Overview
The AD790AQ, produced by Analog Devices Inc., is a fast and precise voltage comparator designed for versatility and ease of use. This device is fabricated using Analog Devices' Complementary Bipolar (CB) process, which provides a combination of fast response time and outstanding input voltage resolution. The AD790AQ can operate from either a single +5 V supply or a dual ±15 V supply, making it adaptable to various application requirements. It features a 'low glitch' output stage that minimizes power supply disturbances and unwanted oscillations, enhancing its reliability and performance in analog signal processing and data acquisition.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Response Time | 45 ns | |
| Input Voltage Resolution | 1 mV (max) | |
| Supply Voltage Range | Single: 4.5 V to 7 V, Dual: ±5 V, ±12 V, ±15 V | V |
| Temperature Range | Commercial: 0°C to 70°C, Industrial: -40°C to +85°C, Military: -55°C to +125°C | °C |
| Output Type | CMOS and TTL compatible | |
| Package Type | 8-Lead CerDIP, 8-Lead PDIP, 8-Lead SOIC |
Key Features
- Fast Response Time: The AD790AQ has a response time of 45 ns, making it suitable for high-speed applications.
- Precision Input Voltage Resolution: It offers a maximum input voltage resolution of 1 mV, ensuring high accuracy in signal comparison.
- Flexible Supply Voltage: The device can operate from a single +5 V supply or various dual supply configurations, including ±15 V.
- Low Glitch Output Stage: The 'low glitch' output stage minimizes large current spikes and power supply disturbances, reducing the risk of unwanted oscillations.
- Latching Function: The AD790AQ includes a latching function, allowing it to retain input information at the output, which is useful for synchronous operation.
- Built-in Hysteresis: The device features built-in hysteresis, which helps in responding to both slow, low-level signals and fast, large amplitude signals.
Applications
The AD790AQ is suitable for a wide range of applications, including:
- Analog Signal Processing: Its precision and speed make it ideal for comparing analog signals in various processing applications.
- Data Acquisition: The device is used in data acquisition systems where accurate and fast signal comparison is necessary.
- Industrial Automation: It can be used in industrial automation systems that require reliable and precise signal comparison.
- Military and Aerospace: The military-grade version (AD790S) is suitable for applications requiring operation over a wide temperature range.
Q & A
- What is the response time of the AD790AQ?
The response time of the AD790AQ is 45 ns.
- What are the possible supply voltage configurations for the AD790AQ?
The AD790AQ can operate from a single +5 V supply or various dual supply configurations, including ±5 V, ±12 V, and ±15 V.
- What is the input voltage resolution of the AD790AQ?
The input voltage resolution of the AD790AQ is 1 mV (max).
- Does the AD790AQ have a latching function?
- What types of output are supported by the AD790AQ?
The AD790AQ supports both CMOS and TTL compatible outputs.
- What are the temperature ranges for the different grades of the AD790?
The AD790 is available in commercial (0°C to 70°C), industrial (-40°C to +85°C), and military (-55°C to +125°C) temperature ranges.
- How does the 'low glitch' output stage benefit the AD790AQ?
The 'low glitch' output stage minimizes large current spikes and power supply disturbances, reducing the risk of unwanted oscillations.
- What is the significance of built-in hysteresis in the AD790AQ?
The built-in hysteresis enables the AD790AQ to respond to both slow, low-level signals and fast, large amplitude signals.
- What are some common applications of the AD790AQ?
The AD790AQ is commonly used in analog signal processing, data acquisition, industrial automation, and military/aerospace applications.
- What types of packages are available for the AD790AQ?
The AD790AQ is available in 8-Lead CerDIP, 8-Lead PDIP, and 8-Lead SOIC packages.
