output stage in the AD790SQ? The low-glitch output stage minimizes power supply disturbances and unwanted oscillations.
- What types of packages are available for the AD790SQ? The AD790SQ is available in 8-Lead CerDIP, 8-Lead PDIP, and 8-Lead SOIC packages.
- How does the AD790SQ handle high-amplitude and dynamic signals? The AD790SQ can handle high-amplitude and dynamic signals with ease due to its ability to handle a maximum differential voltage of 15 V across its input terminals.
- What is the power dissipation characteristic of the AD790SQ? The AD790SQ has the lowest power dissipation among comparators in its speed range.
- How does the built-in hysteresis benefit the AD790SQ? The built-in hysteresis reduces the chance of unwanted oscillations and makes the AD790SQ easier to use than standard open-loop comparators.
- What is the output swing characteristic of the AD790SQ? The output swing of the AD790SQ is symmetric between V_LOGIC and ground, providing a predictable output under various input and output conditions.
