Overview
The AD790JRZ-REEL7, produced by Analog Devices Inc., is a fast and precise voltage comparator. This device is known for its exceptional versatility and ease of use, making it suitable for a wide range of analog signal processing and data acquisition applications. The AD790 operates from either a single +5 V supply or a dual ±15 V supply, allowing its inputs to be referenced to ground in single-supply mode or handling large differential voltages in dual-supply mode. Fabricated using Analog Devices' Complementary Bipolar (CB) process, the AD790 combines fast response times (45 ns) with outstanding input voltage resolution (1 mV max).
Key Specifications
| Specification | Value |
|---|---|
| Package | 8-Lead SOIC |
| Temperature Range | 0°C to 70°C (Commercial), -40°C to +85°C (Industrial), -55°C to +125°C (Military) |
| Supply Voltage | Single: 4.5 V to 7 V, Dual: ±5 V, ±12 V, ±15 V |
| Propagation Delay | 45 ns |
| Input Voltage Resolution | 1 mV max |
| Output Stage | Low-glitch, controlled switching |
| Latch Function | Available for synchronous operation |
Key Features
- Fast Response Time: The AD790 has a propagation delay of 45 ns, making it suitable for high-speed applications.
- Precision Input Voltage Resolution: The device offers an input voltage resolution of 1 mV max, ensuring high accuracy in signal comparison.
- Low-Glitch Output Stage: The AD790 incorporates a low-glitch output stage that minimizes power supply disturbances and unwanted oscillations.
- Wide Supply Voltage Range: The comparator can operate from a single +5 V supply or various dual supply configurations, including ±5 V, ±12 V, and ±15 V.
- Latch Function: The AD790 includes a latch function for retaining input information at the output, making it suitable for synchronous operation.
- Built-in Hysteresis: The device features built-in hysteresis, which helps in minimizing unwanted oscillations and ensures stable operation.
Applications
- Analog Signal Processing: The AD790 is suitable for general-purpose comparator applications in analog signal processing due to its speed, precision, and versatility.
- Data Acquisition: It is used in data acquisition systems where fast and accurate signal comparison is required.
- Precision Full-Wave Rectifier: The high speed and precision of the AD790 make it suitable for use in full-wave rectifier circuits, capable of rectifying signals from a few mV to 10 V.
- Bipolar to CMOS/TTL Conversion: The AD790 can be used to translate bipolar signals to CMOS or TTL logic levels, operating up to switching frequencies of 20 MHz.
Q & A
- What is the propagation delay of the AD790?
The propagation delay of the AD790 is 45 ns.
- What are the possible supply voltage configurations for the AD790?
The AD790 can operate from a single +5 V supply or various dual supply configurations, including ±5 V, ±12 V, and ±15 V.
- Does the AD790 have a latch function?
- What is the input voltage resolution of the AD790?
- Why is the low-glitch output stage important in the AD790?
- What types of signals can the AD790 handle?
- Is the AD790 suitable for high-speed applications?
- What is the temperature range for the different grades of the AD790?
- How does the AD790's hysteresis help in its operation?
- Can the AD790 be used in full-wave rectifier circuits?
